This is a note to let you know that I've just added the patch titled media: v4l2-ioctl: S_CTRL output the right value to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: media-v4l2-ioctl-s_ctrl-output-the-right-value.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit caabb4a2859d013885a406cc3d4c20994a7275e9 Author: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> Date: Fri Jun 18 14:29:06 2021 +0200 media: v4l2-ioctl: S_CTRL output the right value [ Upstream commit c87ed93574e3cd8346c05bd934c617596c12541b ] If the driver does not implement s_ctrl, but it does implement s_ext_ctrls, we convert the call. When that happens we have also to convert back the response from s_ext_ctrls. Fixes v4l2_compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(411): returned control value out of range fail: v4l2-test-controls.cpp(507): invalid control 00980900 test VIDIOC_G/S_CTRL: FAIL Fixes: 35ea11ff8471 ("V4L/DVB (8430): videodev: move some functions from v4l2-dev.h to v4l2-common.h or v4l2-ioctl.h") Reviewed-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index da5b4002a466a..f4f67b385d00a 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2224,6 +2224,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; struct v4l2_ext_controls ctrls; struct v4l2_ext_control ctrl; + int ret; if (vfh && vfh->ctrl_handler) return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); @@ -2239,9 +2240,11 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value; - if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) - return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); - return -EINVAL; + if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) + return -EINVAL; + ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); + p->value = ctrl.value; + return ret; } static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,