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linux-2.6.34-moorestown-fix-hw-qh-prefetch-bug....
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File linux-2.6.34-moorestown-fix-hw-qh-prefetch-bug.patch of Package kernel
From: Alek Du <alek.du@intel.com> Date: Mon, 19 Apr 2010 12:39:37 -0800 Subject: [PATCH] ehci: Only enable QH prefetch on Moorestown Patch-mainline: when mrst code is merged? Hardware QH prefetch feature is found to be buggy on some none-moorestown platforms. Disable this feature on other platforms at the moment. Signed-off-by: Alek Du <alek.du@intel.com> --- drivers/usb/host/ehci-hcd.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -595,7 +595,9 @@ static int ehci_init(struct usb_hcd *hcd } if (HCC_HW_PREFETCH(hcc_params)) { ehci_dbg(ehci, "HW prefetch capable %d\n", park); +#ifdef CONFIG_X86_MRST temp |= (CMD_ASPE | CMD_PSPE); +#endif } if (HCC_CANPARK(hcc_params)) {
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