git.openwrt.org Git - openwrt/staging/linusw.git/blob

   1 From f658f48d662c5ecd84af235f47cc48636b9a55e2 Mon Sep 17 00:00:00 2001
   2 From: Nathan Chancellor <natechancellor@gmail.com>
   3 Date: Thu, 27 Sep 2018 17:50:39 -0700
   4 Subject: [PATCH] staging: bcm2835-camera: Avoid unneeded internal
   5  declaration warning
   6
   7 Clang warns:
   8
   9 drivers/staging/vc04_services/bcm2835-camera/controls.c:59:18: warning:
  10 variable 'mains_freq_qmenu' is not needed and will not be emitted
  11 [-Wunneeded-internal-declaration]
  12 static const s64 mains_freq_qmenu[] = {
  13                  ^
  14 1 warning generated.
  15
  16 This is because mains_freq_qmenu is currently only used in an ARRAY_SIZE
  17 macro, which is a compile time evaluation in this case. Avoid this by
  18 adding mains_freq_qmenu as the imenu member of this structure, which
  19 matches all other controls that uses the ARRAY_SIZE macro in v4l2_ctrls.
  20 This turns out to be a no-op because V4L2_CID_MPEG_VIDEO_BITRATE_MODE is
  21 defined as a MMAL_CONTROL_TYPE_STD_MENU, which does not pass the imenu
  22 definition along to v4l2_ctrl_new in bm2835_mmal_init_controls.
  23
  24 Link: https://github.com/ClangBuiltLinux/linux/issues/122
  25 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
  26 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  27 ---
  28  drivers/staging/vc04_services/bcm2835-camera/controls.c | 2 +-
  29  1 file changed, 1 insertion(+), 1 deletion(-)
  30
  31 --- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
  32 +++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
  33 @@ -1109,7 +1109,7 @@ static const struct bm2835_mmal_v4l2_ctr
  34         {
  35                 V4L2_CID_POWER_LINE_FREQUENCY, MMAL_CONTROL_TYPE_STD_MENU,
  36                 0, ARRAY_SIZE(mains_freq_qmenu) - 1,
  37 -               1, 1, NULL,
  38 +               1, 1, mains_freq_qmenu,
  39                 MMAL_PARAMETER_FLICKER_AVOID,
  40                 &ctrl_set_flicker_avoidance,
  41                 false