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usb: ehci: use amd_chipset_type to filter for usb subsystem hang bug

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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>
This commit is contained in:
Huang Rui
2013-10-03 23:37:12 +08:00
committed by Greg Kroah-Hartman
parent cccd3a258e
commit 3ad145b62a
3 changed files with 20 additions and 18 deletions
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13
drivers/usb/host/pci-quirks.c
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@@ -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.