diff options
| author |   Peter Rosin <peda@axentia.se> | 2016-03-16 09:14:13 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-04-13 19:17:39 -0300 |
| commit | ecb7b0183a89613c154d1bea48b494907efbf8f9 (patch) | |
| tree | 3719495a0e9babac97e4f360a7571cc6a3fc4a2b /drivers/media/dvb-frontends/m88ds3103_priv.h | |
| parent | [media] media: platform: rcar_jpu, vsp1: Use ARCH_RENESAS (diff) | |
| download | linux-dev-ecb7b0183a89613c154d1bea48b494907efbf8f9.tar.xz linux-dev-ecb7b0183a89613c154d1bea48b494907efbf8f9.zip | |
[media] m88ds3103: fix undefined division
s32tmp in the below code may be negative, and dev->mclk_khz is an
unsigned type.
s32tmp = 0x10000 * (tuner_frequency - c->frequency);
s32tmp = DIV_ROUND_CLOSEST(s32tmp, dev->mclk_khz);
This is undefined, as DIV_ROUND_CLOSEST is undefined for negative
dividends when the divisor is of unsigned type.
So, change mclk_khz to be signed (s32).
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/m88ds3103_priv.h')
| -rw-r--r-- | drivers/media/dvb-frontends/m88ds3103_priv.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/dvb-frontends/m88ds3103_priv.h b/drivers/media/dvb-frontends/m88ds3103_priv.h index eee8c22c51ec..651e005146b2 100644 --- a/drivers/media/dvb-frontends/m88ds3103_priv.h +++ b/drivers/media/dvb-frontends/m88ds3103_priv.h @@ -46,7 +46,7 @@ struct m88ds3103_dev { /* auto detect chip id to do different config */ u8 chip_id; /* main mclk is calculated for M88RS6000 dynamically */ - u32 mclk_khz; + s32 mclk_khz; u64 post_bit_error; u64 post_bit_count; }; |