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[v2,13/79] media: s5p: fix pm_runtime_get_sync() usage count

Message ID f77d93e5129ea5663d7ebb1de12cc42abd7dc893.1619518193.git.mchehab+huawei@kernel.org (mailing list archive)
State Not Applicable
Headers show
Series Address some issues with PM runtime at media subsystem | expand

Commit Message

Mauro Carvalho Chehab April 27, 2021, 10:12 a.m. UTC
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

While here, check if the PM runtime error was caught at

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(-)
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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;