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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2010-12-06 09:36:17 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-12-06 09:36:17 +0100 |
| commit | 0e44e059588e1d91f3a1974d2ce3348864d1d799 (patch) | |
| tree | 1161c2508bd9eeab010ebc40ef87860fd85a35fd /drivers/usb/host/ehci-pci.c | |
| parent | 96886c4361f1ae3f6c775d7c9295e2d557101d0f (diff) | |
| parent | e8a7e48bb248a1196484d3f8afa53bded2b24e71 (diff) | |
| download | talos-op-linux-0e44e059588e1d91f3a1974d2ce3348864d1d799.tar.gz talos-op-linux-0e44e059588e1d91f3a1974d2ce3348864d1d799.zip | |
Merge commit 'v2.6.37-rc4' into imx-for-2.6.38
Done to resolve merge conflict:
Conflicts:
arch/arm/mach-mx25/devices-imx25.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
| -rw-r--r-- | drivers/usb/host/ehci-pci.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index a1e8d273103f..01bb72b71832 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -103,6 +103,19 @@ static int ehci_pci_setup(struct usb_hcd *hcd) if (retval) return retval; + if ((pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x7808) || + (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x4396)) { + /* EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may + * read/write memory space which does not belong to it when + * there is NULL pointer with T-bit set to 1 in the frame list + * table. To avoid the issue, the frame list link pointer + * should always contain a valid pointer to a inactive qh. + */ + ehci->use_dummy_qh = 1; + ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI " + "dummy qh workaround\n"); + } + /* data structure init */ retval = ehci_init(hcd); if (retval) |
