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Subject[PATCH v3 13/79] media: s5p: fix pm_runtime_get_sync() usage count
Date
The pm_runtime_get_sync() internally increments the
dev->power.usage_count without decrementing it, even on errors.
Replace it by the new pm_runtime_resume_and_get(), introduced by:
commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
in order to properly decrement the usage counter and avoid memory
leaks.

While here, check if the PM runtime error was caught at
s5p_cec_adap_enable().

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
drivers/media/cec/platform/s5p/s5p_cec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/cec/platform/s5p/s5p_cec.c b/drivers/media/cec/platform/s5p/s5p_cec.c
index 2a3e7ffefe0a..2250c1cbc64e 100644
--- a/drivers/media/cec/platform/s5p/s5p_cec.c
+++ b/drivers/media/cec/platform/s5p/s5p_cec.c
@@ -35,10 +35,13 @@ MODULE_PARM_DESC(debug, "debug level (0-2)");

static int s5p_cec_adap_enable(struct cec_adapter *adap, bool enable)
{
+ int ret;
struct s5p_cec_dev *cec = cec_get_drvdata(adap);

if (enable) {
- pm_runtime_get_sync(cec->dev);
+ ret = pm_runtime_resume_and_get(cec->dev);
+ if (ret < 0)
+ return ret;

s5p_cec_reset(cec);

--
2.30.2
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