diff options
| author | Wu Zhangjin <wuzj@lemote.com> | 2010-01-04 11:33:02 +0800 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-13 11:01:28 -0500 |
| commit | c52a3a7c2bc1c7a07c57d54d63b4e27986dc77c1 (patch) | |
| tree | 1e828796832f49f5c74f7ed09886fa69a3f9a523 /drivers | |
| parent | 8dfb1887d2ea8dfdc2960a3d2efd2e26560d215f (diff) | |
USB: Fix the mouse problem when copying large amounts of data
When copying large amounts of data between the USB storage devices and
the hard disk, the USB mouse will not work, this patch fixes it.
[NOTE: This problem have been found in the Loongson family machines, not
sure whether it is producible on other platforms]
Signed-off-by: Hu Hongbing <huhb@lemote.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 235171f29460..0157357f5533 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -829,9 +829,13 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) } if (ints & OHCI_INTR_WDH) { - spin_lock (&ohci->lock); - dl_done_list (ohci); - spin_unlock (&ohci->lock); + if (ohci->hcca->done_head == 0) { + ints &= ~OHCI_INTR_WDH; + } else { + spin_lock (&ohci->lock); + dl_done_list (ohci); + spin_unlock (&ohci->lock); + } } if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) { |