media: sti/bdisp: fix pm_runtime_get_sync() usage count

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The pm_runtime_get_sync() internally increments the
dev->power.usage_count without decrementing it, even on errors.

The bdisp_start_streaming() doesn't take it into account, which
would unbalance PM usage counter at bdisp_stop_streaming().

The logic at bdisp_probe() is correct, but the best is to use
the same call along the driver.

So, replace it by the new pm_runtime_resume_and_get(), introduced by:
commit dd8088d5a8 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
in order to properly decrement the usage counter, avoiding
a potential PM usage counter leak.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

...

This commit is contained in:

Mauro Carvalho Chehab 2021-04-23 17:19:21 +02:00

parent 9c298f82d8

commit c44eac5b72

1 changed files with 4 additions and 3 deletions

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drivers/media/platform/sti/bdisp/bdisp-v4l2.c

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