From: Tony Cheng <tony.ch...@amd.com>
- mask = 0 means something is wrong in caller and no register field will be
updated
Change-Id: Ib30c28ca30f574c703cd3b6acc42e5a401a9aff0
Signed-off-by: Tony Cheng <tony.ch...@amd.com>
Reviewed-by: Harry Wentland <harry.wentl...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dm_services.h | 1 +
1 file changed, 1 insertion(+)
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));
}
--
2.9.3
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