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path: root/drivers/usb/host/ehci-pci.c
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Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
-rw-r--r--drivers/usb/host/ehci-pci.c24
1 files changed, 6 insertions, 18 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 854c2ec7b699..3e86bf4371b3 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -58,8 +58,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
- struct pci_dev *p_smbus;
- u8 rev;
u32 temp;
int retval;
@@ -175,22 +173,12 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
/* SB600 and old version of SB700 have a bug in EHCI controller,
* which causes usb devices lose response in some cases.
*/
- if ((pdev->device == 0x4386) || (pdev->device == 0x4396)) {
- p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
- PCI_DEVICE_ID_ATI_SBX00_SMBUS,
- NULL);
- if (!p_smbus)
- break;
- rev = p_smbus->revision;
- if ((pdev->device == 0x4386) || (rev == 0x3a)
- || (rev == 0x3b)) {
- u8 tmp;
- ehci_info(ehci, "applying AMD SB600/SB700 USB "
- "freeze workaround\n");
- pci_read_config_byte(pdev, 0x53, &tmp);
- pci_write_config_byte(pdev, 0x53, tmp | (1<<3));
- }
- pci_dev_put(p_smbus);
+ if ((pdev->device == 0x4386 || pdev->device == 0x4396) &&
+ usb_amd_hang_symptom_quirk()) {
+ u8 tmp;
+ ehci_info(ehci, "applying AMD SB600/SB700 USB freeze workaround\n");
+ pci_read_config_byte(pdev, 0x53, &tmp);
+ pci_write_config_byte(pdev, 0x53, tmp | (1<<3));
}
break;
case PCI_VENDOR_ID_NETMOS: