From: Ricardo Ribalda <ribalda@chromium.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
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
Cc: Ricardo Ribalda <ribalda@chromium.org>
Subject: [PATCH v7 16/17] media: uvcvideo: Set error_idx during ctrl_commit errors
Date: Thu, 18 Mar 2021 21:29:27 +0100 [thread overview]
Message-ID: <20210318202928.166955-17-ribalda@chromium.org> (raw)
In-Reply-To: <20210318202928.166955-1-ribalda@chromium.org>
If we have an error setting a control, return the affected control in
the error_idx field.
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
drivers/media/usb/uvc/uvc_ctrl.c | 37 ++++++++++++++++++++++++++++----
1 file changed, 33 insertions(+), 4 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index fb8155ca0c0d..a5dc49e14aea 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1614,7 +1614,7 @@ 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;
@@ -1656,23 +1656,49 @@ 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,
+ 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,
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;
}
@@ -1680,6 +1706,9 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
if (!rollback)
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;
}
@@ -2137,7 +2166,7 @@ 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;
}
--
2.31.0.rc2.261.g7f71774620-goog
next prev parent reply other threads:[~2021-03-18 20:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 20:29 [PATCH v7 00/17] uvcvideo: Fix v4l2-compliance errors Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 01/17] media: v4l2-ioctl: Fix check_ext_ctrls Ricardo Ribalda
2021-03-19 9:02 ` Hans Verkuil
2021-03-18 20:29 ` [PATCH v7 02/17] media: pvrusb2: Do not check for V4L2_CTRL_WHICH_DEF_VAL Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 03/17] media: uvcvideo: " Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 04/17] media: uvcvideo: Set capability in s_param Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 05/17] media: uvcvideo: Return -EIO for control errors Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 06/17] media: uvcvideo: refactor __uvc_ctrl_add_mapping Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 07/17] media: uvcvideo: Add support for V4L2_CTRL_TYPE_CTRL_CLASS Ricardo Ribalda
2021-03-19 7:46 ` Hans Verkuil
2021-03-18 20:29 ` [PATCH v7 08/17] media: uvcvideo: Use dev->name for querycap() Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 09/17] media: uvcvideo: Set unique vdev name based in type Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 10/17] media: uvcvideo: Increase the size of UVC_METADATA_BUF_SIZE Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 11/17] media: uvcvideo: Use control names from framework Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 12/17] media: uvcvideo: Check controls flags before accessing them Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 13/17] media: uvcvideo: Return -EACCES to inactive controls Ricardo Ribalda
2021-03-19 9:10 ` Hans Verkuil
2021-03-19 9:49 ` Ricardo Ribalda
2021-03-19 13:40 ` Hans Verkuil
2021-03-18 20:29 ` [PATCH v7 14/17] media: docs: Document the behaviour of uvcdriver Ricardo Ribalda
2021-03-18 20:29 ` [PATCH v7 15/17] media: uvcvideo: Refactor __uvc_ctrl_commit Ricardo Ribalda
2021-03-19 8:33 ` Hans Verkuil
2021-03-19 15:01 ` Ricardo Ribalda Delgado
2021-03-18 20:29 ` Ricardo Ribalda [this message]
2021-03-18 20:29 ` [PATCH v7 17/17] uvc: use vb2 ioctl and fop helpers Ricardo Ribalda
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