media/video: don't use flush_scheduled_work()

This patch converts the remaining users of flush_scheduled_work() in
media/video.

* bttv-input.c and cx23885-input.c don't use workqueue at all.  No
  need to flush.

* Make omap24xxcam.c and saa7134-empress.c flush the used work
  directly.

* In fd_defio.c, replace cancel_delayed_work() +
  flush_scheduled_work() with cancel_delayed_work_sync().  While at
  it, replace the deprecated cancel_rearming_delayed_work() with
  cancel_delayed_work_sync().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 5 insertions, 10 deletions

diff --git a/drivers/media/video/bt8xx/bttv-input.c b/drivers/media/video/bt8xx/bttv-input.c
index 6bf05a7dc5f9..1989f002898b 100644
--- a/drivers/media/video/bt8xx/bttv-input.c
+++ b/drivers/media/video/bt8xx/bttv-input.c
@@ -229,16 +229,13 @@ static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
 
 static void bttv_ir_stop(struct bttv *btv)
 {
-        if (btv->remote->polling) {
+        if (btv->remote->polling)
                 del_timer_sync(&btv->remote->timer);
-                flush_scheduled_work();
-        }
 
         if (btv->remote->rc5_gpio) {
                 u32 gpio;
 
                 del_timer_sync(&btv->remote->timer_end);
-                flush_scheduled_work();
 
                 gpio = bttv_gpio_read(&btv->c);
                 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
diff --git a/drivers/media/video/cx23885/cx23885-input.c b/drivers/media/video/cx23885/cx23885-input.c
index bb61870b8d6e..4a326fe0b01c 100644
--- a/drivers/media/video/cx23885/cx23885-input.c
+++ b/drivers/media/video/cx23885/cx23885-input.c
@@ -230,8 +230,6 @@ static void cx23885_input_ir_stop(struct cx23885_dev *dev)
                 v4l2_subdev_call(dev->sd_ir, ir, rx_s_parameters, &params);
                 v4l2_subdev_call(dev->sd_ir, ir, rx_g_parameters, &params);
         }
-
-        flush_scheduled_work();
 }
 
 static void cx23885_input_ir_close(void *priv)
diff --git a/drivers/media/video/omap24xxcam.c b/drivers/media/video/omap24xxcam.c
index 378b094aff16..017552762902 100644
--- a/drivers/media/video/omap24xxcam.c
+++ b/drivers/media/video/omap24xxcam.c
@@ -1198,7 +1198,7 @@ static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
 
         atomic_inc(&cam->reset_disable);
 
-        flush_scheduled_work();
+        flush_work_sync(&cam->sensor_reset_work);
 
         rval = videobuf_streamoff(q);
         if (!rval) {
@@ -1512,7 +1512,7 @@ static int omap24xxcam_release(struct file *file)
 
         atomic_inc(&cam->reset_disable);
 
-        flush_scheduled_work();
+        flush_work_sync(&cam->sensor_reset_work);
 
         /* stop streaming capture */
         videobuf_streamoff(&fh->vbq);
@@ -1536,7 +1536,7 @@ static int omap24xxcam_release(struct file *file)
          * not be scheduled anymore since streaming is already
          * disabled.)
          */
-        flush_scheduled_work();
+        flush_work_sync(&cam->sensor_reset_work);
 
         mutex_lock(&cam->mutex);
         if (atomic_dec_return(&cam->users) == 0) {
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index b890aafe7d64..6b8459c7728e 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -553,7 +553,7 @@ static int empress_fini(struct saa7134_dev *dev)
 
         if (NULL == dev->empress_dev)
                 return 0;
-        flush_scheduled_work();
+        flush_work_sync(&dev->empress_workqueue);
         video_unregister_device(dev->empress_dev);
         dev->empress_dev = NULL;
         return 0;