diff options
| author | Oliver Neukum <oliver@neukum.org> | 2009-11-27 15:17:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-11-30 16:43:16 -0800 |
| commit | ee4ecb8ac63a5792bec448037d4b82ec4144f94b (patch) | |
| tree | b272d4c5bcfe8ef8e7c94b6182fa2b3ed024b745 /drivers/usb/host/ehci-pci.c | |
| parent | 8d6499e5bde91ad05dea4f666bdfe79e65e7cf96 (diff) | |
USB: work around for EHCI with quirky periodic schedules
a quirky chipset needs periodic schedules to run for a minimum
time before they can be disabled again. This enforces the requirement
with a time stamp and a calculated delay
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
| -rw-r--r-- | drivers/usb/host/ehci-pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 378861b9d79a..ead5f4f2aa5a 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -111,6 +111,10 @@ static int ehci_pci_setup(struct usb_hcd *hcd) switch (pdev->vendor) { case PCI_VENDOR_ID_INTEL: ehci->need_io_watchdog = 0; + if (pdev->device == 0x27cc) { + ehci->broken_periodic = 1; + ehci_info(ehci, "using broken periodic workaround\n"); + } break; case PCI_VENDOR_ID_TDI: if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { |