From: Linus Torvalds <torvalds@woody.linux-foundation.org>
Date: Mon, 15 Oct 2007 19:46:16 +0000 (-0700)
Subject: scsi/gdth: fix crash in gdth_timeout if no gdth controllers found
X-Git-Tag: v2.6.24-rc1~1284
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c596cc46ba1c5769866efe586daff3422bc31afe;p=pandora-kernel.git

scsi/gdth: fix crash in gdth_timeout if no gdth controllers found

If the gdth module is loaded (or compiled in), the gdth_timeout function
gets started even if no actual gdth controllers are found b the probing.

That ends up not only being unnecessary, but also causes a crash due to
the function blindly just trying to pick the first entry off the
"gdth_instances" list, and accessing it - which obviously doesn't work
if the list is empty!

Noticed by Ingo Molnar.

Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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