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Date: Thu, 11 Jul 2013 17:05:58 +0800
From: Ming Lei <ming.lei@...onical.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org, Oliver Neukum <oliver@...kum.org>,
Alan Stern <stern@...land.harvard.edu>,
linux-input@...r.kernel.org, linux-bluetooth@...r.kernel.org,
netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
linux-media@...r.kernel.org, alsa-devel@...a-project.org,
Ming Lei <ming.lei@...onical.com>,
Mauro Carvalho Chehab <mchehab@...hat.com>,
Hans Verkuil <hans.verkuil@...co.com>
Subject: [PATCH 35/50] media: usb: cx231xx: spin_lock in complete() cleanup
Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
Cc: Mauro Carvalho Chehab <mchehab@...hat.com>
Cc: Hans Verkuil <hans.verkuil@...co.com>
Cc: linux-media@...r.kernel.org
Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
drivers/media/usb/cx231xx/cx231xx-audio.c | 6 ++++++
drivers/media/usb/cx231xx/cx231xx-core.c | 10 ++++++----
drivers/media/usb/cx231xx/cx231xx-vbi.c | 5 +++--
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-audio.c b/drivers/media/usb/cx231xx/cx231xx-audio.c
index 81a1d97..58c1b5c 100644
--- a/drivers/media/usb/cx231xx/cx231xx-audio.c
+++ b/drivers/media/usb/cx231xx/cx231xx-audio.c
@@ -136,6 +136,7 @@ static void cx231xx_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 +
@@ -158,6 +159,7 @@ static void cx231xx_audio_isocirq(struct urb *urb)
length * stride);
}
+ local_irq_save(flags);
snd_pcm_stream_lock(substream);
dev->adev.hwptr_done_capture += length;
@@ -174,6 +176,7 @@ static void cx231xx_audio_isocirq(struct urb *urb)
period_elapsed = 1;
}
snd_pcm_stream_unlock(substream);
+ local_irq_restore(flags);
}
if (period_elapsed)
snd_pcm_period_elapsed(substream);
@@ -224,6 +227,7 @@ static void cx231xx_audio_bulkirq(struct urb *urb)
stride = runtime->frame_bits >> 3;
if (1) {
+ unsigned long flags;
int length = urb->actual_length /
stride;
cp = (unsigned char *)urb->transfer_buffer;
@@ -242,6 +246,7 @@ static void cx231xx_audio_bulkirq(struct urb *urb)
length * stride);
}
+ local_irq_save(flags);
snd_pcm_stream_lock(substream);
dev->adev.hwptr_done_capture += length;
@@ -258,6 +263,7 @@ static void cx231xx_audio_bulkirq(struct urb *urb)
period_elapsed = 1;
}
snd_pcm_stream_unlock(substream);
+ local_irq_restore(flags);
}
if (period_elapsed)
snd_pcm_period_elapsed(substream);
diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c
index 4ba3ce0..593b397 100644
--- a/drivers/media/usb/cx231xx/cx231xx-core.c
+++ b/drivers/media/usb/cx231xx/cx231xx-core.c
@@ -798,6 +798,7 @@ static void cx231xx_isoc_irq_callback(struct urb *urb)
container_of(dma_q, struct cx231xx_video_mode, vidq);
struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
int i;
+ unsigned long flags;
switch (urb->status) {
case 0: /* success */
@@ -813,9 +814,9 @@ static void cx231xx_isoc_irq_callback(struct urb *urb)
}
/* Copy data from URB */
- spin_lock(&dev->video_mode.slock);
+ spin_lock_irqsave(&dev->video_mode.slock, flags);
dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
- spin_unlock(&dev->video_mode.slock);
+ spin_unlock_irqrestore(&dev->video_mode.slock, flags);
/* Reset urb buffers */
for (i = 0; i < urb->number_of_packets; i++) {
@@ -842,6 +843,7 @@ static void cx231xx_bulk_irq_callback(struct urb *urb)
struct cx231xx_video_mode *vmode =
container_of(dma_q, struct cx231xx_video_mode, vidq);
struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
+ unsigned long flags;
switch (urb->status) {
case 0: /* success */
@@ -857,9 +859,9 @@ static void cx231xx_bulk_irq_callback(struct urb *urb)
}
/* Copy data from URB */
- spin_lock(&dev->video_mode.slock);
+ spin_lock_irqsave(&dev->video_mode.slock, flags);
dev->video_mode.bulk_ctl.bulk_copy(dev, urb);
- spin_unlock(&dev->video_mode.slock);
+ spin_unlock_irqrestore(&dev->video_mode.slock, flags);
/* Reset urb buffers */
urb->status = usb_submit_urb(urb, GFP_ATOMIC);
diff --git a/drivers/media/usb/cx231xx/cx231xx-vbi.c b/drivers/media/usb/cx231xx/cx231xx-vbi.c
index c027942..38e78f8 100644
--- a/drivers/media/usb/cx231xx/cx231xx-vbi.c
+++ b/drivers/media/usb/cx231xx/cx231xx-vbi.c
@@ -306,6 +306,7 @@ static void cx231xx_irq_vbi_callback(struct urb *urb)
struct cx231xx_video_mode *vmode =
container_of(dma_q, struct cx231xx_video_mode, vidq);
struct cx231xx *dev = container_of(vmode, struct cx231xx, vbi_mode);
+ unsigned long flags;
switch (urb->status) {
case 0: /* success */
@@ -322,9 +323,9 @@ static void cx231xx_irq_vbi_callback(struct urb *urb)
}
/* Copy data from URB */
- spin_lock(&dev->vbi_mode.slock);
+ spin_lock_irqsave(&dev->vbi_mode.slock, flags);
dev->vbi_mode.bulk_ctl.bulk_copy(dev, urb);
- spin_unlock(&dev->vbi_mode.slock);
+ spin_unlock_irqrestore(&dev->vbi_mode.slock, flags);
/* Reset status */
urb->status = 0;
--
1.7.9.5
--
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