| Message ID | 20210316180004.1605727-2-ribalda@chromium.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v5,01/13] media: v4l2-ioctl: Fix check_ext_ctrls | expand |
On 16/03/2021 18:59, Ricardo Ribalda wrote: > 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 <hverkuil-cisco@xs4all.nl> > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/media/v4l2-core/v4l2-ioctl.c | 25 +++++++++++++++++-------- > 1 file changed, 17 insertions(+), 8 deletions(-) > > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c > index 31d1342e61e8..9406e90ff805 100644 > --- a/drivers/media/v4l2-core/v4l2-ioctl.c > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c > @@ -917,15 +917,24 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) allow_priv really should be a bool. > for (i = 0; i < c->count; i++) > c->controls[i].reserved2[0] = 0; > > - /* V4L2_CID_PRIVATE_BASE cannot be used as control class > - when using extended controls. > - Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL > - is it allowed for backwards compatibility. > - */ > - if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) > - return 0; > - if (!c->which) > + switch (c->which) { > + case V4L2_CID_PRIVATE_BASE: > + /* > + * V4L2_CID_PRIVATE_BASE cannot be used as control class > + * when using extended controls. > + * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL > + * is it allowed for backwards compatibility. > + */ > + if (!allow_priv) > + return 0; > + break; > + case V4L2_CTRL_WHICH_DEF_VAL: I think it would be better if a second bool 'is_get' argument is added that is true for g_ctrl and g_ext_ctrls: then you can do a 'return is_get;' here. That way drivers do not need to take care of V4L2_CTRL_WHICH_DEF_VAL for set/try. Regards, Hans > + case V4L2_CTRL_WHICH_CUR_VAL: > return 1; > + case V4L2_CTRL_WHICH_REQUEST_VAL: > + return 0; > + } > + > /* 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) { >
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..9406e90ff805 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -917,15 +917,24 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0; - /* V4L2_CID_PRIVATE_BASE cannot be used as control class - when using extended controls. - Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL - is it allowed for backwards compatibility. - */ - if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) - return 0; - if (!c->which) + switch (c->which) { + case V4L2_CID_PRIVATE_BASE: + /* + * V4L2_CID_PRIVATE_BASE cannot be used as control class + * when using extended controls. + * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL + * is it allowed for backwards compatibility. + */ + if (!allow_priv) + return 0; + break; + case V4L2_CTRL_WHICH_DEF_VAL: + case V4L2_CTRL_WHICH_CUR_VAL: return 1; + case V4L2_CTRL_WHICH_REQUEST_VAL: + return 0; + } + /* 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) {
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 <hverkuil-cisco@xs4all.nl> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- drivers/media/v4l2-core/v4l2-ioctl.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-)