* [PATCH AUTOSEL 4.4 07/16] ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd()
[not found] <20210524145130.2499829-1-sashal@kernel.org>
@ 2021-05-24 14:51 ` Sasha Levin
2021-05-31 20:47 ` Pavel Machek
2021-05-24 14:51 ` [PATCH AUTOSEL 4.4 08/16] libertas: register sysfs groups properly Sasha Levin
1 sibling, 1 reply; 4+ messages in thread
From: Sasha Levin @ 2021-05-24 14:51 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Anirudh Rayabharam, Kangjie Lu, Kalle Valo, Sasha Levin,
linux-wireless, netdev
From: Anirudh Rayabharam <mail@anirudhrb.com>
[ Upstream commit fc6a6521556c8250e356ddc6a3f2391aa62dc976 ]
ath6kl_wmi_cmd_send could fail, so let's return its error code upstream.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath6kl/debug.c | 5 ++++-
drivers/net/wireless/ath/ath6kl/wmi.c | 4 +---
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index e2b7809d7886..f3a786af7ece 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -1027,14 +1027,17 @@ static ssize_t ath6kl_lrssi_roam_write(struct file *file,
{
struct ath6kl *ar = file->private_data;
unsigned long lrssi_roam_threshold;
+ int ret;
if (kstrtoul_from_user(user_buf, count, 0, &lrssi_roam_threshold))
return -EINVAL;
ar->lrssi_roam_threshold = lrssi_roam_threshold;
- ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
+ ret = ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
+ if (ret)
+ return ret;
return count;
}
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index 7e1010475cfb..4aead53acf38 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -776,10 +776,8 @@ int ath6kl_wmi_set_roam_lrssi_cmd(struct wmi *wmi, u8 lrssi)
cmd->info.params.roam_rssi_floor = DEF_LRSSI_ROAM_FLOOR;
cmd->roam_ctrl = WMI_SET_LRSSI_SCAN_PARAMS;
- ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_ROAM_CTRL_CMDID,
+ return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_ROAM_CTRL_CMDID,
NO_SYNC_WMIFLAG);
-
- return 0;
}
int ath6kl_wmi_force_roam_cmd(struct wmi *wmi, const u8 *bssid)
--
2.30.2
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 4.4 08/16] libertas: register sysfs groups properly
[not found] <20210524145130.2499829-1-sashal@kernel.org>
2021-05-24 14:51 ` [PATCH AUTOSEL 4.4 07/16] ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd() Sasha Levin
@ 2021-05-24 14:51 ` Sasha Levin
1 sibling, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2021-05-24 14:51 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Greg Kroah-Hartman, Kalle Valo, Sasha Levin, linux-wireless,
netdev
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 7e79b38fe9a403b065ac5915465f620a8fb3de84 ]
The libertas driver was trying to register sysfs groups "by hand" which
causes them to be created _after_ the device is initialized and
announced to userspace, which causes races and can prevent userspace
tools from seeing the sysfs files correctly.
Fix this up by using the built-in sysfs_groups pointers in struct
net_device which were created for this very reason, fixing the race
condition, and properly allowing for any error that might have occured
to be handled properly.
Cc: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-54-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/libertas/mesh.c | 28 ++++------------------------
1 file changed, 4 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/libertas/mesh.c b/drivers/net/wireless/libertas/mesh.c
index d0c881dd5846..f1e9cbcfdc16 100644
--- a/drivers/net/wireless/libertas/mesh.c
+++ b/drivers/net/wireless/libertas/mesh.c
@@ -797,19 +797,6 @@ static const struct attribute_group mesh_ie_group = {
.attrs = mesh_ie_attrs,
};
-static void lbs_persist_config_init(struct net_device *dev)
-{
- int ret;
- ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
- ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
-}
-
-static void lbs_persist_config_remove(struct net_device *dev)
-{
- sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
- sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
-}
-
/***************************************************************************
* Initializing and starting, stopping mesh
@@ -1021,6 +1008,10 @@ static int lbs_add_mesh(struct lbs_private *priv)
SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
+ mesh_dev->sysfs_groups[0] = &lbs_mesh_attr_group;
+ mesh_dev->sysfs_groups[1] = &boot_opts_group;
+ mesh_dev->sysfs_groups[2] = &mesh_ie_group;
+
/* Register virtual mesh interface */
ret = register_netdev(mesh_dev);
if (ret) {
@@ -1028,19 +1019,10 @@ static int lbs_add_mesh(struct lbs_private *priv)
goto err_free_netdev;
}
- ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
- if (ret)
- goto err_unregister;
-
- lbs_persist_config_init(mesh_dev);
-
/* Everything successful */
ret = 0;
goto done;
-err_unregister:
- unregister_netdev(mesh_dev);
-
err_free_netdev:
free_netdev(mesh_dev);
@@ -1063,8 +1045,6 @@ void lbs_remove_mesh(struct lbs_private *priv)
lbs_deb_enter(LBS_DEB_MESH);
netif_stop_queue(mesh_dev);
netif_carrier_off(mesh_dev);
- sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
- lbs_persist_config_remove(mesh_dev);
unregister_netdev(mesh_dev);
priv->mesh_dev = NULL;
kfree(mesh_dev->ieee80211_ptr);
--
2.30.2
^ permalink raw reply related [flat|nested] 4+ messages in thread