Re: [PATCH v2 1/6] media: v4l2-ioctl: Fix check_ext_ctrls
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2021-03-11 23:44:32
Also in:
lkml, stable
Hi Ricardo, Thank you for the patch. On Thu, Mar 11, 2021 at 11:19:41PM +0100, Ricardo Ribalda wrote:
quoted hunk ↗ jump to hunk
Drivers that do not use the ctrl-framework use this function instead. - Return error when handling of REQUEST_VAL. - Do not check for multiple classes when getting the DEF_VAL. Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL Cc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil <redacted> Signed-off-by: Ricardo Ribalda <redacted> --- drivers/media/v4l2-core/v4l2-ioctl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..6f6b310e2802 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c@@ -924,8 +924,10 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) */ if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) return 0; - if (!c->which) + if (!c->which || c->which == V4L2_CTRL_WHICH_DEF_VAL)
How about if (c->which == V4L2_CTRL_WHICH_CUR_VAL || c->which == V4L2_CTRL_WHICH_DEF_VAL)
return 1; + if (c->which == V4L2_CTRL_WHICH_REQUEST_VAL) + return 0;
Or possibly
switch (c->which) {
case V4L2_CTRL_WHICH_CUR_VAL:
case V4L2_CTRL_WHICH_DEF_VAL:
return 1;
case V4L2_CTRL_WHICH_REQUEST_VAL:
return 0;
}
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
/* Check that all controls are from the same control class. */
for (i = 0; i < c->count; i++) {
if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {-- Regards, Laurent Pinchart