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authorVincent Abriou <vincent.abriou@st.com>2017-02-02 09:49:02 +0100
committerVincent Abriou <vincent.abriou@st.com>2017-02-10 09:34:39 +0100
commitc5649ee49761f5367c46c5ae6579ab8e8b03575d (patch)
tree6bf45a1847cb24c9720e14565b6c59605cd8ec77 /drivers/gpu/drm/sti
parent1b7f145123f4d59e6b88a83b507c7981df0ee701 (diff)
drm/sti: do not set gdp pixel clock rate if mode is not set
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@st.com>
Diffstat (limited to 'drivers/gpu/drm/sti')
-rw-r--r--drivers/gpu/drm/sti/sti_gdp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 7255234670c0..7f6d0790cca6 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;