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authorBenoit Parrot <bparrot@ti.com>2015-09-21 13:03:21 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-10-01 08:43:41 -0300
commita8077734055f870ba630563868a6349671ca8dfc (patch)
tree0e52103a326681059e6def94881f381473658b46 /drivers/media/v4l2-core
parentd275d935900e10f01f2e43fb4a961ebcb48867bc (diff)
[media] media: v4l2-ctrls: Fix 64bit support in get_ctrl()
When trying to use v4l2_ctrl_g_ctrl_int64() to retrieve a V4L2_CTRL_TYPE_INTEGER64 type value the internal helper function get_ctrl() would prematurely exit because for this control type the 'is_int' flag is not set. This would result in v4l2_ctrl_g_ctrl_int64 always returning 0. Also v4l2_ctrl_g_ctrl_int64() is reading and returning the 32bit value member instead of the 64bit version, so fixing that as well. This patch extends the condition check to allow the V4L2_CTRL_TYPE_INTEGER64 type to continue processing instead of exiting. Signed-off-by: Benoit Parrot <bparrot@ti.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@osg.samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core')
-rw-r--r--drivers/media/v4l2-core/v4l2-ctrls.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index d5de70e62989..44521a9da66d 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -2884,7 +2884,7 @@ static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
* cur_to_user() calls below would need to be modified not to access
* userspace memory when called from get_ctrl().
*/
- if (!ctrl->is_int)
+ if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64)
return -EINVAL;
if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
@@ -2942,9 +2942,9 @@ s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl)
/* It's a driver bug if this happens. */
WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64);
- c.value = 0;
+ c.value64 = 0;
get_ctrl(ctrl, &c);
- return c.value;
+ return c.value64;
}
EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64);

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