[PATCH] cx23885: restore flushes of cx23885_dev work items

[Tejun Heo]

Commit 8c71778c (media/video: don't use flush_scheduled_work())
dropped flush_scheduled_work() from cx23885_input_ir_stop()
incorrectly assuming that it didn't use any work item; however,
cx23885_dev makes use of three work items - cx25840_work and
ir_{r|t}x_work.

Make cx23885_input_ir_stop() sync flush all three work items before
returning.

Signed-off-by: Tejun Heo <t...@kernel.org>
Reported-by: Andy Walls <awa...@md.metrocast.net>
Reviewed-by: Andy Walls <awa...@md.metrocast.net>
Cc: Dmitry Torokhov <dmitry.torok...@gmail.com>
Cc: Mauro Carvalho Chehab <mche...@redhat.com>
---
 drivers/media/video/cx23885/cx23885-input.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/video/cx23885/cx23885-input.c 
b/drivers/media/video/cx23885/cx23885-input.c
index 199b996..e27cedb 100644
--- a/drivers/media/video/cx23885/cx23885-input.c
+++ b/drivers/media/video/cx23885/cx23885-input.c
@@ -229,6 +229,9 @@ 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_work_sync(&dev->cx25840_work);
+       flush_work_sync(&dev->ir_rx_work);
+       flush_work_sync(&dev->ir_tx_work);
 }
 
 static void cx23885_input_ir_close(struct rc_dev *rc)
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