On Sat 17 August 2013 18:25:03 Ming Lei wrote:
> Complete() will be run with interrupt enabled, so change to
> spin_lock_irqsave().
>
> Cc: Mauro Carvalho Chehab <mche...@redhat.com>
> Cc: linux-media@vger.kernel.org
> Reviewed-by: Devin Heitmueller <dheitmuel...@kernellabs.com>
> Tested-by: Devin Heitmueller <dheitmuel...@kernellabs.com>
> Signed-off-by: Ming Lei <ming....@canonical.com>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
Regards,
Hans
> ---
> drivers/media/usb/em28xx/em28xx-core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/em28xx/em28xx-core.c
> b/drivers/media/usb/em28xx/em28xx-core.c
> index fc157af..0d698f9 100644
> --- a/drivers/media/usb/em28xx/em28xx-core.c
> +++ b/drivers/media/usb/em28xx/em28xx-core.c
> @@ -941,6 +941,7 @@ static void em28xx_irq_callback(struct urb *urb)
> {
> struct em28xx *dev = urb->context;
> int i;
> + unsigned long flags;
>
> switch (urb->status) {
> case 0: /* success */
> @@ -956,9 +957,9 @@ static void em28xx_irq_callback(struct urb *urb)
> }
>
> /* Copy data from URB */
> - spin_lock(&dev->slock);
> + spin_lock_irqsave(&dev->slock, flags);
> dev->usb_ctl.urb_data_copy(dev, urb);
> - spin_unlock(&dev->slock);
> + spin_unlock_irqrestore(&dev->slock, flags);
>
> /* Reset urb buffers */
> for (i = 0; i < urb->number_of_packets; i++) {
>
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