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

This patch prevents division by zero htotal.

Signed-off-by: Tina Zhang tina.zhang@intel.com Cc: Adam Jackson ajax@redhat.com Cc: Dave Airlie airlied@redhat.com Cc: Daniel Vetter daniel@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 */