diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-03-04 10:18:38 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-19 19:16:04 (GMT) |
| commit | 1de1951930d4450d1645a0a907b710f268af42c3 (patch) | |
| tree | fafa302bede6d683050882b14ad3c48766ede5c1 /drivers/media/platform/davinci | |
| parent | b12aed0ec518eb348ae0f6d196fd726c57670823 (diff) | |
| download | linux-1de1951930d4450d1645a0a907b710f268af42c3.tar.xz | |
[media] davinci/dm644x_ccdc: fix compiler warning
drivers/media/platform/davinci/dm644x_ccdc.c: In function ‘validate_ccdc_param’:
drivers/media/platform/davinci/dm644x_ccdc.c:233:32: warning: comparison between ‘enum ccdc_gama_width’ and ‘enum ccdc_data_size’ [-Wenum-compare]
It took a bit of work, see this thread of an earlier attempt to fix this:
https://patchwork.kernel.org/patch/1923091/
I've chosen not to follow the suggestions in that thread since gamma_width is
really a different property from data_size. What you really want is to know if
gamma_width fits inside data_size and for that you need to translate each
enum into a maximum bit number so you can safely compare the two.
So I put in two static inline translation functions instead, keeping the rest
of the code the same (except for fixing the 'gama' typo).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/davinci')
| -rw-r--r-- | drivers/media/platform/davinci/dm644x_ccdc.c | 13 | ||||
| -rw-r--r-- | drivers/media/platform/davinci/dm644x_ccdc_regs.h | 2 |
2 files changed, 9 insertions, 6 deletions
diff --git a/drivers/media/platform/davinci/dm644x_ccdc.c b/drivers/media/platform/davinci/dm644x_ccdc.c index 318e805..971d639 100644 --- a/drivers/media/platform/davinci/dm644x_ccdc.c +++ b/drivers/media/platform/davinci/dm644x_ccdc.c @@ -228,9 +228,12 @@ static void ccdc_readregs(void) static int validate_ccdc_param(struct ccdc_config_params_raw *ccdcparam) { if (ccdcparam->alaw.enable) { - if ((ccdcparam->alaw.gama_wd > CCDC_GAMMA_BITS_09_0) || - (ccdcparam->alaw.gama_wd < CCDC_GAMMA_BITS_15_6) || - (ccdcparam->alaw.gama_wd < ccdcparam->data_sz)) { + u8 max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd); + u8 max_data = ccdc_data_size_max_bit(ccdcparam->data_sz); + + if ((ccdcparam->alaw.gamma_wd > CCDC_GAMMA_BITS_09_0) || + (ccdcparam->alaw.gamma_wd < CCDC_GAMMA_BITS_15_6) || + (max_gamma > max_data)) { dev_dbg(ccdc_cfg.dev, "\nInvalid data line select"); return -1; } @@ -560,8 +563,8 @@ void ccdc_config_raw(void) /* Enable and configure aLaw register if needed */ if (config_params->alaw.enable) { - val = ((config_params->alaw.gama_wd & - CCDC_ALAW_GAMA_WD_MASK) | CCDC_ALAW_ENABLE); + val = ((config_params->alaw.gamma_wd & + CCDC_ALAW_GAMMA_WD_MASK) | CCDC_ALAW_ENABLE); regw(val, CCDC_ALAW); dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to ALAW...\n", val); } diff --git a/drivers/media/platform/davinci/dm644x_ccdc_regs.h b/drivers/media/platform/davinci/dm644x_ccdc_regs.h index 90370e4..2b0aca5 100644 --- a/drivers/media/platform/davinci/dm644x_ccdc_regs.h +++ b/drivers/media/platform/davinci/dm644x_ccdc_regs.h @@ -84,7 +84,7 @@ #define CCDC_VDHDEN_ENABLE (1 << 16) #define CCDC_LPF_ENABLE (1 << 14) #define CCDC_ALAW_ENABLE (1 << 3) -#define CCDC_ALAW_GAMA_WD_MASK 7 +#define CCDC_ALAW_GAMMA_WD_MASK 7 #define CCDC_BLK_CLAMP_ENABLE (1 << 31) #define CCDC_BLK_SGAIN_MASK 0x1F #define CCDC_BLK_ST_PXL_MASK 0x7FFF |