* [PATCH] media: sun6i-csi: Allow the video device to be open multiple times
@ 2021-09-08 10:56 Ondrej Jirman
2021-09-08 18:24 ` Jernej Škrabec
0 siblings, 1 reply; 2+ messages in thread
From: Ondrej Jirman @ 2021-09-08 10:56 UTC (permalink / raw)
To: Yong Deng, Mauro Carvalho Chehab, Maxime Ripard, Chen-Yu Tsai,
Jernej Skrabec, open list:CSI DRIVERS FOR ALLWINNER V3s,
moderated list:ARM/Allwinner sunXi SoC support,
open list:ARM/Allwinner sunXi SoC support, open list
Cc: Ondrej Jirman
Previously it was possible, but a recent fix for uninitialized
`ret` variable broke this behavior.
v4l2_fh_is_singular_file() check is there just to determine
whether the power needs to be enabled, and it's not a failure
if it returns false.
Fixes: ba9139116bc0538 ("media: sun6i-csi: add a missing return code")
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
index 0129dee798b4..da1f8b2852b7 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
@@ -510,7 +510,7 @@ static const struct v4l2_ioctl_ops sun6i_video_ioctl_ops = {
static int sun6i_video_open(struct file *file)
{
struct sun6i_video *video = video_drvdata(file);
- int ret;
+ int ret = 0;
if (mutex_lock_interruptible(&video->lock))
return -ERESTARTSYS;
@@ -524,10 +524,8 @@ static int sun6i_video_open(struct file *file)
goto fh_release;
/* check if already powered */
- if (!v4l2_fh_is_singular_file(file)) {
- ret = -EBUSY;
+ if (!v4l2_fh_is_singular_file(file))
goto unlock;
- }
ret = sun6i_csi_set_power(video->csi, true);
if (ret < 0)
--
2.33.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] media: sun6i-csi: Allow the video device to be open multiple times
2021-09-08 10:56 [PATCH] media: sun6i-csi: Allow the video device to be open multiple times Ondrej Jirman
@ 2021-09-08 18:24 ` Jernej Škrabec
0 siblings, 0 replies; 2+ messages in thread
From: Jernej Škrabec @ 2021-09-08 18:24 UTC (permalink / raw)
To: Yong Deng, Mauro Carvalho Chehab, Maxime Ripard, Chen-Yu Tsai,
open list:CSI DRIVERS FOR ALLWINNER V3s,
moderated list:ARM/Allwinner sunXi SoC support,
open list:ARM/Allwinner sunXi SoC support, open list,
Ondrej Jirman
Cc: Ondrej Jirman
Hi Ondrej!
Dne sreda, 08. september 2021 ob 12:56:09 CEST je Ondrej Jirman napisal(a):
> Previously it was possible, but a recent fix for uninitialized
> `ret` variable broke this behavior.
>
> v4l2_fh_is_singular_file() check is there just to determine
> whether the power needs to be enabled, and it's not a failure
> if it returns false.
>
> Fixes: ba9139116bc0538 ("media: sun6i-csi: add a missing return code")
Only 12 characters for SHA-1 ID
> Signed-off-by: Ondrej Jirman <megous@megous.com>
Otherwise:
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Best regards,
Jernej
^ permalink raw reply [flat|nested] 2+ messages in thread
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