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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-04-23 17:04:23 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-05-10 11:36:33 +0200 |
| commit | fdc34e82c0f968ac4c157bd3d8c299ebc24c9c63 (patch) | |
| tree | a43aaf4a07dcd7f861409d952360dca3855f2df3 /drivers/media/cec | |
| parent | 220955ec3c84505ec6a75bea494ec61f5295ef7a (diff) | |
| download | linux-fdc34e82c0f968ac4c157bd3d8c299ebc24c9c63.tar.bz2 | |
media: s5p: fix pm_runtime_get_sync() usage count
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, avoiding
a potential PM usage counter leak.
While here, check if the PM runtime error was caught at
s5p_cec_adap_enable().
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/cec')
| -rw-r--r-- | drivers/media/cec/platform/s5p/s5p_cec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/cec/platform/s5p/s5p_cec.c b/drivers/media/cec/platform/s5p/s5p_cec.c index 3c7c4c3c798c..028a09a7531e 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); |