Messages in this thread Patch in this message | | | From | Jonathan Liu <> | Subject | [PATCH v2 1/3] drm/sun4i: hdmi: Check for unset best_parent in sun4i_tmds_determine_rate | Date | Tue, 26 Dec 2017 22:12:25 +1100 |
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We should check if the best match has been set before comparing it.
Fixes: 9c5681011a0c ("drm/sun4i: Add HDMI support") Signed-off-by: Jonathan Liu <net147@gmail.com> --- drivers/gpu/drm/sun4i/sun4i_hdmi_tmds_clk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_tmds_clk.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_tmds_clk.c index dc332ea56f6c..4d235e5ea31c 100644 --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_tmds_clk.c +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_tmds_clk.c @@ -102,7 +102,7 @@ static int sun4i_tmds_determine_rate(struct clk_hw *hw, goto out; } - if (abs(rate - rounded / i) < + if (!best_parent || abs(rate - rounded / i) < abs(rate - best_parent / best_div)) { best_parent = rounded; best_div = i; -- 2.15.0
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