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firewire: ohci: disable MSI on Ricoh controllers
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The PCIe device

    FireWire (IEEE 1394) [0c00]: Ricoh Co Ltd FireWire Host Controller
    [1180:e832] (prog-if 10 [OHCI])

is unable to access attached FireWire devices when MSI is enabled but
works if MSI is disabled.
http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg28251.html

Hence add the "disable MSI" quirks flag for this device, or in fact for
safety and simplicity for all current (R5U230, R5U231, R5U240) and
future Ricoh PCIe 1394 controllers.

Reported-by: Stefan Thomas <kontrapunktstefan@googlemail.com>
Cc: 2.6.36+ <stable@vger.kernel.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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Stefan Richter committed Jan 30, 2012
1 parent d1bb399 commit 320cfa6
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion drivers/firewire/ohci.c
Original file line number Diff line number Diff line change
Expand Up @@ -303,7 +303,7 @@ static const struct {
QUIRK_NO_MSI},

{PCI_VENDOR_ID_RICOH, PCI_ANY_ID, PCI_ANY_ID,
QUIRK_CYCLE_TIMER},
QUIRK_CYCLE_TIMER | QUIRK_NO_MSI},

{PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB12LV22, PCI_ANY_ID,
QUIRK_CYCLE_TIMER | QUIRK_RESET_PACKET | QUIRK_NO_1394A},
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