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From f658f48d662c5ecd84af235f47cc48636b9a55e2 Mon Sep 17 00:00:00 2001
From: Nathan Chancellor <natechancellor@gmail.com>
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 <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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
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