diff options
| author | Libin Yang <libin.yang@amd.com> | 2009-11-04 14:55:18 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-11-17 16:46:33 -0800 |
| commit | a1f17a872bc7b1cb7efdd5486a2963e88a536e61 (patch) | |
| tree | bfade484195ed46294ff0fbaa5e938fd052b1a47 /drivers/usb/host/ohci-hcd.c | |
| parent | ac50e950784cae1c26ad9e09ebd8f8c706131eb3 (diff) | |
USB: ohci: quirk AMD prefetch for USB 1.1 ISO transfer
The following patch in the driver is required to avoid USB 1.1 device
failures that may occur due to requests from USB OHCI controllers may
be overwritten if the latency for any pending request by the USB
controller is very long (in the range of milliseconds).
Signed-off-by: Libin Yang <libin.yang@amd.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 78bb7710f36d..24eb74781919 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -87,6 +87,7 @@ static int ohci_restart (struct ohci_hcd *ohci); #ifdef CONFIG_PCI static void quirk_amd_pll(int state); static void amd_iso_dev_put(void); +static void sb800_prefetch(struct ohci_hcd *ohci, int on); #else static inline void quirk_amd_pll(int state) { @@ -96,6 +97,10 @@ static inline void amd_iso_dev_put(void) { return; } +static inline void sb800_prefetch(struct ohci_hcd *ohci, int on) +{ + return; +} #endif |