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| author | Mauro Carvalho Chehab | 2016-06-24 13:40:51 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2016-06-24 13:50:24 +0200 |
| commit | 318de7911feddb452a92c43fe67cc01dc3878daf (patch) | |
| tree | bd4934e9d945c3afcd30548c15f321eed4e32960 /drivers/media/pci/cx18/cx18-driver.h | |
| parent | exynos4-is: remove some unused vars (diff) | |
| download | kernel-qcow2-linux-318de7911feddb452a92c43fe67cc01dc3878daf.tar.gz kernel-qcow2-linux-318de7911feddb452a92c43fe67cc01dc3878daf.tar.xz kernel-qcow2-linux-318de7911feddb452a92c43fe67cc01dc3878daf.zip | |
cx18: use macros instead of static const vars
Gcc 6.1 now complains about unused vars:
drivers/media/pci/cx18/cx18-driver.h:497:18: warning: 'vbi_hblank_samples_50Hz' defined but not used [-Wunused-const-variable=]
static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */
^~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/cx18/cx18-driver.h:496:18: warning: 'vbi_hblank_samples_60Hz' defined but not used [-Wunused-const-variable=]
static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */
^~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/media/pci/cx18/cx18-cards.c:25:0:
drivers/media/pci/cx18/cx18-driver.h:497:18: warning: 'vbi_hblank_samples_50Hz' defined but not used [-Wunused-const-variable=]
static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */
^~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/cx18/cx18-driver.h:496:18: warning: 'vbi_hblank_samples_60Hz' defined but not used [-Wunused-const-variable=]
static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */
^~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/cx18/cx18-driver.h:495:18: warning: 'vbi_active_samples' defined but not used [-Wunused-const-variable=]
static const u32 vbi_active_samples = 1444; /* 4 byte SAV + 720 Y + 720 U/V */
^~~~~~~~~~~~~~~~~~
In this specific case, this is somewhat intentional, as those
values are actually used in parts of the driver. The code assumes
that gcc optimizer it and not actually create any var, but convert
it to immediate access at the routines.
Yet, as we want to shut up gcc warnings, let's use #define, with
is the standard way to store values that will use assembler's
immediate access code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/pci/cx18/cx18-driver.h')
| -rw-r--r-- | drivers/media/pci/cx18/cx18-driver.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/pci/cx18/cx18-driver.h b/drivers/media/pci/cx18/cx18-driver.h index 47ce80fa73b9..ef308a10e870 100644 --- a/drivers/media/pci/cx18/cx18-driver.h +++ b/drivers/media/pci/cx18/cx18-driver.h @@ -492,9 +492,9 @@ struct cx18_card; * (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line = * 4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples */ -static const u32 vbi_active_samples = 1444; /* 4 byte SAV + 720 Y + 720 U/V */ -static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */ -static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */ +#define VBI_ACTIVE_SAMPLES 1444 /* 4 byte SAV + 720 Y + 720 U/V */ +#define VBI_HBLANK_SAMPLES_60HZ 272 /* 4 byte EAV + 268 anc/fill */ +#define VBI_HBLANK_SAMPLES_50HZ 284 /* 4 byte EAV + 280 anc/fill */ #define CX18_VBI_FRAMES 32 |