Merge tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux...

[cascardo/linux.git] / drivers / pwm / pwm-samsung.c

diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index ada2d32..f113cda 100644 (file)
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -193,9 +193,18 @@ static unsigned long pwm_samsung_calc_tin(struct samsung_pwm_chip *chip,
         * divider settings and choose the lowest divisor that can generate
         * frequencies lower than requested.
         */
-       for (div = variant->div_base; div < 4; ++div)
-               if ((rate >> (variant->bits + div)) < freq)
-                       break;
+       if (variant->bits < 32) {
+               /* Only for s3c24xx */
+               for (div = variant->div_base; div < 4; ++div)
+                       if ((rate >> (variant->bits + div)) < freq)
+                               break;
+       } else {
+               /*
+                * Other variants have enough counter bits to generate any
+                * requested rate, so no need to check higher divisors.
+                */
+               div = variant->div_base;
+       }
 
        pwm_samsung_set_divisor(chip, chan, BIT(div));