phy: freescale: fsl-samsung-hdmi: Stop searching when exact match is found

There are a series of for-loops which check various values of P and S
for the integer divder PLL.  The for loops search all entries and use
the one closest to the nominal, but it continues to searches through
all for loops even after the nominal is achieved.  Ending when the
nominal value is found stops wasting time, since it will not find
a better value than a deviation of 0 Hz.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/20241026132014.73050-2-aford173@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
index 412c03b7dcd69b16c5d04ac7b9037c343ea45487..121f67455cec11da90fea515f60a4d3eda6c08bc 100644 (file)
--- a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
+++ b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
@@ -440,9 +440,13 @@ static unsigned long fsl_samsung_hdmi_phy_find_pms(unsigned long fout, u8 *p, u1
                                min_delta = delta;
                                best_freq = tmp;
                        }
+
+                       /* If we have an exact match, stop looking for a better value */
+                       if (!delta)
+                               goto done;
                }
        }
-
+done:
        if (best_freq) {
                *p = best_p;
                *m = best_m;