Complete() will be run with interrupt enabled, so add local_irq_save()
before acquiring the lock without irqsave().
Cc: Mauro Carvalho Chehab <mche...@redhat.com>
Cc: linux-me...@vger.kernel.org
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/media/usb/em28xx/em28xx-audio.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/em28xx/em28xx-audio.c
b/drivers/media/usb/em28xx/em28xx-audio.c
index 2fdb66e..7fd1b2a 100644
--- a/drivers/media/usb/em28xx/em28xx-audio.c
+++ b/drivers/media/usb/em28xx/em28xx-audio.c
@@ -113,6 +113,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
stride = runtime->frame_bits >> 3;
for (i = 0; i < urb->number_of_packets; i++) {
+ unsigned long flags;
int length =
urb->iso_frame_desc[i].actual_length / stride;
cp = (unsigned char *)urb->transfer_buffer +
@@ -134,7 +135,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
length * stride);
}
- snd_pcm_stream_lock(substream);
+ snd_pcm_stream_lock_irqsave(substream, flags);
dev->adev.hwptr_done_capture += length;
if (dev->adev.hwptr_done_capture >=
@@ -150,7 +151,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
period_elapsed = 1;
}
- snd_pcm_stream_unlock(substream);
+ snd_pcm_stream_unlock_irqrestore(substream, flags);
}
if (period_elapsed)
snd_pcm_period_elapsed(substream);
--
1.7.9.5
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