Messages in this thread Patch in this message | | | Date | Fri, 9 Apr 2021 09:53:17 +0100 | From | Rui Miguel Silva <> | Subject | Re: [PATCH] [v2] media: imx: imx7-mipi-csis: Fix runtime PM imbalance in mipi_csis_s_stream |
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Hi Liu, Many thanks for the patch.
On Fri, Apr 09, 2021 at 04:22:25PM +0800, Dinghao Liu wrote: > When v4l2_subdev_call() fails, a pairing PM usage counter > decrement is needed to keep the counter balanced. It's the > same for the following error paths in case 'enable' is on. > > Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
LGTM Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
------ Cheers, Rui > --- > > Changelog: > > v2: - Use pm_runtime_put() to balance the refcount. > --- > drivers/staging/media/imx/imx7-mipi-csis.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c > index a01a7364b4b9..6f3e8a15e7c4 100644 > --- a/drivers/staging/media/imx/imx7-mipi-csis.c > +++ b/drivers/staging/media/imx/imx7-mipi-csis.c > @@ -628,7 +628,7 @@ static int mipi_csis_s_stream(struct v4l2_subdev *mipi_sd, int enable) > } > ret = v4l2_subdev_call(state->src_sd, core, s_power, 1); > if (ret < 0) > - return ret; > + goto pm_put; > } > > mutex_lock(&state->lock); > @@ -657,7 +657,8 @@ static int mipi_csis_s_stream(struct v4l2_subdev *mipi_sd, int enable) > > unlock: > mutex_unlock(&state->lock); > - if (!enable) > +pm_put: > + if (!enable || (ret < 0)) > pm_runtime_put(&state->pdev->dev); > > return ret; > -- > 2.17.1 > >
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