From: Bob Copeland <me@bobcopeland.com>
Date: Wed, 15 Apr 2009 11:57:36 +0000 (-0400)
Subject: ath5k: manipulate rxlink and descriptor address under rxbuf lock
X-Git-Tag: v2.6.31-rc1~330^2~568^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26925042b6b105995ee54c6015e95f0caf9632d6;p=pandora-kernel.git

ath5k: manipulate rxlink and descriptor address under rxbuf lock

Grabbing an ath5k_buf then dropping the lock is racy because the
referenced descriptor can be obtained in another thread and released
before the buffer is handed to the hardware.  Likewise, manipulating
sc->rxlink without the lock can lead to having multiple self-linked
hardware descriptors.

Changes-licensed-under: 3-Clause-BSD

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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