* [PATCH RESEND v2] cfg80211: add bitrate for 20MHz MCS 9
From: Thomas Pedersen @ 2016-10-31 18:28 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless, Thomas Pedersen
Some drivers (ath10k) report MCS 9 @ 20MHz, which
technically isn't defined. To get more meaningful value
than 0 out of this however, just extrapolate a bitrate
from ratio of MCS 7 and 9 in channels where it is allowed.
Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
---
v2: add MCS 9 bitrate instead of capping at MCS 8
---
net/wireless/util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 32060f8..30fc320 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1163,7 +1163,7 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
58500000,
65000000,
78000000,
- 0,
+ 86500000,
},
{ 13500000,
27000000,
--
2.10.0.297.gf6727b0
^ permalink raw reply related
* Re: [PATCH v6] mwifiex: parse device tree node for PCIe
From: Rajat Jain @ 2016-10-31 17:09 UTC (permalink / raw)
To: Rob Herring
Cc: Rajat Jain, linux-wireless, devicetree, Xinming Hu,
Amitkumar Karwar, Brian Norris, Kalle Valo
In-Reply-To: <20161030204131.pwfjqekpwd6nr3gb@rob-hp-laptop>
On Sun, Oct 30, 2016 at 1:41 PM, Rob Herring <robh@kernel.org> wrote:
> On Fri, Oct 21, 2016 at 02:21:09PM -0700, Rajat Jain wrote:
>> From: Xinming Hu <huxm@marvell.com>
>>
>> This patch derives device tree node from pcie bus layer framework, and
>> fixes a minor memory leak in mwifiex_pcie_probe() (in failure path).
>> Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
>> marvell-8xxx.txt) to accommodate PCIe changes.
>>
>> Signed-off-by: Xinming Hu <huxm@marvell.com>
>> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
>> Signed-off-by: Rajat Jain <rajatja@google.com>
>> Reviewed-by: Brian Norris <briannorris@chromium.org>
>> ---
>> v2: Included vendor and product IDs in compatible strings for PCIe
>> chipsets(Rob Herring)
>> v3: Patch is created using -M option so that it will only include diff of
>> original and renamed files(Rob Herring)
>> Resend v3: Resending the patch because I missed to include device tree mailing
>> while sending v3.
>> v4: Fix error handling, also move-on even if no device tree node is present.
>> v5: Update commit log to include memory leak, return -EINVAL instead of -1.
>> v6: Remove an unnecessary error print, fix typo in commit log
>>
>> .../{marvell-sd8xxx.txt => marvell-8xxx.txt} | 8 +++--
>> drivers/net/wireless/marvell/mwifiex/pcie.c | 36 +++++++++++++++++++---
>> drivers/net/wireless/marvell/mwifiex/sta_cmd.c | 3 +-
>> 3 files changed, 39 insertions(+), 8 deletions(-)
>> rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)
>>
>> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
>> similarity index 91%
>> rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
>> rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
>> index c421aba..dfe5f8e 100644
>> --- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
>> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
>> @@ -1,8 +1,8 @@
>> -Marvell 8897/8997 (sd8897/sd8997) SDIO devices
>> +Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
>> ------
>>
>> -This node provides properties for controlling the marvell sdio wireless device.
>> -The node is expected to be specified as a child node to the SDIO controller that
>> +This node provides properties for controlling the marvell sdio/pcie wireless device.
>
> s/marvell/Marvell/
> s/sdio\/pcie/SDIO\/PCIE/
>
>> +The node is expected to be specified as a child node to the SDIO/PCIE controller that
>> connects the device to the system.
>>
>> Required properties:
>> @@ -10,6 +10,8 @@ Required properties:
>> - compatible : should be one of the following:
>> * "marvell,sd8897"
>> * "marvell,sd8997"
>> + * "pci11ab,2b42"
>> + * "pci1b4b,2b42"
>
Hi Rob,
> I think I already said this, but you have the vendor and product IDs
> reversed.
Actually Marvell has 2 vendor IDs assigned to it. In include/linux/pci_ids.h:
#define PCI_VENDOR_ID_MARVELL 0x11ab
#define PCI_VENDOR_ID_MARVELL_EXT 0x1b4b
So in this case the compatible property describes a single product ID,
with both possible vendor IDs.
Thanks,
Rajat
>
> Rob
^ permalink raw reply
* [char-misc v4.9] mei: bus: fix received data size check in NFC fixup
From: Tomas Winkler @ 2016-10-31 17:02 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Alexander Usyskin, linux-kernel, Lauro Ramos Venancio,
Aloisio Almeida Jr, Samuel Ortiz, linux-wireless, Tomas Winkler
From: Alexander Usyskin <alexander.usyskin@intel.com>
NFC version reply size checked against only header size, not against
full message size. That may lead potentially to uninitialized memory access
in version data.
That leads to warnings when version data is accessed:
drivers/misc/mei/bus-fixup.c: warning: '*((void *)&ver+11)' may be used uninitialized in this function [-Wuninitialized]: => 212:2
Reported in
Build regressions/improvements in v4.9-rc3
https://lkml.org/lkml/2016/10/30/57
Fixes: 59fcd7c63abf (mei: nfc: Initial nfc implementation)
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/bus-fixup.c | 2 +-
drivers/nfc/mei_phy.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index e9e6ea3ab73c..75b9d4ac8b1e 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -178,7 +178,7 @@ static int mei_nfc_if_version(struct mei_cl *cl,
ret = 0;
bytes_recv = __mei_cl_recv(cl, (u8 *)reply, if_version_length);
- if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) {
+ if (bytes_recv < if_version_length) {
dev_err(bus->dev, "Could not read IF version\n");
ret = -EIO;
goto err;
diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c
index 07b4239585fa..03139c5a05e4 100644
--- a/drivers/nfc/mei_phy.c
+++ b/drivers/nfc/mei_phy.c
@@ -133,7 +133,7 @@ static int mei_nfc_if_version(struct nfc_mei_phy *phy)
return -ENOMEM;
bytes_recv = mei_cldev_recv(phy->cldev, (u8 *)reply, if_version_length);
- if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) {
+ if (bytes_recv < 0 || bytes_recv < if_version_length) {
pr_err("Could not read IF version\n");
r = -EIO;
goto err;
--
2.7.4
^ permalink raw reply related
* [PATCH] ath9k_htc: fix minor mistakes in dev_err messages
From: Colin King @ 2016-10-31 15:12 UTC (permalink / raw)
To: QCA ath9k Development, Kalle Valo, linux-wireless, ath9k-devel,
netdev
Cc: linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Add missing space in a dev_err message and join wrapped text so
it does not span multiple lines. Fix spelling mistake on "unknown".
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/net/wireless/ath/ath9k/htc_hst.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.c b/drivers/net/wireless/ath/ath9k/htc_hst.c
index fd85f99..8e6dae2 100644
--- a/drivers/net/wireless/ath/ath9k/htc_hst.c
+++ b/drivers/net/wireless/ath/ath9k/htc_hst.c
@@ -244,8 +244,8 @@ int htc_connect_service(struct htc_target *target,
/* Find an available endpoint */
endpoint = get_next_avail_ep(target->endpoint);
if (!endpoint) {
- dev_err(target->dev, "Endpoint is not available for"
- "service %d\n", service_connreq->service_id);
+ dev_err(target->dev, "Endpoint is not available for service %d\n",
+ service_connreq->service_id);
return -EINVAL;
}
@@ -382,7 +382,7 @@ static void ath9k_htc_fw_panic_report(struct htc_target *htc_handle,
break;
}
default:
- dev_err(htc_handle->dev, "ath: uknown panic pattern!\n");
+ dev_err(htc_handle->dev, "ath: unknown panic pattern!\n");
break;
}
}
--
2.9.3
^ permalink raw reply related
* [PATCH v7 2/2] mac80211: multicast to unicast conversion
From: Michael Braun @ 2016-10-31 13:41 UTC (permalink / raw)
To: johannes; +Cc: Michael Braun, linux-wireless, netdev, projekt-wlan
In-Reply-To: <1477921260-24556-1-git-send-email-michael-dev@fami-braun.de>
Add the ability for an AP (and associated VLANs) to perform
multicast-to-unicast conversion for ARP, IPv4 and IPv6 frames
(possibly within 802.1Q). If enabled, such frames are to be sent
to each station separately, with the DA replaced by their own
MAC address rather than the group address.
Note that this may break certain expectations of the receiver,
such as the ability to drop unicast IP packets received within
multicast L2 frames, or the ability to not send ICMP destination
unreachable messages for packets received in L2 multicast (which
is required, but the receiver can't tell the difference if this
new option is enabled.)
This also doesn't implement the 802.11 DMS (directed multicast
service).
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
--
v7:
- avoid recursion
- style and description
v5:
- rename bss->unicast to bss->multicast_to_unicast
- access sdata->bss only after checking iftype
v4:
- rename MULTICAST_TO_UNICAST to MULTICAST_TO_UNICAST
v3: fix compile error for trace.h
v2: add nl80211 toggle
rename tx_dnat to change_da
change int to bool unicast
---
net/mac80211/cfg.c | 16 ++++++
net/mac80211/debugfs_netdev.c | 3 ++
net/mac80211/ieee80211_i.h | 1 +
net/mac80211/tx.c | 122 +++++++++++++++++++++++++++++++++++++++++-
4 files changed, 141 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1edb017..a861d85 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3345,6 +3345,21 @@ static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
return -ENOENT;
}
+static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
+ struct net_device *dev,
+ const bool enabled)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* not supported with P2P_GO for now */
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ return -EOPNOTSUPP;
+
+ sdata->u.ap.multicast_to_unicast = enabled;
+
+ return 0;
+}
+
const struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -3430,4 +3445,5 @@ const struct cfg80211_ops mac80211_config_ops = {
.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
.add_tx_ts = ieee80211_add_tx_ts,
.del_tx_ts = ieee80211_del_tx_ts,
+ .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
};
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index ed7bff4..509c6c3 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -487,6 +487,8 @@ static ssize_t ieee80211_if_fmt_num_buffered_multicast(
}
IEEE80211_IF_FILE_R(num_buffered_multicast);
+IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX);
+
/* IBSS attributes */
static ssize_t ieee80211_if_fmt_tsf(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
@@ -642,6 +644,7 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(dtim_count);
DEBUGFS_ADD(num_buffered_multicast);
DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
+ DEBUGFS_ADD_MODE(multicast_to_unicast, 0600);
}
static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 70c0963..84374ed 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -293,6 +293,7 @@ struct ieee80211_if_ap {
driver_smps_mode; /* smps mode request */
struct work_struct request_smps_work;
+ bool multicast_to_unicast;
};
struct ieee80211_if_wds {
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index c3ce86e..7271c93 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
+#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/bitmap.h>
#include <linux/rcupdate.h>
@@ -3418,6 +3419,115 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb,
rcu_read_unlock();
}
+static int ieee80211_change_da(struct sk_buff *skb, struct sta_info *sta)
+{
+ struct ethhdr *eth;
+ int err;
+
+ err = skb_ensure_writable(skb, ETH_HLEN);
+ if (unlikely(err))
+ return err;
+
+ eth = (void *)skb->data;
+ ether_addr_copy(eth->h_dest, sta->sta.addr);
+
+ return 0;
+}
+
+static inline int
+ieee80211_multicast_to_unicast(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ const struct ethhdr *eth = (void *)skb->data;
+ const struct vlan_ethhdr *ethvlan = (void *)skb->data;
+ u16 ethertype;
+
+ if (likely(!is_multicast_ether_addr(eth->h_dest)))
+ return 0;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP_VLAN:
+ if (sdata->u.vlan.sta)
+ return 0;
+ if (sdata->wdev.use_4addr)
+ return 0;
+ /* fall through */
+ case NL80211_IFTYPE_AP:
+ /* check runtime toggle for this bss */
+ if (!sdata->bss->multicast_to_unicast)
+ return 0;
+ break;
+ default:
+ return 0;
+ }
+
+ /* multicast to unicast conversion only for some payload */
+ ethertype = ntohs(eth->h_proto);
+ if (ethertype == ETH_P_8021Q && skb->len >= VLAN_ETH_HLEN)
+ ethertype = ntohs(ethvlan->h_vlan_encapsulated_proto);
+ switch (ethertype) {
+ case ETH_P_ARP:
+ case ETH_P_IP:
+ case ETH_P_IPV6:
+ break;
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void
+ieee80211_convert_to_unicast(struct sk_buff *skb, struct net_device *dev,
+ struct sk_buff_head *queue)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ const struct ethhdr *eth = (struct ethhdr *)skb->data;
+ struct sta_info *sta, *first = NULL;
+ struct sk_buff *cloned_skb;
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sdata != sta->sdata)
+ /* AP-VLAN mismatch */
+ continue;
+ if (unlikely(ether_addr_equal(eth->h_source, sta->sta.addr)))
+ /* do not send back to source */
+ continue;
+ if (!first) {
+ first = sta;
+ continue;
+ }
+ cloned_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!cloned_skb)
+ goto unicast;
+ if (unlikely(ieee80211_change_da(cloned_skb, sta))) {
+ dev_kfree_skb(cloned_skb);
+ goto unicast;
+ }
+ __skb_queue_tail(queue, cloned_skb);
+ }
+
+ if (likely(first)) {
+ if (unlikely(ieee80211_change_da(skb, first)))
+ goto unicast;
+ __skb_queue_tail(queue, skb);
+ } else {
+ /* no STA connected, drop */
+ kfree_skb(skb);
+ skb = NULL;
+ }
+
+ goto out;
+unicast:
+ __skb_queue_purge(queue);
+ __skb_queue_tail(queue, skb);
+out:
+ rcu_read_unlock();
+}
+
/**
* ieee80211_subif_start_xmit - netif start_xmit function for 802.3 vifs
* @skb: packet to be sent
@@ -3428,7 +3538,17 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb,
netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
- __ieee80211_subif_start_xmit(skb, dev, 0);
+ if (unlikely(ieee80211_multicast_to_unicast(skb, dev))) {
+ struct sk_buff_head queue;
+
+ __skb_queue_head_init(&queue);
+ ieee80211_convert_to_unicast(skb, dev, &queue);
+ while ((skb = __skb_dequeue(&queue)))
+ __ieee80211_subif_start_xmit(skb, dev, 0);
+ } else {
+ __ieee80211_subif_start_xmit(skb, dev, 0);
+ }
+
return NETDEV_TX_OK;
}
--
2.1.4
^ permalink raw reply related
* [PATCH v7 1/2] nl80211: multicast_to_unicast can be changed while IFF_UP
From: Michael Braun @ 2016-10-31 13:40 UTC (permalink / raw)
To: johannes; +Cc: Michael Braun, linux-wireless, netdev, projekt-wlan
There is no need to prevent toggling multicast_to_unicast while
interface is already up. This change simplifies reconfiguration
from hostapd.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
---
net/wireless/nl80211.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5349c63..7554400 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -11006,9 +11006,6 @@ static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
const struct nlattr *nla;
bool enabled;
- if (netif_running(dev))
- return -EBUSY;
-
if (!rdev->ops->set_multicast_to_unicast)
return -EOPNOTSUPP;
--
2.1.4
^ permalink raw reply related
* RE: [PATCH v4 1/3] mwifiex: reset card->adapter during device unregister
From: Amitkumar Karwar @ 2016-10-31 10:33 UTC (permalink / raw)
To: Brian Norris
Cc: linux-wireless@vger.kernel.org, Cathy Luo, Nishant Sarmukadam,
rajatja@google.com, Xinming Hu, abhishekbh@google.com,
Dmitry Torokhov
In-Reply-To: <20161025165429.GA64548@google.com>
Hi Kalle,
> From: Brian Norris [mailto:briannorris@chromium.org]
> Sent: Tuesday, October 25, 2016 10:25 PM
> To: Amitkumar Karwar
> Cc: linux-wireless@vger.kernel.org; Cathy Luo; Nishant Sarmukadam;
> rajatja@google.com; Xinming Hu; abhishekbh@google.com; Dmitry Torokhov
> Subject: Re: [PATCH v4 1/3] mwifiex: reset card->adapter during device
> unregister
>
Please ignore this patch series (and also v5)
As Brian pointed out, it doesn't address race issues correctly.
Xinming Hu has submitted a patch series(having 12 patches) from Brian which resolves the issues and performs some cleanup work.
Regards,
Amitkumar Karwar.
^ permalink raw reply
* [PATCH 12/12] mwifiex: pcie: stop checking for NULL adapter->card
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
It should never be NULL here, and to think otherwise makes things
confusing.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 55 +++++++++++++----------------
1 file changed, 24 insertions(+), 31 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index c061d00..86e8ce6 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2990,31 +2990,28 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
{
struct pcie_service_card *card = adapter->card;
- struct pci_dev *pdev;
+ struct pci_dev *pdev = card->dev;
int i;
- if (card) {
- pdev = card->dev;
- if (card->msix_enable) {
- for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++)
- synchronize_irq(card->msix_entries[i].vector);
+ if (card->msix_enable) {
+ for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++)
+ synchronize_irq(card->msix_entries[i].vector);
- for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++)
- free_irq(card->msix_entries[i].vector,
- &card->msix_ctx[i]);
+ for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++)
+ free_irq(card->msix_entries[i].vector,
+ &card->msix_ctx[i]);
- card->msix_enable = 0;
- pci_disable_msix(pdev);
- } else {
- mwifiex_dbg(adapter, INFO,
- "%s(): calling free_irq()\n", __func__);
- free_irq(card->dev->irq, &card->share_irq_ctx);
+ card->msix_enable = 0;
+ pci_disable_msix(pdev);
+ } else {
+ mwifiex_dbg(adapter, INFO,
+ "%s(): calling free_irq()\n", __func__);
+ free_irq(card->dev->irq, &card->share_irq_ctx);
- if (card->msi_enable)
- pci_disable_msi(pdev);
- }
- card->adapter = NULL;
- }
+ if (card->msi_enable)
+ pci_disable_msi(pdev);
+ }
+ card->adapter = NULL;
}
/* This function initializes the PCI-E host memory space, WCB rings, etc.
@@ -3097,18 +3094,14 @@ static void mwifiex_pcie_down_dev(struct mwifiex_adapter *adapter)
adapter->seq_num = 0;
adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
- if (card) {
- if (reg->sleep_cookie)
- mwifiex_pcie_delete_sleep_cookie_buf(adapter);
-
- mwifiex_pcie_delete_cmdrsp_buf(adapter);
- mwifiex_pcie_delete_evtbd_ring(adapter);
- mwifiex_pcie_delete_rxbd_ring(adapter);
- mwifiex_pcie_delete_txbd_ring(adapter);
- card->cmdrsp_buf = NULL;
- }
+ if (reg->sleep_cookie)
+ mwifiex_pcie_delete_sleep_cookie_buf(adapter);
- return;
+ mwifiex_pcie_delete_cmdrsp_buf(adapter);
+ mwifiex_pcie_delete_evtbd_ring(adapter);
+ mwifiex_pcie_delete_rxbd_ring(adapter);
+ mwifiex_pcie_delete_txbd_ring(adapter);
+ card->cmdrsp_buf = NULL;
}
static struct mwifiex_if_ops pcie_ops = {
--
1.8.1.4
^ permalink raw reply related
* [PATCH 11/12] mwifiex: stop checking for NULL drvata/intfdata
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
These are never NULL, so stop making people think they might be.
I don't change this for SDIO because SDIO has a racy card-reset handler
that reallocates this struct. I'd rather not touch that mess right now.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 14 +++++---------
drivers/net/wireless/marvell/mwifiex/usb.c | 15 +++------------
2 files changed, 8 insertions(+), 21 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 04b9961..c061d00 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -102,10 +102,6 @@ static int mwifiex_pcie_suspend(struct device *dev)
struct pci_dev *pdev = to_pci_dev(dev);
card = pci_get_drvdata(pdev);
- if (!card) {
- dev_err(dev, "adapter structure is not valid\n");
- return 0;
- }
/* Might still be loading firmware */
wait_for_completion(&card->fw_done);
@@ -148,8 +144,9 @@ static int mwifiex_pcie_resume(struct device *dev)
struct pci_dev *pdev = to_pci_dev(dev);
card = pci_get_drvdata(pdev);
- if (!card || !card->adapter) {
- dev_err(dev, "Card or adapter structure is not valid\n");
+
+ if (!card->adapter) {
+ dev_err(dev, "adapter structure is not valid\n");
return 0;
}
@@ -222,8 +219,6 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
struct mwifiex_private *priv;
card = pci_get_drvdata(pdev);
- if (!card)
- return;
wait_for_completion(&card->fw_done);
@@ -2216,7 +2211,8 @@ static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context)
}
card = pci_get_drvdata(pdev);
- if (!card || !card->adapter) {
+
+ if (!card->adapter) {
pr_err("info: %s: card=%p adapter=%p\n", __func__, card,
card ? card->adapter : NULL);
goto exit;
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index c26daf4..78b46fa 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -503,11 +503,6 @@ static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
struct usb_tx_data_port *port;
int i, j;
- if (!card) {
- dev_err(&intf->dev, "%s: card is NULL\n", __func__);
- return 0;
- }
-
/* Might still be loading firmware */
wait_for_completion(&card->fw_done);
@@ -574,8 +569,9 @@ static int mwifiex_usb_resume(struct usb_interface *intf)
struct mwifiex_adapter *adapter;
int i;
- if (!card || !card->adapter) {
- pr_err("%s: card or card->adapter is NULL\n", __func__);
+ if (!card->adapter) {
+ dev_err(&intf->dev, "%s: card->adapter is NULL\n",
+ __func__);
return 0;
}
adapter = card->adapter;
@@ -617,11 +613,6 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
struct usb_card_rec *card = usb_get_intfdata(intf);
struct mwifiex_adapter *adapter;
- if (!card) {
- dev_err(&intf->dev, "%s: card is NULL\n", __func__);
- return;
- }
-
wait_for_completion(&card->fw_done);
adapter = card->adapter;
--
1.8.1.4
^ permalink raw reply related
* [PATCH 10/12] mwifiex: sdio: don't check for NULL sdio_func
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
sdio_func is retrieved via container_of() and should never be NULL.
Checking for NULL just makes the logic more confusing than necessary.
Stop doing that.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/sdio.c | 40 +++++++++++------------------
1 file changed, 15 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 375d0a5..8f0f072 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -231,15 +231,10 @@ static int mwifiex_sdio_resume(struct device *dev)
struct mwifiex_adapter *adapter;
mmc_pm_flag_t pm_flag = 0;
- if (func) {
- pm_flag = sdio_get_host_pm_caps(func);
- card = sdio_get_drvdata(func);
- if (!card || !card->adapter) {
- pr_err("resume: invalid card or adapter\n");
- return 0;
- }
- } else {
- pr_err("resume: sdio_func is not specified\n");
+ pm_flag = sdio_get_host_pm_caps(func);
+ card = sdio_get_drvdata(func);
+ if (!card || !card->adapter) {
+ dev_err(dev, "resume: invalid card or adapter\n");
return 0;
}
@@ -320,23 +315,18 @@ static int mwifiex_sdio_suspend(struct device *dev)
mmc_pm_flag_t pm_flag = 0;
int ret = 0;
- if (func) {
- pm_flag = sdio_get_host_pm_caps(func);
- pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
- sdio_func_id(func), pm_flag);
- if (!(pm_flag & MMC_PM_KEEP_POWER)) {
- pr_err("%s: cannot remain alive while host is"
- " suspended\n", sdio_func_id(func));
- return -ENOSYS;
- }
+ pm_flag = sdio_get_host_pm_caps(func);
+ pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
+ sdio_func_id(func), pm_flag);
+ if (!(pm_flag & MMC_PM_KEEP_POWER)) {
+ dev_err(dev, "%s: cannot remain alive while host is"
+ " suspended\n", sdio_func_id(func));
+ return -ENOSYS;
+ }
- card = sdio_get_drvdata(func);
- if (!card) {
- dev_err(dev, "suspend: invalid card\n");
- return 0;
- }
- } else {
- pr_err("suspend: sdio_func is not specified\n");
+ card = sdio_get_drvdata(func);
+ if (!card) {
+ dev_err(dev, "suspend: invalid card\n");
return 0;
}
--
1.8.1.4
^ permalink raw reply related
* [PATCH 09/12] mwifiex: usb: handle HS failures
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
SDIO and PCIe drivers handle this. Let's imitate it.
Not tested.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/usb.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index 70126c3..c26daf4 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -521,7 +521,14 @@ static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
mwifiex_dbg(adapter, WARN,
"Device already suspended\n");
- mwifiex_enable_hs(adapter);
+ /* Enable the Host Sleep */
+ if (!mwifiex_enable_hs(adapter)) {
+ mwifiex_dbg(adapter, ERROR,
+ "cmd: failed to suspend\n");
+ adapter->hs_enabling = false;
+ return -EFAULT;
+ }
+
/* 'is_suspended' flag indicates device is suspended.
* It must be set here before the usb_kill_urb() calls. Reason
--
1.8.1.4
^ permalink raw reply related
* [PATCH 08/12] mwifiex: reset card->adapter during device unregister
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Xinming Hu, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Xinming Hu <huxm@marvell.com>
card->adapter gets initialized in mwifiex_register_dev(). As it's not
cleared in mwifiex_unregister_dev(), we may end up accessing the memory
which is already free in below scenario.
Scenario: Driver initialization is failed due to incorrect firmware or
some other reason. Meanwhile device reboot/unload occurs.
This is safe, now that we've properly synchronized suspend() and
remove() with the FW initialization thread; now that code can simply
check for 'card->adapter == NULL' and exit safely.
Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 1 +
drivers/net/wireless/marvell/mwifiex/sdio.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index b635563..04b9961 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -3017,6 +3017,7 @@ static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
if (card->msi_enable)
pci_disable_msi(pdev);
}
+ card->adapter = NULL;
}
}
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 4d314c1..375d0a5 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -2070,6 +2070,7 @@ mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
struct sdio_mmc_card *card = adapter->card;
if (adapter->card) {
+ card->adapter = NULL;
sdio_claim_host(card->func);
sdio_disable_func(card->func);
sdio_release_host(card->func);
--
1.8.1.4
^ permalink raw reply related
* [PATCH 07/12] mwifiex: resolve suspend() race with async FW init failure
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 11 +++++++++--
drivers/net/wireless/marvell/mwifiex/sdio.c | 11 +++++++++--
drivers/net/wireless/marvell/mwifiex/usb.c | 12 ++++++++++--
3 files changed, 28 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 32fbb91..b635563 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -102,12 +102,19 @@ static int mwifiex_pcie_suspend(struct device *dev)
struct pci_dev *pdev = to_pci_dev(dev);
card = pci_get_drvdata(pdev);
- if (!card || !card->adapter) {
- pr_err("Card or adapter structure is not valid\n");
+ if (!card) {
+ dev_err(dev, "adapter structure is not valid\n");
return 0;
}
+ /* Might still be loading firmware */
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
+ if (!adapter) {
+ dev_err(dev, "card is not valid\n");
+ return 0;
+ }
/* Enable the Host Sleep */
if (!mwifiex_enable_hs(adapter)) {
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index a750edb..4d314c1 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -331,8 +331,8 @@ static int mwifiex_sdio_suspend(struct device *dev)
}
card = sdio_get_drvdata(func);
- if (!card || !card->adapter) {
- pr_err("suspend: invalid card or adapter\n");
+ if (!card) {
+ dev_err(dev, "suspend: invalid card\n");
return 0;
}
} else {
@@ -340,7 +340,14 @@ static int mwifiex_sdio_suspend(struct device *dev)
return 0;
}
+ /* Might still be loading firmware */
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
+ if (!adapter) {
+ dev_err(dev, "card is not valid\n");
+ return 0;
+ }
/* Enable platform specific wakeup interrupt */
if (card->plt_wake_cfg && card->plt_wake_cfg->irq_wifi >= 0) {
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index a61455c..70126c3 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -503,11 +503,19 @@ static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
struct usb_tx_data_port *port;
int i, j;
- if (!card || !card->adapter) {
- pr_err("%s: card or card->adapter is NULL\n", __func__);
+ if (!card) {
+ dev_err(&intf->dev, "%s: card is NULL\n", __func__);
return 0;
}
+
+ /* Might still be loading firmware */
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
+ if (!adapter) {
+ dev_err(&intf->dev, "card is not valid\n");
+ return 0;
+ }
if (unlikely(adapter->is_suspended))
mwifiex_dbg(adapter, WARN,
--
1.8.1.4
^ permalink raw reply related
* [PATCH 06/12] mwifiex: don't pretend to resume while remove()'ing
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
The device core will not allow suspend() to race with remove().
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 5 -----
drivers/net/wireless/marvell/mwifiex/sdio.c | 3 ---
drivers/net/wireless/marvell/mwifiex/usb.c | 5 -----
3 files changed, 13 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index fb34b99..32fbb91 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -225,11 +225,6 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
return;
if (user_rmmod && !adapter->mfg_mode) {
-#ifdef CONFIG_PM_SLEEP
- if (adapter->is_suspended)
- mwifiex_pcie_resume(&pdev->dev);
-#endif
-
mwifiex_deauthenticate_all(adapter);
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 1f6ebde..a750edb 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -292,9 +292,6 @@ mwifiex_sdio_remove(struct sdio_func *func)
mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
if (user_rmmod && !adapter->mfg_mode) {
- if (adapter->is_suspended)
- mwifiex_sdio_resume(adapter->dev);
-
mwifiex_deauthenticate_all(adapter);
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index c20ff2f..a61455c 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -614,11 +614,6 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
return;
if (user_rmmod && !adapter->mfg_mode) {
-#ifdef CONFIG_PM
- if (adapter->is_suspended)
- mwifiex_usb_resume(intf);
-#endif
-
mwifiex_deauthenticate_all(adapter);
mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
--
1.8.1.4
^ permalink raw reply related
* [PATCH 05/12] mwifiex: remove redundant pdev check in suspend/resume handlers
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Amitkumar Karwar <akarwar@marvell.com>
to_pci_dev() would just do struct offset arithmetic on struct
device to get 'pdev' pointer. We never get NULL pdev pointer.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 22 ++++++----------------
1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 5507c89..fb34b99 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -101,14 +101,9 @@ static int mwifiex_pcie_suspend(struct device *dev)
struct pcie_service_card *card;
struct pci_dev *pdev = to_pci_dev(dev);
- if (pdev) {
- card = pci_get_drvdata(pdev);
- if (!card || !card->adapter) {
- pr_err("Card or adapter structure is not valid\n");
- return 0;
- }
- } else {
- pr_err("PCIE device is not specified\n");
+ card = pci_get_drvdata(pdev);
+ if (!card || !card->adapter) {
+ pr_err("Card or adapter structure is not valid\n");
return 0;
}
@@ -145,14 +140,9 @@ static int mwifiex_pcie_resume(struct device *dev)
struct pcie_service_card *card;
struct pci_dev *pdev = to_pci_dev(dev);
- if (pdev) {
- card = pci_get_drvdata(pdev);
- if (!card || !card->adapter) {
- pr_err("Card or adapter structure is not valid\n");
- return 0;
- }
- } else {
- pr_err("PCIE device is not specified\n");
+ card = pci_get_drvdata(pdev);
+ if (!card || !card->adapter) {
+ dev_err(dev, "Card or adapter structure is not valid\n");
return 0;
}
--
1.8.1.4
^ permalink raw reply related
* [PATCH 04/12] mwifiex: resolve races between async FW init (failure) and device removal
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
It's possible for the FW init sequence to fail, which will trigger a
device cleanup sequence in mwifiex_fw_dpc(). This sequence can race with
device suspend() or remove() (e.g., reboot or unbind), and can trigger
use-after-free issues. Currently, this driver attempts (poorly) to
synchronize remove() using a semaphore, but it doesn't protect some of
the critical sections properly. Particularly, we grab a pointer to the
adapter struct (card->adapter) without checking if it's being freed or
not. We later do a NULL check on the adapter, but that doesn't work if
the adapter was freed.
Also note that the PCIe interface driver doesn't ever set card->adapter
to NULL, so even if we get the synchronization right, we still might try
to redo the cleanup in ->remove(), even if the FW init failure sequence
already did it.
This patch replaces the static semaphore with a per-device completion
struct, and uses that completion to synchronize the remove() thread with
the mwifiex_fw_dpc(). A future patch will utilize this completion to
synchronize the suspend() thread as well.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/main.c | 46 ++++++++++-------------------
drivers/net/wireless/marvell/mwifiex/main.h | 10 +++++--
drivers/net/wireless/marvell/mwifiex/pcie.c | 18 +++++------
drivers/net/wireless/marvell/mwifiex/pcie.h | 2 ++
drivers/net/wireless/marvell/mwifiex/sdio.c | 18 +++++------
drivers/net/wireless/marvell/mwifiex/sdio.h | 2 ++
drivers/net/wireless/marvell/mwifiex/usb.c | 23 +++++++--------
drivers/net/wireless/marvell/mwifiex/usb.h | 2 ++
8 files changed, 53 insertions(+), 68 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index f559ead..206be45 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -525,7 +525,6 @@ static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
struct mwifiex_private *priv;
struct mwifiex_adapter *adapter = context;
struct mwifiex_fw_image fw;
- struct semaphore *sem = adapter->card_sem;
bool init_failed = false;
struct wireless_dev *wdev;
@@ -674,7 +673,8 @@ done:
}
if (init_failed)
mwifiex_free_adapter(adapter);
- up(sem);
+ /* Tell all current and future waiters we're finished */
+ complete_all(adapter->fw_done);
return;
}
@@ -1369,7 +1369,7 @@ static void mwifiex_main_work_queue(struct work_struct *work)
* code is extracted from mwifiex_remove_card()
*/
static int
-mwifiex_shutdown_sw(struct mwifiex_adapter *adapter, struct semaphore *sem)
+mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
int i;
@@ -1377,8 +1377,9 @@ mwifiex_shutdown_sw(struct mwifiex_adapter *adapter, struct semaphore *sem)
if (!adapter)
goto exit_return;
- if (down_interruptible(sem))
- goto exit_sem_err;
+ wait_for_completion(adapter->fw_done);
+ /* Caller should ensure we aren't suspending while this happens */
+ reinit_completion(adapter->fw_done);
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
mwifiex_deauthenticate(priv, NULL);
@@ -1435,8 +1436,6 @@ mwifiex_shutdown_sw(struct mwifiex_adapter *adapter, struct semaphore *sem)
rtnl_unlock();
}
- up(sem);
-exit_sem_err:
mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
exit_return:
return 0;
@@ -1446,21 +1445,18 @@ exit_return:
* code is extracted from mwifiex_add_card()
*/
static int
-mwifiex_reinit_sw(struct mwifiex_adapter *adapter, struct semaphore *sem,
+mwifiex_reinit_sw(struct mwifiex_adapter *adapter, struct completion *fw_done,
struct mwifiex_if_ops *if_ops, u8 iface_type)
{
char fw_name[32];
struct pcie_service_card *card = adapter->card;
- if (down_interruptible(sem))
- goto exit_sem_err;
-
mwifiex_init_lock_list(adapter);
if (adapter->if_ops.up_dev)
adapter->if_ops.up_dev(adapter);
adapter->iface_type = iface_type;
- adapter->card_sem = sem;
+ adapter->fw_done = fw_done;
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
adapter->surprise_removed = false;
@@ -1511,7 +1507,8 @@ mwifiex_reinit_sw(struct mwifiex_adapter *adapter, struct semaphore *sem,
}
strcpy(adapter->fw_name, fw_name);
mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
- up(sem);
+
+ complete_all(adapter->fw_done);
return 0;
err_init_fw:
@@ -1531,8 +1528,7 @@ err_init_fw:
err_kmalloc:
mwifiex_terminate_workqueue(adapter);
adapter->surprise_removed = true;
- up(sem);
-exit_sem_err:
+ complete_all(adapter->fw_done);
mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
return -1;
@@ -1547,12 +1543,12 @@ void mwifiex_do_flr(struct mwifiex_adapter *adapter, bool prepare)
struct mwifiex_if_ops if_ops;
if (!prepare) {
- mwifiex_reinit_sw(adapter, adapter->card_sem, &if_ops,
+ mwifiex_reinit_sw(adapter, adapter->fw_done, &if_ops,
adapter->iface_type);
} else {
memcpy(&if_ops, &adapter->if_ops,
sizeof(struct mwifiex_if_ops));
- mwifiex_shutdown_sw(adapter, adapter->card_sem);
+ mwifiex_shutdown_sw(adapter);
}
}
EXPORT_SYMBOL_GPL(mwifiex_do_flr);
@@ -1571,21 +1567,18 @@ EXPORT_SYMBOL_GPL(mwifiex_do_flr);
* - Add logical interfaces
*/
int
-mwifiex_add_card(void *card, struct semaphore *sem,
+mwifiex_add_card(void *card, struct completion *fw_done,
struct mwifiex_if_ops *if_ops, u8 iface_type)
{
struct mwifiex_adapter *adapter;
- if (down_interruptible(sem))
- goto exit_sem_err;
-
if (mwifiex_register(card, if_ops, (void **)&adapter)) {
pr_err("%s: software init failed\n", __func__);
goto err_init_sw;
}
adapter->iface_type = iface_type;
- adapter->card_sem = sem;
+ adapter->fw_done = fw_done;
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
adapter->surprise_removed = false;
@@ -1654,9 +1647,7 @@ err_kmalloc:
mwifiex_free_adapter(adapter);
err_init_sw:
- up(sem);
-exit_sem_err:
return -1;
}
EXPORT_SYMBOL_GPL(mwifiex_add_card);
@@ -1672,14 +1663,11 @@ EXPORT_SYMBOL_GPL(mwifiex_add_card);
* - Unregister the device
* - Free the adapter structure
*/
-int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
+int mwifiex_remove_card(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv = NULL;
int i;
- if (down_trylock(sem))
- goto exit_sem_err;
-
if (!adapter)
goto exit_remove;
@@ -1749,8 +1737,6 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
mwifiex_free_adapter(adapter);
exit_remove:
- up(sem);
-exit_sem_err:
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_remove_card);
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index 7f67f23..bbd8d63 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -20,6 +20,7 @@
#ifndef _MWIFIEX_MAIN_H_
#define _MWIFIEX_MAIN_H_
+#include <linux/completion.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
@@ -985,7 +986,10 @@ struct mwifiex_adapter {
u32 usr_dot_11ac_mcs_support;
atomic_t pending_bridged_pkts;
- struct semaphore *card_sem;
+
+ /* For synchronizing FW initialization with device lifecycle. */
+ struct completion *fw_done;
+
bool ext_scan;
u8 fw_api_ver;
u8 key_api_major_ver, key_api_minor_ver;
@@ -1413,8 +1417,8 @@ static inline u8 mwifiex_is_tdls_link_setup(u8 status)
int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
u32 func_init_shutdown);
-int mwifiex_add_card(void *, struct semaphore *, struct mwifiex_if_ops *, u8);
-int mwifiex_remove_card(struct mwifiex_adapter *, struct semaphore *);
+int mwifiex_add_card(void *, struct completion *, struct mwifiex_if_ops *, u8);
+int mwifiex_remove_card(struct mwifiex_adapter *);
void mwifiex_get_version(struct mwifiex_adapter *adapter, char *version,
int maxlen);
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index e6bea02..5507c89 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -35,8 +35,6 @@ static u8 user_rmmod;
static struct mwifiex_if_ops pcie_ops;
-static struct semaphore add_remove_card_sem;
-
static int
mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb,
size_t size, int flags)
@@ -193,6 +191,8 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
if (!card)
return -ENOMEM;
+ init_completion(&card->fw_done);
+
card->dev = pdev;
if (ent->driver_data) {
@@ -206,7 +206,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
card->pcie.can_ext_scan = data->can_ext_scan;
}
- if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
+ if (mwifiex_add_card(card, &card->fw_done, &pcie_ops,
MWIFIEX_PCIE)) {
pr_err("%s failed\n", __func__);
return -1;
@@ -228,6 +228,8 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
if (!card)
return;
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
if (!adapter || !adapter->priv_num)
return;
@@ -247,7 +249,7 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
}
- mwifiex_remove_card(card->adapter, &add_remove_card_sem);
+ mwifiex_remove_card(adapter);
}
static void mwifiex_pcie_shutdown(struct pci_dev *pdev)
@@ -3151,8 +3153,7 @@ static struct mwifiex_if_ops pcie_ops = {
/*
* This function initializes the PCIE driver module.
*
- * This initiates the semaphore and registers the device with
- * PCIE bus.
+ * This registers the device with PCIE bus.
*/
static int mwifiex_pcie_init_module(void)
{
@@ -3160,8 +3161,6 @@ static int mwifiex_pcie_init_module(void)
pr_debug("Marvell PCIe Driver\n");
- sema_init(&add_remove_card_sem, 1);
-
/* Clear the flag in case user removes the card. */
user_rmmod = 0;
@@ -3185,9 +3184,6 @@ static int mwifiex_pcie_init_module(void)
*/
static void mwifiex_pcie_cleanup_module(void)
{
- if (!down_interruptible(&add_remove_card_sem))
- up(&add_remove_card_sem);
-
/* Set the flag as user is removing this module. */
user_rmmod = 1;
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 46f99ca..ae3365d 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -22,6 +22,7 @@
#ifndef _MWIFIEX_PCIE_H
#define _MWIFIEX_PCIE_H
+#include <linux/completion.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
@@ -345,6 +346,7 @@ struct pcie_service_card {
struct pci_dev *dev;
struct mwifiex_adapter *adapter;
struct mwifiex_pcie_device pcie;
+ struct completion fw_done;
u8 txbd_flush;
u32 txbd_wrptr;
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index f04cf5a..1f6ebde 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -49,8 +49,6 @@ static u8 user_rmmod;
static struct mwifiex_if_ops sdio_ops;
static unsigned long iface_work_flags;
-static struct semaphore add_remove_card_sem;
-
static struct memory_type_mapping generic_mem_type_map[] = {
{"DUMP", NULL, 0, 0xDD},
};
@@ -156,6 +154,8 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
if (!card)
return -ENOMEM;
+ init_completion(&card->fw_done);
+
card->func = func;
card->device_id = id;
@@ -197,7 +197,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
}
}
- ret = mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
+ ret = mwifiex_add_card(card, &card->fw_done, &sdio_ops,
MWIFIEX_SDIO);
if (ret) {
dev_err(&func->dev, "add card failed\n");
@@ -283,6 +283,8 @@ mwifiex_sdio_remove(struct sdio_func *func)
if (!card)
return;
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
if (!adapter || !adapter->priv_num)
return;
@@ -300,7 +302,7 @@ mwifiex_sdio_remove(struct sdio_func *func)
mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
}
- mwifiex_remove_card(card->adapter, &add_remove_card_sem);
+ mwifiex_remove_card(adapter);
}
/*
@@ -2771,14 +2773,11 @@ static struct mwifiex_if_ops sdio_ops = {
/*
* This function initializes the SDIO driver.
*
- * This initiates the semaphore and registers the device with
- * SDIO bus.
+ * This registers the device with SDIO bus.
*/
static int
mwifiex_sdio_init_module(void)
{
- sema_init(&add_remove_card_sem, 1);
-
/* Clear the flag in case user removes the card. */
user_rmmod = 0;
@@ -2797,9 +2796,6 @@ mwifiex_sdio_init_module(void)
static void
mwifiex_sdio_cleanup_module(void)
{
- if (!down_interruptible(&add_remove_card_sem))
- up(&add_remove_card_sem);
-
/* Set the flag as user is removing this module. */
user_rmmod = 1;
cancel_work_sync(&sdio_work);
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.h b/drivers/net/wireless/marvell/mwifiex/sdio.h
index db837f1..cc0aac8 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.h
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.h
@@ -21,6 +21,7 @@
#define _MWIFIEX_SDIO_H
+#include <linux/completion.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
@@ -244,6 +245,7 @@ struct sdio_mmc_card {
struct mwifiex_adapter *adapter;
struct device_node *plt_of_node;
struct mwifiex_plt_wake_cfg *plt_wake_cfg;
+ struct completion fw_done;
const char *firmware;
const struct mwifiex_sdio_card_reg *reg;
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index 57ed834..c20ff2f 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -24,7 +24,6 @@
static u8 user_rmmod;
static struct mwifiex_if_ops usb_ops;
-static struct semaphore add_remove_card_sem;
static struct usb_device_id mwifiex_usb_table[] = {
/* 8766 */
@@ -386,6 +385,8 @@ static int mwifiex_usb_probe(struct usb_interface *intf,
if (!card)
return -ENOMEM;
+ init_completion(&card->fw_done);
+
id_vendor = le16_to_cpu(udev->descriptor.idVendor);
id_product = le16_to_cpu(udev->descriptor.idProduct);
bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
@@ -475,7 +476,7 @@ static int mwifiex_usb_probe(struct usb_interface *intf,
usb_set_intfdata(intf, card);
- ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops,
+ ret = mwifiex_add_card(card, &card->fw_done, &usb_ops,
MWIFIEX_USB);
if (ret) {
pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
@@ -601,13 +602,15 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
struct usb_card_rec *card = usb_get_intfdata(intf);
struct mwifiex_adapter *adapter;
- if (!card || !card->adapter) {
- pr_err("%s: card or card->adapter is NULL\n", __func__);
+ if (!card) {
+ dev_err(&intf->dev, "%s: card is NULL\n", __func__);
return;
}
+ wait_for_completion(&card->fw_done);
+
adapter = card->adapter;
- if (!adapter->priv_num)
+ if (!adapter || !adapter->priv_num)
return;
if (user_rmmod && !adapter->mfg_mode) {
@@ -627,7 +630,7 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
mwifiex_dbg(adapter, FATAL,
"%s: removing card\n", __func__);
- mwifiex_remove_card(adapter, &add_remove_card_sem);
+ mwifiex_remove_card(adapter);
usb_put_dev(interface_to_usbdev(intf));
}
@@ -1201,8 +1204,7 @@ static struct mwifiex_if_ops usb_ops = {
/* This function initializes the USB driver module.
*
- * This initiates the semaphore and registers the device with
- * USB bus.
+ * This registers the device with USB bus.
*/
static int mwifiex_usb_init_module(void)
{
@@ -1210,8 +1212,6 @@ static int mwifiex_usb_init_module(void)
pr_debug("Marvell USB8797 Driver\n");
- sema_init(&add_remove_card_sem, 1);
-
ret = usb_register(&mwifiex_usb_driver);
if (ret)
pr_err("Driver register failed!\n");
@@ -1231,9 +1231,6 @@ static int mwifiex_usb_init_module(void)
*/
static void mwifiex_usb_cleanup_module(void)
{
- if (!down_interruptible(&add_remove_card_sem))
- up(&add_remove_card_sem);
-
/* set the flag as user is removing this module */
user_rmmod = 1;
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.h b/drivers/net/wireless/marvell/mwifiex/usb.h
index 30e8eb8..e5f204e 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.h
+++ b/drivers/net/wireless/marvell/mwifiex/usb.h
@@ -20,6 +20,7 @@
#ifndef _MWIFIEX_USB_H
#define _MWIFIEX_USB_H
+#include <linux/completion.h>
#include <linux/usb.h>
#define USB8XXX_VID 0x1286
@@ -75,6 +76,7 @@ struct usb_card_rec {
struct mwifiex_adapter *adapter;
struct usb_device *udev;
struct usb_interface *intf;
+ struct completion fw_done;
u8 rx_cmd_ep;
struct urb_context rx_cmd;
atomic_t rx_cmd_urb_pending;
--
1.8.1.4
^ permalink raw reply related
* [PATCH 03/12] mwifiex: don't do unbalanced free()'ing in cleanup_if()
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Brian Norris
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Brian Norris <briannorris@chromium.org>
The cleanup_if() callback is the inverse of init_if(). We allocate our
'card' interface structure in the probe() function, but we free it in
cleanup_if(). That gives a few problems:
(a) we leak this memory if probe() fails before we reach init_if()
(b) we can't safely utilize 'card' after cleanup_if() -- namely, in
remove() or suspend(), both of which might race with the cleanup
paths in our asynchronous FW initialization path
Solution: just use devm_kzalloc(), which will free this structure
properly when the device is removed -- and drop the set_drvdata(...,
NULL), since the driver core does this for us. This also removes the
temptation to use drvdata == NULL as a hack for checking if the device
has been "cleaned up."
This is a preparatory step for adding a card-level completion structure
to handle our FW init vs. remove/suspend races, in addition to fixing
memory leaks.
I *do* leave the set_drvdata(..., NULL) for the hacky SDIO
mwifiex_recreate_adapter(), since the device core won't be able to clear
that one for us.
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 5 +----
drivers/net/wireless/marvell/mwifiex/sdio.c | 16 ++++++++++------
drivers/net/wireless/marvell/mwifiex/usb.c | 7 +------
3 files changed, 12 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 4aa5d91..e6bea02 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -189,7 +189,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n",
pdev->vendor, pdev->device, pdev->revision);
- card = kzalloc(sizeof(struct pcie_service_card), GFP_KERNEL);
+ card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
@@ -2820,7 +2820,6 @@ err_req_region0:
err_set_dma_mask:
pci_disable_device(pdev);
err_enable_dev:
- pci_set_drvdata(pdev, NULL);
return ret;
}
@@ -2854,9 +2853,7 @@ static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter)
pci_disable_device(pdev);
pci_release_region(pdev, 2);
pci_release_region(pdev, 0);
- pci_set_drvdata(pdev, NULL);
}
- kfree(card);
}
static int mwifiex_pcie_request_irq(struct mwifiex_adapter *adapter)
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 8718950..f04cf5a 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -152,7 +152,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
func->vendor, func->device, func->class, func->num);
- card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
+ card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
@@ -185,7 +185,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
if (ret) {
dev_err(&func->dev, "failed to enable function\n");
- goto err_free;
+ return ret;
}
/* device tree node parsing and platform specific configuration*/
@@ -210,8 +210,6 @@ err_disable:
sdio_claim_host(func);
sdio_disable_func(func);
sdio_release_host(func);
-err_free:
- kfree(card);
return ret;
}
@@ -2240,8 +2238,6 @@ static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
kfree(card->mpa_rx.len_arr);
kfree(card->mpa_tx.buf);
kfree(card->mpa_rx.buf);
- sdio_set_drvdata(card->func, NULL);
- kfree(card);
}
/*
@@ -2291,6 +2287,14 @@ static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
mwifiex_sdio_remove(func);
+ /*
+ * Normally, we would let the driver core take care of releasing these.
+ * But we're not letting the driver core handle this one. See above
+ * TODO.
+ */
+ sdio_set_drvdata(func, NULL);
+ devm_kfree(&func->dev, card);
+
/* power cycle the adapter */
sdio_claim_host(func);
mmc_hw_reset(func->card->host);
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index 73eb084..57ed834 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -382,7 +382,7 @@ static int mwifiex_usb_probe(struct usb_interface *intf,
struct usb_card_rec *card;
u16 id_vendor, id_product, bcd_device, bcd_usb;
- card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
+ card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
@@ -480,7 +480,6 @@ static int mwifiex_usb_probe(struct usb_interface *intf,
if (ret) {
pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
usb_reset_device(udev);
- kfree(card);
return ret;
}
@@ -630,11 +629,7 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
"%s: removing card\n", __func__);
mwifiex_remove_card(adapter, &add_remove_card_sem);
- usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
- kfree(card);
-
- return;
}
static struct usb_driver mwifiex_usb_driver = {
--
1.8.1.4
^ permalink raw reply related
* [PATCH 02/12] mwifiex: check tx_hw_pending before downloading sleep confirm
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Shengzhen Li
In-Reply-To: <1477900940-10549-1-git-send-email-huxinming820@marvell.com>
From: Shengzhen Li <szli@marvell.com>
This patch will only allow downloading sleep confirm
when no tx done interrupt is pending in the hardware.
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Shengzhen Li <szli@marvell.com>
Change-Id: I6d6955b4a2de0ad791ca28f0f635d636a2c7e406
---
drivers/net/wireless/marvell/mwifiex/cmdevt.c | 4 ++--
drivers/net/wireless/marvell/mwifiex/init.c | 1 +
drivers/net/wireless/marvell/mwifiex/main.h | 1 +
drivers/net/wireless/marvell/mwifiex/pcie.c | 5 +++++
4 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 9075be5..25a7475 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -1118,14 +1118,14 @@ mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
void
mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
{
- if (!adapter->cmd_sent &&
+ if (!adapter->cmd_sent && !atomic_read(&adapter->tx_hw_pending) &&
!adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
mwifiex_dnld_sleep_confirm_cmd(adapter);
else
mwifiex_dbg(adapter, CMD,
"cmd: Delay Sleep Confirm (%s%s%s%s)\n",
(adapter->cmd_sent) ? "D" : "",
- (adapter->data_sent) ? "T" : "",
+ atomic_read(&adapter->tx_hw_pending) ? "T" : "",
(adapter->curr_cmd) ? "C" : "",
(IS_CARD_RX_RCVD(adapter)) ? "R" : "");
}
diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c
index 82839d9..b36cb3f 100644
--- a/drivers/net/wireless/marvell/mwifiex/init.c
+++ b/drivers/net/wireless/marvell/mwifiex/init.c
@@ -270,6 +270,7 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
adapter->adhoc_11n_enabled = false;
mwifiex_wmm_init(adapter);
+ atomic_set(&adapter->tx_hw_pending, 0);
sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
adapter->sleep_cfm->data;
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index d61fe3a..7f67f23 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -857,6 +857,7 @@ struct mwifiex_adapter {
atomic_t rx_pending;
atomic_t tx_pending;
atomic_t cmd_pending;
+ atomic_t tx_hw_pending;
struct workqueue_struct *workqueue;
struct work_struct main_work;
struct workqueue_struct *rx_workqueue;
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 063c707..4aa5d91 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -516,6 +516,7 @@ static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter)
}
}
+ atomic_set(&adapter->tx_hw_pending, 0);
return 0;
}
@@ -689,6 +690,7 @@ static void mwifiex_cleanup_txq_ring(struct mwifiex_adapter *adapter)
card->tx_buf_list[i] = NULL;
}
+ atomic_set(&adapter->tx_hw_pending, 0);
return;
}
@@ -1126,6 +1128,7 @@ static int mwifiex_pcie_send_data_complete(struct mwifiex_adapter *adapter)
-1);
else
mwifiex_write_data_complete(adapter, skb, 0, 0);
+ atomic_dec(&adapter->tx_hw_pending);
}
card->tx_buf_list[wrdoneidx] = NULL;
@@ -1218,6 +1221,7 @@ mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb,
wrindx = (card->txbd_wrptr & reg->tx_mask) >> reg->tx_start_ptr;
buf_pa = MWIFIEX_SKB_DMA_ADDR(skb);
card->tx_buf_list[wrindx] = skb;
+ atomic_inc(&adapter->tx_hw_pending);
if (reg->pfu_enabled) {
desc2 = card->txbd_ring[wrindx];
@@ -1295,6 +1299,7 @@ mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb,
done_unmap:
mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE);
card->tx_buf_list[wrindx] = NULL;
+ atomic_dec(&adapter->tx_hw_pending);
if (reg->pfu_enabled)
memset(desc2, 0, sizeof(*desc2));
else
--
1.8.1.4
^ permalink raw reply related
* [PATCH 01/12] mwifiex: fix power save issue when suspend
From: Xinming Hu @ 2016-10-31 8:02 UTC (permalink / raw)
To: Linux Wireless
Cc: Kalle Valo, Brian Norris, Dmitry Torokhov, Amitkumar Karwar,
Cathy Luo, Shengzhen Li
From: Shengzhen Li <szli@marvell.com>
This patch fixes a corner case for "FROMLIST: mwifiex: fix corner case
power save issue", main process will check the power save condition in
PS_PRE_SLEEP status so the sleep handshake could continue.
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Shengzhen Li <szli@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
BUG=chrome-os-partner:58164
TEST=stress Wifi w/ power_save enabled
Change-Id: I5a36d9eaeb7fe5faaccc533e0d1ba1f3253666dc
---
drivers/net/wireless/marvell/mwifiex/cmdevt.c | 3 ++-
drivers/net/wireless/marvell/mwifiex/main.c | 5 +++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 5347728..9075be5 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -1123,8 +1123,9 @@ mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
mwifiex_dnld_sleep_confirm_cmd(adapter);
else
mwifiex_dbg(adapter, CMD,
- "cmd: Delay Sleep Confirm (%s%s%s)\n",
+ "cmd: Delay Sleep Confirm (%s%s%s%s)\n",
(adapter->cmd_sent) ? "D" : "",
+ (adapter->data_sent) ? "T" : "",
(adapter->curr_cmd) ? "C" : "",
(IS_CARD_RX_RCVD(adapter)) ? "R" : "");
}
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 2478ccd..f559ead 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -308,6 +308,11 @@ process_start:
/* We have tried to wakeup the card already */
if (adapter->pm_wakeup_fw_try)
break;
+ if (adapter->ps_state == PS_STATE_PRE_SLEEP) {
+ if (!adapter->cmd_sent && !adapter->curr_cmd)
+ mwifiex_check_ps_cond(adapter);
+ }
+
if (adapter->ps_state != PS_STATE_AWAKE)
break;
if (adapter->tx_lock_flag) {
--
1.8.1.4
^ permalink raw reply related
* [TEST V2 GIT-SEND-EMAIL,PATCH 01/11] mwifiex: fix power save issue when suspend
From: Xinming Hu @ 2016-10-31 7:42 UTC (permalink / raw)
To: linux-wireless; +Cc: Shengzhen Li
From: Shengzhen Li <szli@marvell.com>
This patch fixes a corner case for "FROMLIST: mwifiex: fix corner case
power save issue", main process will check the power save condition in
PS_PRE_SLEEP status so the sleep handshake could continue.
Signed-off-by: Shengzhen Li <szli@marvell.com>
---
drivers/net/wireless/marvell/mwifiex/cmdevt.c | 3 ++-
drivers/net/wireless/marvell/mwifiex/main.c | 5 +++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 5347728..9075be5 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -1123,8 +1123,9 @@ mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
mwifiex_dnld_sleep_confirm_cmd(adapter);
else
mwifiex_dbg(adapter, CMD,
- "cmd: Delay Sleep Confirm (%s%s%s)\n",
+ "cmd: Delay Sleep Confirm (%s%s%s%s)\n",
(adapter->cmd_sent) ? "D" : "",
+ (adapter->data_sent) ? "T" : "",
(adapter->curr_cmd) ? "C" : "",
(IS_CARD_RX_RCVD(adapter)) ? "R" : "");
}
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 2478ccd..f559ead 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -308,6 +308,11 @@ process_start:
/* We have tried to wakeup the card already */
if (adapter->pm_wakeup_fw_try)
break;
+ if (adapter->ps_state == PS_STATE_PRE_SLEEP) {
+ if (!adapter->cmd_sent && !adapter->curr_cmd)
+ mwifiex_check_ps_cond(adapter);
+ }
+
if (adapter->ps_state != PS_STATE_AWAKE)
break;
if (adapter->tx_lock_flag) {
--
1.8.1.4
^ permalink raw reply related
* Re: Backwards 11ac
From: Sebastian Gottschall @ 2016-10-30 23:43 UTC (permalink / raw)
To: James Cloos, linux-wireless
In-Reply-To: <m3oa21ftno.fsf@carbon.jhcloos.org>
ath10k cannot show tx rates right now in a easy way. since tx rate
handling is done by the cards own firmware and not by the mac80211
wireless stack
Sebastian
Am 30.10.2016 um 21:50 schrieb James Cloos:
> I recently received my turris omnia and put it into operation yesterday.
>
> (It is only doing wireless; I have a different box for my main router.)
>
> All of the machines on the wlan show backwards transfer speeds; they
> upload reasonable fast but downloads are in the kbit/s range.
>
> That applies to the both the 11ac-capable machines and the 11n-on-2.4
> machines.
>
> Luci's status/overview page shows 'Bitrate: 6 Mbit/s' for the ath10k and
> 'Bitrate: 61.5 Mbit/s' for the ath9k.
>
> (The two wireless cards in it are:
>
> 01:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
> 02:00.0 Network controller: Qualcomm Atheros QCA986x/988x 802.11ac Wireless Network Adapter
> )
>
> Googling has not helped me figure out how to get propper bandwidth.
> All of the search results were about wan links, not about wlan links.
>
> What should I look at to diagnose this?
>
> -JimC
--
Mit freundlichen Grüssen / Regards
Sebastian Gottschall / CTO
NewMedia-NET GmbH - DD-WRT
Firmensitz: Berliner Ring 101, 64625 Bensheim
Registergericht: Amtsgericht Darmstadt, HRB 25473
Geschäftsführer: Peter Steinhäuser, Christian Scheele
http://www.dd-wrt.com
email: s.gottschall@dd-wrt.com
Tel.: +496251-582650 / Fax: +496251-5826565
^ permalink raw reply
* Re: [PATCH 2/2] rtl8xxxu: Fix for bogus data used to determine macpower
From: Jes Sorensen @ 2016-10-30 23:02 UTC (permalink / raw)
To: John Heenan; +Cc: Kalle Valo, linux-wireless, netdev, linux-kernel
In-Reply-To: <CAAye0QN0s1S25tDPNWdM6fsVNaO-wLuSy_RoOSoXeuSMeD4oNA@mail.gmail.com>
John Heenan <john@zgus.com> writes:
> Thanks for your reply.
>
> The code was tested on a Cube i9 which has an internal rtl8723bu.
>
> No other devices were tested.
>
> I am happy to accept in an ideal context hard coding macpower is
> undesirable, the comment is undesirable and it is wrong to assume the
> issue is not unique to the rtl8723bu.
>
> Your reply is idealistic. What can I do now? I should of course have
> factored out other untested devices in my patches. The apparent
> concern you have with process over outcome is a useful lesson.
>
> We are not in an ideal situation. The comment is of course relevant
> and useful to starting a process to fixing a real bug I do not have
> sufficient information to refine any further for and others do. In the
> circumstances nothing really more can be expected.
Well you should start by reporting the issue and either providing a
patch that only affects 8723bu, or work on a generic solution. I
appreciate patches, but I do not appreciate patches that will make
something work for one person and break for everyone else - I spent a
lot of time making sure the driver works across the different devices.
The comment violates all Linux standards - first rule when modifying
code is to respect the style of the code you are dealing with.
Code is 80 characters wide, and comments are /* */ never the ugly C++
crap.
> My patch cover letter, [PATCH 0/2] provides evidence of a mess with
> regard to determining macpower for the rtl8723bu and what is
> subsequently required. This is important.
>
> The kernel driver code is very poorly documented and there is not a
> single source reference to device documentation. For example macpower
> is noting more than a setting that is true or false according to
> whether a read of a particular register return 0xef or not. Such value
> was never obtained so a full init sequence was never performed.
The kernel driver is documented with the information I have - there is
NO device documentation because Realtek refuses to provide any. I have
written the driver based on what I have retried by reading the vendor
drivers. If you can provide better documentation, I certainly would love
to get it.
> It would be helpful if you could provide a link to device references.
> As it is, how am I supposed to revise the patch without relevant
> information?
Look at the USB device table, it shows you which devices are supported.
> My patch code works with the Cube i9, as is, despite a lack of
> adequate information. Before it did not. That is a powerful statement
The driver works with a lot of different devices in itself that is a
powerful statement!
Yes I want to see it work with as many devices as possible, but just
moving things around without balancing it and not explaining why is not
a fix. If we move more of the init sequence to _start() you also have to
move matching pieces to _stop().
Jes
^ permalink raw reply
* Backwards 11ac
From: James Cloos @ 2016-10-30 20:50 UTC (permalink / raw)
To: linux-wireless
I recently received my turris omnia and put it into operation yesterday.
(It is only doing wireless; I have a different box for my main router.)
All of the machines on the wlan show backwards transfer speeds; they
upload reasonable fast but downloads are in the kbit/s range.
That applies to the both the 11ac-capable machines and the 11n-on-2.4
machines.
Luci's status/overview page shows 'Bitrate: 6 Mbit/s' for the ath10k and
'Bitrate: 61.5 Mbit/s' for the ath9k.
(The two wireless cards in it are:
01:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
02:00.0 Network controller: Qualcomm Atheros QCA986x/988x 802.11ac Wireless Network Adapter
)
Googling has not helped me figure out how to get propper bandwidth.
All of the search results were about wan links, not about wlan links.
What should I look at to diagnose this?
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
^ permalink raw reply
* Re: [PATCH v6] mwifiex: parse device tree node for PCIe
From: Rob Herring @ 2016-10-30 20:41 UTC (permalink / raw)
To: Rajat Jain
Cc: linux-wireless, devicetree, Xinming Hu, Amitkumar Karwar,
Brian Norris, Kalle Valo, rajatxjain
In-Reply-To: <1477084869-15612-1-git-send-email-rajatja@google.com>
On Fri, Oct 21, 2016 at 02:21:09PM -0700, Rajat Jain wrote:
> From: Xinming Hu <huxm@marvell.com>
>
> This patch derives device tree node from pcie bus layer framework, and
> fixes a minor memory leak in mwifiex_pcie_probe() (in failure path).
> Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
> marvell-8xxx.txt) to accommodate PCIe changes.
>
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
> Signed-off-by: Rajat Jain <rajatja@google.com>
> Reviewed-by: Brian Norris <briannorris@chromium.org>
> ---
> v2: Included vendor and product IDs in compatible strings for PCIe
> chipsets(Rob Herring)
> v3: Patch is created using -M option so that it will only include diff of
> original and renamed files(Rob Herring)
> Resend v3: Resending the patch because I missed to include device tree mailing
> while sending v3.
> v4: Fix error handling, also move-on even if no device tree node is present.
> v5: Update commit log to include memory leak, return -EINVAL instead of -1.
> v6: Remove an unnecessary error print, fix typo in commit log
>
> .../{marvell-sd8xxx.txt => marvell-8xxx.txt} | 8 +++--
> drivers/net/wireless/marvell/mwifiex/pcie.c | 36 +++++++++++++++++++---
> drivers/net/wireless/marvell/mwifiex/sta_cmd.c | 3 +-
> 3 files changed, 39 insertions(+), 8 deletions(-)
> rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)
>
> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> similarity index 91%
> rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> index c421aba..dfe5f8e 100644
> --- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> @@ -1,8 +1,8 @@
> -Marvell 8897/8997 (sd8897/sd8997) SDIO devices
> +Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
> ------
>
> -This node provides properties for controlling the marvell sdio wireless device.
> -The node is expected to be specified as a child node to the SDIO controller that
> +This node provides properties for controlling the marvell sdio/pcie wireless device.
s/marvell/Marvell/
s/sdio\/pcie/SDIO\/PCIE/
> +The node is expected to be specified as a child node to the SDIO/PCIE controller that
> connects the device to the system.
>
> Required properties:
> @@ -10,6 +10,8 @@ Required properties:
> - compatible : should be one of the following:
> * "marvell,sd8897"
> * "marvell,sd8997"
> + * "pci11ab,2b42"
> + * "pci1b4b,2b42"
I think I already said this, but you have the vendor and product IDs
reversed.
Rob
^ permalink raw reply
* Re: [PATCH 2/2] rtl8xxxu: Fix for bogus data used to determine macpower
From: John Heenan @ 2016-10-30 13:56 UTC (permalink / raw)
To: Jes Sorensen; +Cc: Kalle Valo, linux-wireless, netdev, linux-kernel
In-Reply-To: <wrfjpomidp1v.fsf@redhat.com>
Thanks for your reply.
The code was tested on a Cube i9 which has an internal rtl8723bu.
No other devices were tested.
I am happy to accept in an ideal context hard coding macpower is
undesirable, the comment is undesirable and it is wrong to assume the
issue is not unique to the rtl8723bu.
Your reply is idealistic. What can I do now? I should of course have
factored out other untested devices in my patches. The apparent
concern you have with process over outcome is a useful lesson.
We are not in an ideal situation. The comment is of course relevant
and useful to starting a process to fixing a real bug I do not have
sufficient information to refine any further for and others do. In the
circumstances nothing really more can be expected.
My patch cover letter, [PATCH 0/2] provides evidence of a mess with
regard to determining macpower for the rtl8723bu and what is
subsequently required. This is important.
The kernel driver code is very poorly documented and there is not a
single source reference to device documentation. For example macpower
is noting more than a setting that is true or false according to
whether a read of a particular register return 0xef or not. Such value
was never obtained so a full init sequence was never performed.
It would be helpful if you could provide a link to device references.
As it is, how am I supposed to revise the patch without relevant
information?
My patch code works with the Cube i9, as is, despite a lack of
adequate information. Before it did not. That is a powerful statement
Have a nice day.
John Heenan
On 30 October 2016 at 22:00, Jes Sorensen <Jes.Sorensen@redhat.com> wrote:
> John Heenan <john@zgus.com> writes:
>> Code tests show data returned by rtl8xxxu_read8(priv, REG_CR), used to set
>> macpower, is never 0xea. It is only ever 0x01 (first time after modprobe)
>> using wpa_supplicant and 0x00 thereafter using wpa_supplicant. These results
>> occurs with 'Fix for authentication failure' [PATCH 1/2] in place.
>>
>> Whatever was returned, code tests always showed that at least
>> rtl8xxxu_init_queue_reserved_page(priv);
>> is always required. Not called if macpower set to true.
>>
>> Please see cover letter, [PATCH 0/2], for more information from tests.
>>
>
> Sorry but this patch is neither serious nor acceptable. First of all,
> hardcoding macpower like this right after an if statement is plain
> wrong, second your comments violate all kernel rules.
>
> Second, you argue this was tested using code test - on which device? Did
> you test it on all rtl8xxxu based devices or just rtl8723bu?
>
> NACK
>
> Jes
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