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authorTejun Heo <tj@kernel.org>2009-03-03 13:52:16 +0900
committerJeff Garzik <jgarzik@redhat.com>2009-03-13 14:56:07 -0400
commite9c1670c2a14ef9cc20d86b24b829f3947aad34e (patch)
treec4c1b11f52d41f429afcd07bff673d85881557da /lib/kernel_lock.c
parente3e4385f6181f434c0d786998ad1d0eef4e21c9b (diff)
ata_piix: add workaround for Samsung DB-P70
Samsung DB-P70 somehow botched the first ICH9 SATA port. The board doesn't expose the first port but somehow SStatus reports link online while failing SRST protocol leading to repeated probe failures and thus long boot delay. Because the BIOS doesn't carry any identifying DMI information, the port can't be blacklisted safely. Fortunately, the controller does have subsystem vendor and ID set. It's unclear whether the subsystem IDs are used only for the board but it can be safely worked around by disabling SIDPR access and just using SRST works around the problem. Even when the workaround is triggered on an unaffected board the only side effect will be missing SCR access. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Joseph Jang <josephjang@gmail.com> Reported-by: Jonghyon Sohn <mrsohn@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'lib/kernel_lock.c')
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