On Sat 17 August 2013 18:25:05 Ming Lei wrote:
> Complete() will be run with interrupt enabled, so change to
> spin_lock_irqsave().
>
> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> Cc: linux-media@xxxxxxxxxxxxxxx
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Regards,
Hans
> ---
> drivers/media/usb/tlg2300/pd-alsa.c | 5 +++--
> drivers/media/usb/tlg2300/pd-video.c | 5 +++--
> 2 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/usb/tlg2300/pd-alsa.c b/drivers/media/usb/tlg2300/pd-alsa.c
> index 3f3e141..65c46a2 100644
> --- a/drivers/media/usb/tlg2300/pd-alsa.c
> +++ b/drivers/media/usb/tlg2300/pd-alsa.c
> @@ -141,6 +141,7 @@ static inline void handle_audio_data(struct urb *urb, int *period_elapsed)
> int len = urb->actual_length / stride;
> unsigned char *cp = urb->transfer_buffer;
> unsigned int oldptr = pa->rcv_position;
> + unsigned long flags;
>
> if (urb->actual_length == AUDIO_BUF_SIZE - 4)
> len -= (AUDIO_TRAILER_SIZE / stride);
> @@ -156,7 +157,7 @@ static inline void handle_audio_data(struct urb *urb, int *period_elapsed)
> memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
>
> /* update the statas */
> - snd_pcm_stream_lock(pa->capture_pcm_substream);
> + snd_pcm_stream_lock_irqsave(pa->capture_pcm_substream, flags);
> pa->rcv_position += len;
> if (pa->rcv_position >= runtime->buffer_size)
> pa->rcv_position -= runtime->buffer_size;
> @@ -166,7 +167,7 @@ static inline void handle_audio_data(struct urb *urb, int *period_elapsed)
> pa->copied_position -= runtime->period_size;
> *period_elapsed = 1;
> }
> - snd_pcm_stream_unlock(pa->capture_pcm_substream);
> + snd_pcm_stream_unlock_irqrestore(pa->capture_pcm_substream, flags);
> }
>
> static void complete_handler_audio(struct urb *urb)
> diff --git a/drivers/media/usb/tlg2300/pd-video.c b/drivers/media/usb/tlg2300/pd-video.c
> index 8df668d..4e5bd07 100644
> --- a/drivers/media/usb/tlg2300/pd-video.c
> +++ b/drivers/media/usb/tlg2300/pd-video.c
> @@ -151,11 +151,12 @@ static void init_copy(struct video_data *video, bool index)
> static bool get_frame(struct front_face *front, int *need_init)
> {
> struct videobuf_buffer *vb = front->curr_frame;
> + unsigned long flags;
>
> if (vb)
> return true;
>
> - spin_lock(&front->queue_lock);
> + spin_lock_irqsave(&front->queue_lock, flags);
> if (!list_empty(&front->active)) {
> vb = list_entry(front->active.next,
> struct videobuf_buffer, queue);
> @@ -164,7 +165,7 @@ static bool get_frame(struct front_face *front, int *need_init)
> front->curr_frame = vb;
> list_del_init(&vb->queue);
> }
> - spin_unlock(&front->queue_lock);
> + spin_unlock_irqrestore(&front->queue_lock, flags);
>
> return !!vb;
> }
>
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