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| author | Tony Cheng <tony.cheng@amd.com> | 2017-01-14 01:44:52 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 17:10:12 -0400 |
| commit | bf72726358adfedcf1c268690521891809332151 (patch) | |
| tree | da7bad4a95c74f8296ee8f7de4265072c6f54223 | |
| parent | f84a8161cb1652281746d113667427dbbf8bd5db (diff) | |
| download | linux-stable-bf72726358adfedcf1c268690521891809332151.tar.gz linux-stable-bf72726358adfedcf1c268690521891809332151.tar.bz2 linux-stable-bf72726358adfedcf1c268690521891809332151.zip | |
drm/amd/display: assert if mask is 0 in set_reg_field_value_ex
- mask = 0 means something is wrong in caller and no register field will be updated
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dm_services.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dm_services.h b/drivers/gpu/drm/amd/display/dc/dm_services.h index 11a0abfd3418..052a43af1bd3 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_services.h +++ b/drivers/gpu/drm/amd/display/dc/dm_services.h @@ -165,6 +165,7 @@ static inline uint32_t set_reg_field_value_ex( uint32_t mask, uint8_t shift) { + ASSERT(mask != 0); return (reg_value & ~mask) | (mask & (value << shift)); } |