[media] s5p-mfc: call wake_up_dev if in suspend mode

If a frame is still decoding when system enters suspend mode, we wait
on the device queue for a interrupt condition. This sometimes leads to a
timeout because the device queue might not be woken up everytime.
Usually, the context queue gets woken up when that context's frame gets
decoded. This patch adds a condition to wake up the device queue along
with the context queue when the system is in suspend mode.
Since the device queue is now woken up, we don't have to check the
context's int_cond flag while waiting. Also, we can skip calling try_run
after waking up the device queue to ensure that we don't have to wait
for more than one frame to be processed.

Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Arun Mankuzhi <arun.m@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index 084263dd126f08bd235a46a7a54e3d855516050e..bec0f61c7b7c3ea59ecd673d8cc8773f36960b98 100644 (file)
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -404,7 +404,11 @@ leave_handle_frame:
        if (test_and_clear_bit(0, &dev->hw_lock) == 0)
                BUG();
        s5p_mfc_clock_off();
-       s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
+       /* if suspending, wake up device and do not try_run again*/
+       if (test_bit(0, &dev->enter_suspend))
+               wake_up_dev(dev, reason, err);
+       else
+               s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
 }
 
 /* Error handling for interrupt */
@@ -1286,9 +1290,7 @@ static int s5p_mfc_suspend(struct device *dev)
                /* Try and lock the HW */
                /* Wait on the interrupt waitqueue */
                ret = wait_event_interruptible_timeout(m_dev->queue,
-                       m_dev->int_cond || m_dev->ctx[m_dev->curr_ctx]->int_cond,
-                       msecs_to_jiffies(MFC_INT_TIMEOUT));
-
+                       m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT));
                if (ret == 0) {
                        mfc_err("Waiting for hardware to finish timed out\n");
                        return -EIO;