From: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Tue, 10 Jun 2008 15:20:53 +0000 (-0500)
Subject: [SCSI] sr: fix corrupt CD data after media change and delay
X-Git-Tag: v2.6.26-rc7~17^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1daeabf0da5bfa1943272ce508e2ba785730bf0;p=pandora-kernel.git

[SCSI] sr: fix corrupt CD data after media change and delay

Reported-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>

If you delay 30s or more before mounting a CD after inserting it then
the kernel has the wrong value for the CD size.

http://marc.info/?t=121276133000001

The problem is in sr_test_unit_ready(): the function eats unit
attentions without adjusting the sdev->changed status.  This means
that when the CD signals changed media via unit attention, we can
ignore it.  Fix by making sr_test_unit_ready() adjust the changed
status.

Tested-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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