diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 902f7ce86bbc1c94424cf3f48dfad074752412f9..d276d6d8e2b000c7cd0a3de64c4d54da37c2fa80 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -513,7 +513,7 @@ static void radeon_compute_pll_legacy(struct radeon_pll *pll,
 		max_fractional_feed_div = pll->max_frac_feedback_div;
 	}
 
-	for (post_div = min_post_div; post_div <= max_post_div; ++post_div) {
+	for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
 		uint32_t ref_div;
 
 		if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))