From: Bob Copeland <me@bobcopeland.com>
Date: Sat, 10 Jan 2009 19:42:54 +0000 (-0500)
Subject: ath5k: fix bf->skb==NULL panic in ath5k_tasklet_rx
X-Git-Tag: v2.6.30-rc1~662^2~836^2~147
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6ea03562f04382776ad825624daefe27f5d3f9c;p=pandora-kernel.git

ath5k: fix bf->skb==NULL panic in ath5k_tasklet_rx

Under memory pressure, we may not be able to allocate a new skb for
new packets.  If the allocation fails, ath5k_tasklet_rx will exit but
will leave a buffer in the list with a NULL skb, eventually triggering
a BUG_ON.

Extract the skb allocation from ath5k_rxbuf_setup() and change the
tasklet to allocate the next skb before accepting a packet.

Changes-licensed-under: 3-Clause-BSD

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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