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authorClemens Ladisch <clemens@ladisch.de>2010-03-17 11:07:55 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2010-03-17 23:24:42 +0100
commit8301b91ba0b2d15c86fdf5357efe7c04eb767a6e (patch)
tree618f6ef4d1b4a35bba74af004a0aabdde4f315e2 /drivers/firewire
parentcf36df6bfb49fd265a39f676bfc9718029fef160 (diff)
downloadop-kernel-dev-8301b91ba0b2d15c86fdf5357efe7c04eb767a6e.zip
op-kernel-dev-8301b91ba0b2d15c86fdf5357efe7c04eb767a6e.tar.gz
firewire: ohci: add cycle timer quirk for the TI TSB12LV22
Among the many entries in the TSB12LV22 errata list (TI literature number SLLS312) is the following: PCI Slave reads of the Cycle Timer register may occasionally get an incorrect value. Software may be able to validate value by reading the register multiple times rapidly and evaluating for a reasonable difference. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> (untested) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added #define)
Diffstat (limited to 'drivers/firewire')
-rw-r--r--drivers/firewire/ohci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 75dc698..e33917b 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -231,6 +231,8 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card)
static char ohci_driver_name[] = KBUILD_MODNAME;
+#define PCI_DEVICE_ID_TI_TSB12LV22 0x8009
+
#define QUIRK_CYCLE_TIMER 1
#define QUIRK_RESET_PACKET 2
#define QUIRK_BE_HEADERS 4
@@ -239,6 +241,8 @@ static char ohci_driver_name[] = KBUILD_MODNAME;
static const struct {
unsigned short vendor, device, flags;
} ohci_quirks[] = {
+ {PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB12LV22, QUIRK_CYCLE_TIMER |
+ QUIRK_RESET_PACKET},
{PCI_VENDOR_ID_TI, PCI_ANY_ID, QUIRK_RESET_PACKET},
{PCI_VENDOR_ID_AL, PCI_ANY_ID, QUIRK_CYCLE_TIMER},
{PCI_VENDOR_ID_NEC, PCI_ANY_ID, QUIRK_CYCLE_TIMER},
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