Em Tue, 27 Apr 2021 12:51:45 +0200
Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> escreveu:
> On 27.04.2021 12:26, Mauro Carvalho Chehab wrote:
> > 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@xxxxxxxxxx>
> > ---
> > 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);
>
> Reviewed-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
>
> Not related to this patch, it seems there is bug in the second
> 'if (enable)' branch, where pm_runtime_disable() is used
> instead of pm_runtime_put(_sync)().
Yeah. I'll add an additional patch before this series in order to
fix the bug. Thanks!
Regards,
Mauro
Thanks,
Mauro
