diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-11-23 10:52:33 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-23 10:52:33 +0100 |
| commit | 9f1441644213e5f6faa150206399fe511eba2eb6 (patch) | |
| tree | e59d4e6475aa84f7e821a8c607deb56b85e19e95 /drivers/usb/host/ehci-pci.c | |
| parent | 3ff68a6a106c362a6811d3e51bced58e6fc87de7 (diff) | |
| parent | 13d428afc007fcfcd6deeb215618f54cf9c0cae6 (diff) | |
Merge commit 'v2.6.28-rc6' into irq/urgent
Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
| -rw-r--r-- | drivers/usb/host/ehci-pci.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index c46a58f9181..9d0ea573aef 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -66,6 +66,8 @@ 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; @@ -166,6 +168,25 @@ static int ehci_pci_setup(struct usb_hcd *hcd) pci_write_config_byte(pdev, 0x4b, tmp | 0x20); } break; + case PCI_VENDOR_ID_ATI: + /* SB700 old version has a bug in EHCI controller, + * which causes usb devices lose response in some cases. + */ + if (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 ((rev == 0x3a) || (rev == 0x3b)) { + u8 tmp; + pci_read_config_byte(pdev, 0x53, &tmp); + pci_write_config_byte(pdev, 0x53, tmp | (1<<3)); + } + pci_dev_put(p_smbus); + } + break; } ehci_reset(ehci); |