Fix a division by 0 case : in some cases, when the GDP plane is being
disabled atomic_check() is called with "mode->clock = 0".
In that case, do not set parent and pixel clock rate.
Signed-off-by: Vincent Abriou <vincent.abriou@xxxxxx>
---
drivers/gpu/drm/sti/sti_gdp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 7255234..7f6d079 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -648,7 +648,7 @@ static int sti_gdp_atomic_check(struct drm_plane *drm_plane,
}
/* Set gdp clock */
- if (gdp->clk_pix) {
+ if (mode->clock && gdp->clk_pix) {
struct clk *clkp;
int rate = mode->clock * 1000;
int res;
--
2.7.4
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