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-rw-r--r--arch/arm/plat-s3c24xx/pwm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c24xx/pwm.c b/arch/arm/plat-s3c24xx/pwm.c
index 0120b760315b..82a6d4de02a3 100644
--- a/arch/arm/plat-s3c24xx/pwm.c
+++ b/arch/arm/plat-s3c24xx/pwm.c
@@ -246,6 +246,10 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
246 246
247 tcmp = duty_ns / tin_ns; 247 tcmp = duty_ns / tin_ns;
248 tcmp = tcnt - tcmp; 248 tcmp = tcnt - tcmp;
249 /* the pwm hw only checks the compare register after a decrement,
250 so the pin never toggles if tcmp = tcnt */
251 if (tcmp == tcnt)
252 tcmp--;
249 253
250 pwm_dbg(pwm, "tin_ns=%lu, tcmp=%ld/%lu\n", tin_ns, tcmp, tcnt); 254 pwm_dbg(pwm, "tin_ns=%lu, tcmp=%ld/%lu\n", tin_ns, tcmp, tcnt);
251 255