This is a note to let you know that I've just added the patch titled
media: media/v4l2-ctrls: volatiles should not generate CH_VALUE
to the 3.18-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-media-v4l2-ctrls-volatiles-should-not-generate-ch_value.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From foo@baz Wed Apr 4 17:30:18 CEST 2018
From: Mauro Carvalho Chehab <[email protected]>
Date: Wed, 28 Mar 2018 15:12:35 -0300
Subject: media: media/v4l2-ctrls: volatiles should not generate CH_VALUE
To: Linux Media Mailing List <[email protected]>,
[email protected]
Cc: Ricardo Ribalda <[email protected]>, Mauro Carvalho Chehab
<[email protected]>, Linux Kernel Mailing List
<[email protected]>, Hans Verkuil <[email protected]>, Mauro
Carvalho Chehab <[email protected]>, Mauro Carvalho Chehab
<[email protected]>
Message-ID:
<1663cf48e2eb96405c5d6d874020aa9925ee217f.1522260310.git.mche...@s-opensource.com>
From: Ricardo Ribalda <[email protected]>
Volatile controls should not generate CH_VALUE events.
Set has_changed to false to prevent this happening.
Signed-off-by: Ricardo Ribalda Delgado <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1619,6 +1619,15 @@ static int cluster_changed(struct v4l2_c
if (ctrl == NULL)
continue;
+ /*
+ * Set has_changed to false to avoid generating
+ * the event V4L2_EVENT_CTRL_CH_VALUE
+ */
+ if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+ ctrl->has_changed = false;
+ continue;
+ }
+
for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
ctrl->p_cur, ctrl->p_new);
Patches currently in stable-queue which might be from [email protected]
are
queue-3.18/media-v4l2-compat-ioctl32.c-copy-m.userptr-in-put_v4l2_plane32.patch
queue-3.18/media-v4l2-compat-ioctl32.c-avoid-sizeof-type.patch
queue-3.18/media-v4l2-compat-ioctl32.c-drop-pr_info-for-unknown-buffer-type.patch
queue-3.18/media-v4l2-compat-ioctl32-use-compat_u64-for-video-standard.patch
queue-3.18/media-v4l2-compat-ioctl32.c-add-missing-vidioc_prepare_buf.patch
queue-3.18/vb2-v4l2_buf_flag_done-is-set-after-dqbuf.patch
queue-3.18/media-v4l2-compat-ioctl32.c-refactor-compat-ioctl32-logic.patch
queue-3.18/media-v4l2-ctrls-fix-sparse-warning.patch
queue-3.18/media-v4l2-compat-ioctl32.c-fix-ctrl_is_pointer.patch
queue-3.18/media-v4l2-compat-ioctl32.c-move-helper-functions-to-__get-put_v4l2_format32.patch
queue-3.18/media-media-v4l2-ctrls-volatiles-should-not-generate-ch_value.patch
queue-3.18/media-v4l2-compat-ioctl32.c-don-t-copy-back-the-result-for-certain-errors.patch
queue-3.18/media-v4l2-compat-ioctl32.c-make-ctrl_is_pointer-work-for-subdevs.patch
queue-3.18/media-v4l2-compat-ioctl32.c-fix-the-indentation.patch
queue-3.18/media-v4l2-compat-ioctl32-copy-v4l2_window-global_alpha.patch
queue-3.18/media-v4l2-ioctl.c-don-t-copy-back-the-result-for-enotty.patch
queue-3.18/media-v4l2-compat-ioctl32.c-copy-clip-list-in-put_v4l2_window32.patch
queue-3.18/media-v4l2-compat-ioctl32-initialize-a-reserved-field.patch
