[PATCH] drm/modes: Prevent division by zero htotal

[Tina Zhang]

This patch prevents division by zero htotal.

Signed-off-by: Tina Zhang <tina.zhang at intel.com>
Cc: Adam Jackson <ajax at redhat.com>
Cc: Dave Airlie <airlied at redhat.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
---
 drivers/gpu/drm/drm_modes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index adce9a2..59b92b1 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -751,7 +751,7 @@ int drm_mode_hsync(const struct drm_display_mode *mode)
 	if (mode->hsync)
 		return mode->hsync;
 
-	if (mode->htotal < 0)
+	if (mode->htotal <= 0)
 		return 0;
 
 	calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */
-- 
2.7.4