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Subject[char-misc-next 02/11] mei: request autosuspend at the end of write
Date
From: Alexander Usyskin <alexander.usyskin@intel.com>

On longer non-blocking write might not complete at the end of
autosuspend expiration, therefore we request autosuspend
again on the write completion.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/client.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index ce88c2199b2c..7a5a6636f0fd 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -1459,12 +1459,18 @@ err:
*/
void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb)
{
+ struct mei_device *dev = cl->dev;
+
switch (cb->fop_type) {
case MEI_FOP_WRITE:
mei_io_cb_free(cb);
cl->writing_state = MEI_WRITE_COMPLETE;
- if (waitqueue_active(&cl->tx_wait))
+ if (waitqueue_active(&cl->tx_wait)) {
wake_up_interruptible(&cl->tx_wait);
+ } else {
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_request_autosuspend(dev->dev);
+ }
break;

case MEI_FOP_READ:
--
2.1.0


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