[PATCH v4 1/3] drm/amd/display: Add ASSERT_BUG() macro definition

[Tiezhu Yang]

In order to keep the current ability for the aim of debugging and avoid
printing the warning message twice, add ASSERT_BUG() macro definition to
harden the callers of division functions.

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
 drivers/gpu/drm/amd/display/dc/os_types.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h
index f2ba76c1e0c0..f0f4e22b43cd 100644
--- a/drivers/gpu/drm/amd/display/dc/os_types.h
+++ b/drivers/gpu/drm/amd/display/dc/os_types.h
@@ -79,6 +79,13 @@
 			dc_breakpoint();	\
 	} while (0)
 
+#define ASSERT_BUG(expr) do {			\
+		if (!(expr)) {			\
+			dc_breakpoint();	\
+			BUG();			\
+		}				\
+	} while (0)
+
 #define BREAK_TO_DEBUGGER() \
 	do { \
 		DRM_DEBUG_DRIVER("%s():%d\n", __func__, __LINE__); \
-- 
2.42.0