From f658f48d662c5ecd84af235f47cc48636b9a55e2 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor Date: Thu, 27 Sep 2018 17:50:39 -0700 Subject: [PATCH] staging: bcm2835-camera: Avoid unneeded internal declaration warning Clang warns: drivers/staging/vc04_services/bcm2835-camera/controls.c:59:18: warning: variable 'mains_freq_qmenu' is not needed and will not be emitted [-Wunneeded-internal-declaration] static const s64 mains_freq_qmenu[] = { ^ 1 warning generated. This is because mains_freq_qmenu is currently only used in an ARRAY_SIZE macro, which is a compile time evaluation in this case. Avoid this by adding mains_freq_qmenu as the imenu member of this structure, which matches all other controls that uses the ARRAY_SIZE macro in v4l2_ctrls. This turns out to be a no-op because V4L2_CID_MPEG_VIDEO_BITRATE_MODE is defined as a MMAL_CONTROL_TYPE_STD_MENU, which does not pass the imenu definition along to v4l2_ctrl_new in bm2835_mmal_init_controls. Link: https://github.com/ClangBuiltLinux/linux/issues/122 Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vc04_services/bcm2835-camera/controls.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/vc04_services/bcm2835-camera/controls.c +++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c @@ -1109,7 +1109,7 @@ static const struct bm2835_mmal_v4l2_ctr { V4L2_CID_POWER_LINE_FREQUENCY, MMAL_CONTROL_TYPE_STD_MENU, 0, ARRAY_SIZE(mains_freq_qmenu) - 1, - 1, 1, NULL, + 1, 1, mains_freq_qmenu, MMAL_PARAMETER_FLICKER_AVOID, &ctrl_set_flicker_avoidance, false