| Message ID | 1424184090-14945-1-git-send-email-ricardo.ribalda@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
This is v3 of the patch. I forgot to add it to the subject. I have marked v1 and v2 as Superseded on patchwork Thanks On Tue, Feb 17, 2015 at 3:41 PM, Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> wrote: > Volatile controls can change their value outside the v4l-ctrl framework. > We should ignore the cached written value of the ctrl when evaluating if > we should run s_ctrl. > > Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> > --- > drivers/media/v4l2-core/v4l2-ctrls.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c > index 45c5b47..693a473 100644 > --- a/drivers/media/v4l2-core/v4l2-ctrls.c > +++ b/drivers/media/v4l2-core/v4l2-ctrls.c > @@ -1609,6 +1609,12 @@ static int cluster_changed(struct v4l2_ctrl *master) > > if (ctrl == NULL) > continue; > + > + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { > + changed = true; > + continue; > + } > + > for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) > ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, > ctrl->p_cur, ctrl->p_new); > -- > 2.1.4 >
On 02/17/2015 03:41 PM, Ricardo Ribalda Delgado wrote: > Volatile controls can change their value outside the v4l-ctrl framework. > We should ignore the cached written value of the ctrl when evaluating if > we should run s_ctrl. > > Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> > --- > drivers/media/v4l2-core/v4l2-ctrls.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c > index 45c5b47..693a473 100644 > --- a/drivers/media/v4l2-core/v4l2-ctrls.c > +++ b/drivers/media/v4l2-core/v4l2-ctrls.c > @@ -1609,6 +1609,12 @@ static int cluster_changed(struct v4l2_ctrl *master) > > if (ctrl == NULL) > continue; > + > + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { > + changed = true; You need to explicitly set 'ctrl->has_changed = false;' here. And a comment why it is set to false (to prevent sending the event) is needed as well since it would look a bit weird otherwise. Regards, Hans > + continue; > + } > + > for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) > ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, > ctrl->p_cur, ctrl->p_new); > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 45c5b47..693a473 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -1609,6 +1609,12 @@ static int cluster_changed(struct v4l2_ctrl *master) if (ctrl == NULL) continue; + + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { + changed = true; + continue; + } + for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, ctrl->p_cur, ctrl->p_new);
Volatile controls can change their value outside the v4l-ctrl framework. We should ignore the cached written value of the ctrl when evaluating if we should run s_ctrl. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> --- drivers/media/v4l2-core/v4l2-ctrls.c | 6 ++++++ 1 file changed, 6 insertions(+)