summaryrefslogtreecommitdiff
path: root/drivers/media/v4l2-core
diff options
context:
space:
mode:
authorRicardo Ribalda <ricardo.ribalda@gmail.com>2017-10-17 11:48:50 -0400
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-10-31 07:21:00 -0400
commit9cac9d2fb2fe0e0cadacdb94415b3fe49e3f724f (patch)
treea9f67a24c2aa233504ea43a6dfe687a3f208f385 /drivers/media/v4l2-core
parent0cba3f438cd6154621a3b4d66e0875ba213cd7ab (diff)
media: v4l2-ctrl: Fix flags field on Control events
VIDIOC_DQEVENT and VIDIOC_QUERY_EXT_CTRL should give the same output for the control flags field. This patch creates a new function user_flags(), that calculates the user exported flags value (which is different than the kernel internal flags structure). This function is then used by all the code that exports the internal flags to userspace. Reported-by: Dimitrios Katsaros <patcherwork@gmail.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: <stable@vger.kernel.org> # for v3.17 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/v4l2-core')
-rw-r--r--drivers/media/v4l2-core/v4l2-ctrls.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 4e53a8654690..c230bd5c6558 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1227,6 +1227,16 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
}
EXPORT_SYMBOL(v4l2_ctrl_fill);
+static u32 user_flags(const struct v4l2_ctrl *ctrl)
+{
+ u32 flags = ctrl->flags;
+
+ if (ctrl->is_ptr)
+ flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
+
+ return flags;
+}
+
static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
{
memset(ev->reserved, 0, sizeof(ev->reserved));
@@ -1234,7 +1244,7 @@ static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 change
ev->id = ctrl->id;
ev->u.ctrl.changes = changes;
ev->u.ctrl.type = ctrl->type;
- ev->u.ctrl.flags = ctrl->flags;
+ ev->u.ctrl.flags = user_flags(ctrl);
if (ctrl->is_ptr)
ev->u.ctrl.value64 = 0;
else
@@ -2577,10 +2587,8 @@ int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctr
else
qc->id = ctrl->id;
strlcpy(qc->name, ctrl->name, sizeof(qc->name));
- qc->flags = ctrl->flags;
+ qc->flags = user_flags(ctrl);
qc->type = ctrl->type;
- if (ctrl->is_ptr)
- qc->flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
qc->elem_size = ctrl->elem_size;
qc->elems = ctrl->elems;
qc->nr_of_dims = ctrl->nr_of_dims;