media: uvcvideo: Fix support for V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX

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The VIDIOC_G_EXT_CTRLS with which V4L2_CTRL_WHICH_(MIN|MAX)_VAL can only
work for controls that have previously announced support for it.

This patch fixes the following v4l2-compliance error:

  info: checking extended control 'User Controls' (0x00980001)
  fail: v4l2-test-controls.cpp(980): ret != EINVAL (got 13)
        test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL

Fixes: 39d2c891c9 ("media: uvcvideo: support V4L2_CTRL_WHICH_MIN/MAX_VAL")
Cc: stable@vger.kernel.org
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

...

This commit is contained in:

Ricardo Ribalda 2025-11-19 20:17:36 +00:00 • committed by Hans Verkuil

parent 85883141d3

commit 4238bd6dc6

3 changed files with 19 additions and 7 deletions

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14

drivers/media/usb/uvc/uvc_ctrl.c

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10

drivers/media/usb/uvc/uvc_v4l2.c

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2

drivers/media/usb/uvc/uvcvideo.h

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