Re: [PATCH 42/50] media: usb: tlg2300: spin_lock in complete() cleanup
From: Sergei Shtylyov <hidden>
Date: 2013-07-11 13:13:37
Also in:
alsa-devel, linux-input, linux-media, linux-wireless
On 11-07-2013 13:06, Ming Lei wrote:
Subject doesn't match the patch.
Complete() will be run with interrupt enabled, so disable local interrupt before holding a global lock which is held without irqsave. Cc: Mauro Carvalho Chehab <redacted> Cc: linux-media@vger.kernel.org Signed-off-by: Ming Lei <redacted> --- drivers/media/usb/tlg2300/pd-alsa.c | 3 +++ 1 file changed, 3 insertions(+)
quoted hunk ↗ jump to hunk
diff --git a/drivers/media/usb/tlg2300/pd-alsa.c b/drivers/media/usb/tlg2300/pd-alsa.c index 3f3e141..cbccc96 100644 --- a/drivers/media/usb/tlg2300/pd-alsa.c +++ b/drivers/media/usb/tlg2300/pd-alsa.c
[...]
quoted hunk ↗ jump to hunk
@@ -156,6 +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 */ + local_irq_save(flags); snd_pcm_stream_lock(pa->capture_pcm_substream); pa->rcv_position += len; if (pa->rcv_position >= runtime->buffer_size)@@ -167,6 +169,7 @@ static inline void handle_audio_data(struct urb *urb, int *period_elapsed) *period_elapsed = 1; } snd_pcm_stream_unlock(pa->capture_pcm_substream); + local_irq_restore(flags); }
WBR, Sergei