firewire: ohci: fix regression with Agere FW643 rev 06, disable MSI
authorStefan Richter <stefanr@s5r6.in-berlin.de>
Tue, 7 Dec 2010 19:32:40 +0000 (20:32 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 7 Jan 2011 21:58:15 +0000 (13:58 -0800)
commitb7467cd37498e1698fd67d94bd7fcc4c41d38d80
tree3dd6a0b87149555d3aecb02a47d5c2e3c7016975
parentdf957d477e0b93d1a1f8e87f494af2d9cd5e0bdb
firewire: ohci: fix regression with Agere FW643 rev 06, disable MSI

commit 9993e0fe0f5f29c69e79efcb271ffc9843002985 upstream.

Agere FW643 rev 06, listed as "11c1:5901 (rev 06) (prog-if 10 [OHCI])",
produced SBP-2 I/O errors since kernel 2.6.36.  Disabling MSI fixes it.

Since MSI work on Agere FW643-E (same vendor and device ID, but rev 07),
introduce a device revision field into firewire-ohci's quirks list so
that different quirks can be defined for older and newer revisions.

Reported-by: Jonathan Isom <jeisom@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/firewire/ohci.c