[ARM] 5303/1: period_cycles should be greater than 1

If period_cycles is 0, prescale becomes silly.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-pxa/pwm.c b/arch/arm/mach-pxa/pwm.c
index 316cd98..74e2ead 100644 (file)
--- a/arch/arm/mach-pxa/pwm.c
+++ b/arch/arm/mach-pxa/pwm.c
@@ -60,7 +60,7 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
        do_div(c, 1000000000);
        period_cycles = c;
 
-       if (period_cycles < 0)
+       if (period_cycles < 1)
                period_cycles = 1;
        prescale = (period_cycles - 1) / 1024;
        pv = period_cycles / (prescale + 1) - 1;