[PATCH 1/4] staging: vt6655: check ieee80211_bss_conf bssid not NULL

[PATCH 1/4] staging: vt6655: check ieee80211_bss_conf bssid not NULL

[Malcolm Priestley]

Sometimes bssid can go null on failed association.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org> # v3.19+
---
 drivers/staging/vt6655/device_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index ed040fb..b0c8e23 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1418,7 +1418,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 
 	priv->current_aid = conf->aid;
 
-	if (changed & BSS_CHANGED_BSSID) {
+	if (changed & BSS_CHANGED_BSSID && conf->bssid) {
 		unsigned long flags;
 
 		spin_lock_irqsave(&priv->lock, flags);
-- 
2.1.4

[PATCH 2/4 v2] staging: vt6655: Fix missing power saving support

[Malcolm Priestley]

Add IEEE80211_HW_SUPPORTS_PS to ieee80211_hw flags
enabling this feature.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>

---
v2 rebased for 4.2

 drivers/staging/vt6655/device_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index b0c8e23..e78bd5e 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1811,6 +1811,7 @@ vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
 	ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 	ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 	ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
+	ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 
 	priv->hw->max_signal = 100;
 
-- 
2.1.4

Re: [PATCH 2/4 v2] staging: vt6655: Fix missing power saving support

[Greg KH]

On Thu, Jul 09, 2015 at 05:01:25PM +0100, Malcolm Priestley wrote:
> Add IEEE80211_HW_SUPPORTS_PS to ieee80211_hw flags
> enabling this feature.
> 
> Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
> 
> ---
> v2 rebased for 4.2

Ah, nevermind, you did this already, now applied.

Sorry for the noise,

greg k-h

[PATCH 3/4] staging: vt6655: vnt_tx_packet don't wakeup from power saving.

[Malcolm Priestley]

mac80211 changes the wake state before attempting to tx data

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
---
 drivers/staging/vt6655/device_main.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index e78bd5e..c245dea 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1211,9 +1211,6 @@ static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
 
 	vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
 
-	if (MACbIsRegBitsOn(priv->PortOffset, MAC_REG_PSCTL, PSCTL_PS))
-		MACbPSWakeup(priv->PortOffset);
-
 	spin_lock_irqsave(&priv->lock, flags);
 
 	priv->bPWBitOn = false;
-- 
2.1.4

[PATCH 4/4] staging: vt6655: Correct listen interval TBTT wake up

[Malcolm Priestley]

PSbIsNextTBTTWakeUp is called at beacon intervals.

The should listen to next beacon on count down of wake_up_count == 1.

This restores this back to vendors code but modified for mac80211.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
---
 drivers/staging/vt6655/device.h |  1 +
 drivers/staging/vt6655/power.c  | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/vt6655/device.h b/drivers/staging/vt6655/device.h
index 5cf1b33..6aebb49 100644
--- a/drivers/staging/vt6655/device.h
+++ b/drivers/staging/vt6655/device.h
@@ -403,6 +403,7 @@ struct vnt_private {
 	unsigned char abyEEPROM[EEP_MAX_CONTEXT_SIZE]; /* unsigned long alignment */
 
 	unsigned short wBeaconInterval;
+	u16 wake_up_count;
 
 	struct work_struct interrupt_work;
 
diff --git a/drivers/staging/vt6655/power.c b/drivers/staging/vt6655/power.c
index be3c4e9..06e6b9d 100644
--- a/drivers/staging/vt6655/power.c
+++ b/drivers/staging/vt6655/power.c
@@ -157,10 +157,18 @@ PSbIsNextTBTTWakeUp(
 	struct ieee80211_conf *conf = &hw->conf;
 	bool bWakeUp = false;
 
-	if (conf->listen_interval == 1) {
-		/* Turn on wake up to listen next beacon */
-		MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN);
-		bWakeUp = true;
+	if (conf->listen_interval > 1) {
+		if (!pDevice->wake_up_count)
+			pDevice->wake_up_count = conf->listen_interval;
+
+		--pDevice->wake_up_count;
+
+		if (pDevice->wake_up_count == 1) {
+			/* Turn on wake up to listen next beacon */
+			MACvRegBitsOn(pDevice->PortOffset,
+				      MAC_REG_PSCTL, PSCTL_LNBCN);
+			bWakeUp = true;
+		}
 	}
 
 	return bWakeUp;
-- 
2.1.4