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| author | Huang Rui <ray.huang@amd.com> | 2013-10-03 23:37:12 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-03 15:44:50 -0700 |
| commit | 3ad145b62a15c86150dd0cc229a39a3120d462f9 (patch) | |
| tree | 2b0a5f63b7dd1cf5269dde34406861ebd5e8526c /drivers/usb/host/pci-quirks.c | |
| parent | cccd3a258eef7a8451e25b7bf55503973de4e9f5 (diff) | |
| download | op-kernel-dev-3ad145b62a15c86150dd0cc229a39a3120d462f9.zip op-kernel-dev-3ad145b62a15c86150dd0cc229a39a3120d462f9.tar.gz | |
usb: ehci: use amd_chipset_type to filter for usb subsystem hang bug
Commit "usb: pci-quirks: refactor AMD quirk to abstract AMD chipset types"
introduced a new AMD chipset type to filter AMD platforms with different
chipsets.
According to a recent thread [1], this patch updates USB subsystem hang
symptom quirk which is observed on AMD all SB600 and SB700 revision
0x3a/0x3b. And make it use the new chipset type to represent.
[1] http://marc.info/?l=linux-usb&m=138012321616452&w=2
Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 9eec463..138a555 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -262,6 +262,19 @@ int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev) } EXPORT_SYMBOL_GPL(usb_hcd_amd_remote_wakeup_quirk); +bool usb_amd_hang_symptom_quirk(void) +{ + u8 rev; + + usb_amd_find_chipset_info(); + rev = amd_chipset.sb_type.rev; + /* SB600 and old version of SB700 have hang symptom bug */ + return amd_chipset.sb_type.gen == AMD_CHIPSET_SB600 || + (amd_chipset.sb_type.gen == AMD_CHIPSET_SB700 && + rev >= 0x3a && rev <= 0x3b); +} +EXPORT_SYMBOL_GPL(usb_amd_hang_symptom_quirk); + /* * The hardware normally enables the A-link power management feature, which * lets the system lower the power consumption in idle states. |
