From: Christian König Date: Wed, 9 Sep 2020 11:12:46 +0000 (+0200) Subject: drm/radeon: revert "Prefer lower feedback dividers" X-Git-Tag: io_uring-5.10-2020-10-20~48^2~11^2~63 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0f3cd13d846105795de271ac64bb807df38513b7;p=linux-2.6-block.git drm/radeon: revert "Prefer lower feedback dividers" Turns out this breaks a lot of different hardware. This reverts commit fc8c70526bd30733ea8667adb8b8ffebea30a8ed. Signed-off-by: Christian König Acked-by: Nirmoy Das Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 7b69d6dfe44a..e0ae911ef427 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -933,7 +933,7 @@ static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div, /* get matching reference and feedback divider */ *ref_div = min(max(den/post_div, 1u), ref_div_max); - *fb_div = max(nom * *ref_div * post_div / den, 1u); + *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den); /* limit fb divider to its maximum */ if (*fb_div > fb_div_max) {