From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Ricardo Ribalda <ribalda@chromium.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
tfiga@chromium.org
Subject: Re: [PATCH v9 15/22] media: uvcvideo: Set error_idx during ctrl_commit errors
Date: Thu, 10 Jun 2021 20:05:23 +0300 [thread overview]
Message-ID: <YMJGU65navuuEjnA@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20210326095840.364424-16-ribalda@chromium.org>
Hi Ricardo,
Thank you for the patch.
On Fri, Mar 26, 2021 at 10:58:33AM +0100, Ricardo Ribalda wrote:
> If we have an error setting a control, return the affected control in
> the error_idx field.
>
> Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 42 ++++++++++++++++++++++++++------
> drivers/media/usb/uvc/uvc_v4l2.c | 2 +-
> drivers/media/usb/uvc/uvcvideo.h | 10 +++-----
> 3 files changed, 40 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index 24fd5afc4e4f..bcebf9d1a46f 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -1586,7 +1586,7 @@ int uvc_ctrl_begin(struct uvc_video_chain *chain)
> }
>
> static int uvc_ctrl_commit_entity(struct uvc_device *dev,
> - struct uvc_entity *entity, int rollback)
> + struct uvc_entity *entity, int rollback, struct uvc_control **err_ctrl)
> {
> struct uvc_control *ctrl;
> unsigned int i;
> @@ -1628,31 +1628,59 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
>
> ctrl->dirty = 0;
>
> - if (ret < 0)
> + if (ret < 0) {
> + if (err_ctrl)
> + *err_ctrl = ctrl;
> return ret;
> + }
> }
>
> return 0;
> }
>
> +static int uvc_ctrl_find_ctrlidx(struct uvc_entity *entity,
s/uvc_ctrl_find_ctrlidx/uvc_ctrl_find_ctrl_idx/
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> + struct v4l2_ext_controls *ctrls,
> + struct uvc_control *uvc_control)
> +{
> + struct uvc_control_mapping *mapping;
> + struct uvc_control *ctrl_found;
> + unsigned int i;
> +
> + if (!entity)
> + return ctrls->count;
> +
> + for (i = 0; i < ctrls->count; i++) {
> + __uvc_find_control(entity, ctrls->controls[i].id, &mapping,
> + &ctrl_found, 0);
> + if (uvc_control == ctrl_found)
> + return i;
> + }
> +
> + return ctrls->count;
> +}
> +
> int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
> - const struct v4l2_ext_control *xctrls,
> - unsigned int xctrls_count)
> + struct v4l2_ext_controls *ctrls)
> {
> struct uvc_video_chain *chain = handle->chain;
> + struct uvc_control *err_ctrl;
> struct uvc_entity *entity;
> int ret = 0;
>
> /* Find the control. */
> list_for_each_entry(entity, &chain->entities, chain) {
> - ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);
> + ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback,
> + &err_ctrl);
> if (ret < 0)
> goto done;
> }
>
> if (!rollback)
> - uvc_ctrl_send_events(handle, xctrls, xctrls_count);
> + uvc_ctrl_send_events(handle, ctrls->controls, ctrls->count);
> done:
> + if (ret < 0 && ctrls)
> + ctrls->error_idx = uvc_ctrl_find_ctrlidx(entity, ctrls,
> + err_ctrl);
> mutex_unlock(&chain->ctrl_mutex);
> return ret;
> }
> @@ -2110,7 +2138,7 @@ int uvc_ctrl_restore_values(struct uvc_device *dev)
> ctrl->dirty = 1;
> }
>
> - ret = uvc_ctrl_commit_entity(dev, entity, 0);
> + ret = uvc_ctrl_commit_entity(dev, entity, 0, NULL);
> if (ret < 0)
> return ret;
> }
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index a3ee1dc003fc..8d8b12a4db34 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -1088,7 +1088,7 @@ static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh *handle,
> ctrls->error_idx = 0;
>
> if (ioctl == VIDIOC_S_EXT_CTRLS)
> - return uvc_ctrl_commit(handle, ctrls->controls, ctrls->count);
> + return uvc_ctrl_commit(handle, ctrls);
> else
> return uvc_ctrl_rollback(handle);
> }
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 9471c342a310..0313b30f0cea 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -887,17 +887,15 @@ void uvc_ctrl_status_event(struct uvc_video_chain *chain,
>
> int uvc_ctrl_begin(struct uvc_video_chain *chain);
> int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
> - const struct v4l2_ext_control *xctrls,
> - unsigned int xctrls_count);
> + struct v4l2_ext_controls *ctrls);
> static inline int uvc_ctrl_commit(struct uvc_fh *handle,
> - const struct v4l2_ext_control *xctrls,
> - unsigned int xctrls_count)
> + struct v4l2_ext_controls *ctrls)
> {
> - return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count);
> + return __uvc_ctrl_commit(handle, 0, ctrls);
> }
> static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
> {
> - return __uvc_ctrl_commit(handle, 1, NULL, 0);
> + return __uvc_ctrl_commit(handle, 1, NULL);
> }
>
> int uvc_ctrl_get(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl);
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2021-06-10 17:05 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-26 9:58 [PATCH v9 00/22] uvcvideo: Fix v4l2-compliance errors Ricardo Ribalda
2021-03-26 9:58 ` [PATCH v9 01/22] media: v4l2-ioctl: Fix check_ext_ctrls Ricardo Ribalda
2021-06-10 16:19 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 02/22] media: pvrusb2: Do not check for V4L2_CTRL_WHICH_DEF_VAL Ricardo Ribalda
2021-06-10 17:29 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 03/22] media: uvcvideo: " Ricardo Ribalda
2021-06-10 16:21 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 04/22] media: v4l2-ioctl: S_CTRL output the right value Ricardo Ribalda
2021-06-10 16:23 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 05/22] media: uvcvideo: Remove s_ctrl and g_ctrl Ricardo Ribalda
2021-06-10 16:24 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 06/22] media: uvcvideo: Set capability in s_param Ricardo Ribalda
2021-03-26 9:58 ` [PATCH v9 07/22] media: uvcvideo: Return -EIO for control errors Ricardo Ribalda
2021-03-26 9:58 ` [PATCH v9 08/22] media: uvcvideo: refactor __uvc_ctrl_add_mapping Ricardo Ribalda
2021-03-26 9:58 ` [PATCH v9 09/22] media: uvcvideo: Add support for V4L2_CTRL_TYPE_CTRL_CLASS Ricardo Ribalda
2021-06-10 16:42 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 10/22] media: uvcvideo: Use dev->name for querycap() Ricardo Ribalda
2021-06-10 16:44 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 11/22] media: uvcvideo: Set unique vdev name based in type Ricardo Ribalda
2021-06-10 16:45 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 12/22] media: uvcvideo: Increase the size of UVC_METADATA_BUF_SIZE Ricardo Ribalda
2021-06-10 16:48 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 13/22] media: uvcvideo: Use control names from framework Ricardo Ribalda
2021-06-10 16:50 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 14/22] media: uvcvideo: Check controls flags before accessing them Ricardo Ribalda
2021-06-10 16:55 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 15/22] media: uvcvideo: Set error_idx during ctrl_commit errors Ricardo Ribalda
2021-06-10 17:05 ` Laurent Pinchart [this message]
2021-03-26 9:58 ` [PATCH v9 16/22] media: uvcvideo: Return -EACCES to inactive controls Ricardo Ribalda
2021-03-27 11:23 ` Hans Verkuil
2021-06-10 17:28 ` Laurent Pinchart
2021-06-10 18:40 ` Ricardo Ribalda
2021-06-10 19:47 ` Ricardo Ribalda Delgado
2021-03-26 9:58 ` [PATCH v9 17/22] media: docs: Document the behaviour of uvcdriver Ricardo Ribalda
2021-03-27 11:19 ` Hans Verkuil
2021-03-27 12:01 ` Ricardo Ribalda
2021-03-27 12:03 ` Hans Verkuil
2021-06-10 17:08 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 18/22] media: uvcvideo: Downgrade control error messages Ricardo Ribalda
2021-03-27 11:19 ` Hans Verkuil
2021-06-10 16:59 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 19/22] uvcvideo: uvc_ctrl_is_accessible: check for INACTIVE Ricardo Ribalda
2021-03-27 12:26 ` Ricardo Ribalda Delgado
2021-03-26 9:58 ` [PATCH v9 20/22] uvcvideo: improve error handling in uvc_query_ctrl() Ricardo Ribalda
2021-06-10 17:14 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 21/22] uvcvideo: don't spam the log in uvc_ctrl_restore_values() Ricardo Ribalda
2021-06-10 16:57 ` Laurent Pinchart
2021-03-26 9:58 ` [PATCH v9 22/22] uvc: use vb2 ioctl and fop helpers Ricardo Ribalda
2021-04-02 2:50 ` Tomasz Figa
2021-05-25 8:06 ` [PATCH v9 00/22] uvcvideo: Fix v4l2-compliance errors Tomasz Figa
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