diff options
| author | David Vrabel <david.vrabel@csr.com> | 2008-11-25 13:52:56 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-11-25 13:52:56 +0000 |
| commit | 65d76f368295973a35d195c9b13053502a67b6bc (patch) | |
| tree | fa7d9204b2da01a9c53633dda789380cfcad38c6 /drivers/usb/host | |
| parent | dba0a918722ee0f0ba3442575e4448c3ab622be4 (diff) | |
| parent | ed313489badef16d700f5a3be50e8fd8f8294bc8 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream
Diffstat (limited to 'drivers/usb/host')
| -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); |