firewire: ohci: fix regression with Agere FW643 rev 06, disable MSI

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>
Cc: <stable@kernel.org> # 2.6.36.y

diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 5697cf20c924c7ce4d27d65c7b3070ba9a7a88d0..e3c8b60bd86be8873e781bef053f466898be16c2 100644 (file)
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -242,6 +242,7 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card)
 
 static char ohci_driver_name[] = KBUILD_MODNAME;
 
+#define PCI_DEVICE_ID_AGERE_FW643      0x5901
 #define PCI_DEVICE_ID_JMICRON_JMB38X_FW        0x2380
 #define PCI_DEVICE_ID_TI_TSB12LV22     0x8009
 
@@ -253,19 +254,34 @@ static char ohci_driver_name[] = KBUILD_MODNAME;
 
 /* In case of multiple matches in ohci_quirks[], only the first one is used. */
 static const struct {
-       unsigned short vendor, device, flags;
+       unsigned short vendor, device, revision, flags;
 } ohci_quirks[] = {
-       {PCI_VENDOR_ID_TI,      PCI_DEVICE_ID_TI_TSB12LV22, QUIRK_CYCLE_TIMER |
-                                                           QUIRK_RESET_PACKET |
-                                                           QUIRK_NO_1394A},
-       {PCI_VENDOR_ID_TI,      PCI_ANY_ID,     QUIRK_RESET_PACKET},
-       {PCI_VENDOR_ID_AL,      PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
-       {PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_FW, QUIRK_NO_MSI},
-       {PCI_VENDOR_ID_NEC,     PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
-       {PCI_VENDOR_ID_VIA,     PCI_ANY_ID,     QUIRK_CYCLE_TIMER |
-                                               QUIRK_NO_MSI},
-       {PCI_VENDOR_ID_RICOH,   PCI_ANY_ID,     QUIRK_CYCLE_TIMER},
-       {PCI_VENDOR_ID_APPLE,   PCI_DEVICE_ID_APPLE_UNI_N_FW, QUIRK_BE_HEADERS},
+       {PCI_VENDOR_ID_AL, PCI_ANY_ID, PCI_ANY_ID,
+               QUIRK_CYCLE_TIMER},
+
+       {PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_FW, PCI_ANY_ID,
+               QUIRK_BE_HEADERS},
+
+       {PCI_VENDOR_ID_ATT, PCI_DEVICE_ID_AGERE_FW643, 6,
+               QUIRK_NO_MSI},
+
+       {PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_FW, PCI_ANY_ID,
+               QUIRK_NO_MSI},
+
+       {PCI_VENDOR_ID_NEC, PCI_ANY_ID, PCI_ANY_ID,
+               QUIRK_CYCLE_TIMER},
+
+       {PCI_VENDOR_ID_RICOH, PCI_ANY_ID, PCI_ANY_ID,
+               QUIRK_CYCLE_TIMER},
+
+       {PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB12LV22, PCI_ANY_ID,
+               QUIRK_CYCLE_TIMER | QUIRK_RESET_PACKET | QUIRK_NO_1394A},
+
+       {PCI_VENDOR_ID_TI, PCI_ANY_ID, PCI_ANY_ID,
+               QUIRK_RESET_PACKET},
+
+       {PCI_VENDOR_ID_VIA, PCI_ANY_ID, PCI_ANY_ID,
+               QUIRK_CYCLE_TIMER | QUIRK_NO_MSI},
 };
 
 /* This overrides anything that was found in ohci_quirks[]. */
@@ -2928,9 +2944,11 @@ static int __devinit pci_probe(struct pci_dev *dev,
        }
 
        for (i = 0; i < ARRAY_SIZE(ohci_quirks); i++)
-               if (ohci_quirks[i].vendor == dev->vendor &&
-                   (ohci_quirks[i].device == dev->device ||
-                    ohci_quirks[i].device == (unsigned short)PCI_ANY_ID)) {
+               if ((ohci_quirks[i].vendor == dev->vendor) &&
+                   (ohci_quirks[i].device == (unsigned short)PCI_ANY_ID ||
+                    ohci_quirks[i].device == dev->device) &&
+                   (ohci_quirks[i].revision == (unsigned short)PCI_ANY_ID ||
+                    ohci_quirks[i].revision >= dev->revision)) {
                        ohci->quirks = ohci_quirks[i].flags;
                        break;
                }