[patch 02/47] b43: Do not return TX_BUSY from op_tx

Greg KH
2008-07-22T23:18:30Z

[-- Attachment #1: b43-do-not-return-tx_busy-from-op_tx.patch --]
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2.6.25-stable review patch. If anyone has any objections, please let us
know.

------------------
From: Michael Buesch <mb@bu3sch.de>

Never return TX_BUSY from op_tx. It doesn't make sense to return
TX_BUSY, if we can not transmit the packet.
Drop the packet and return TX_OK.
This will fix the resume hang.

Upstream commit is
66193a7cef2239bfd1b9b96e304770facf7a49c7

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/wireless/b43/main.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2607,7 +2607,7 @@ static int b43_op_tx(struct ieee80211_hw
int err;

if (unlikely(!dev))
- return NETDEV_TX_BUSY;
+ goto drop_packet;

/* Transmissions on seperate queues can run concurrently. */
read_lock_irqsave(&wl->tx_lock, flags);
@@ -2619,7 +2619,12 @@ static int b43_op_tx(struct ieee80211_hw
read_unlock_irqrestore(&wl->tx_lock, flags);

if (unlikely(err))
- return NETDEV_TX_BUSY;
+ goto drop_packet;
+ return NETDEV_TX_OK;
+
+drop_packet:
+ /* We can not transmit this packet. Drop it. */
+ dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}

--