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drm/sti: do not set gdp pixel clock rate if mode is not set

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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>
This commit is contained in:
Vincent Abriou 2017-02-02 09:49:02 +01:00
parent 1b7f145123
commit c5649ee497
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/sti/sti_gdp.c
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@ -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;