From: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Date: Mon, 7 Feb 2011 16:07:11 +0000 (+0100)
Subject: mtd: fix race in cfi_cmdset_0001 driver
X-Git-Tag: v2.6.37.5~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73b700aa0682ebfbe9be1ffd759ff457b1ae79d0;p=pandora-kernel.git

mtd: fix race in cfi_cmdset_0001 driver

commit ecf3fde07c8dcb92a1bf3fbdfe70905d85cd00e1 upstream.

As inval_cache_and_wait_for_operation() drop and reclaim the lock
to invalidate the cache, some other thread may suspend the operation
before reaching the for(;;) loop. Therefore the loop must start with
checking the chip->state before reading status from the chip.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Michael Cashwell <mboards@prograde.net>
Acked-by: Stefan Bigler <stefan.bigler@keymile.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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