summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pwm/core.c2
-rw-r--r--drivers/pwm/pwm-bfin.c3
-rw-r--r--drivers/pwm/pwm-pxa.c3
-rw-r--r--drivers/pwm/pwm-samsung.c3
-rw-r--r--drivers/pwm/pwm-tiecap.c2
-rw-r--r--drivers/pwm/pwm-tiehrpwm.c2
6 files changed, 3 insertions, 12 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 92b1782d0d8e..f5acdaa52707 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -371,7 +371,7 @@ EXPORT_SYMBOL_GPL(pwm_free);
*/
int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
{
- if (!pwm || period_ns == 0 || duty_ns > period_ns)
+ if (!pwm || duty_ns < 0 || period_ns <= 0 || duty_ns > period_ns)
return -EINVAL;
return pwm->chip->ops->config(pwm->chip, pwm, duty_ns, period_ns);
diff --git a/drivers/pwm/pwm-bfin.c b/drivers/pwm/pwm-bfin.c
index d53c4e7941ef..5da8e185e838 100644
--- a/drivers/pwm/pwm-bfin.c
+++ b/drivers/pwm/pwm-bfin.c
@@ -69,9 +69,6 @@ static int bfin_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long period, duty;
unsigned long long val;
- if (duty_ns < 0 || duty_ns > period_ns)
- return -EINVAL;
-
val = (unsigned long long)get_sclk() * period_ns;
do_div(val, NSEC_PER_SEC);
period = val;
diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c
index bd5867a1c700..260c3a88564d 100644
--- a/drivers/pwm/pwm-pxa.c
+++ b/drivers/pwm/pwm-pxa.c
@@ -70,9 +70,6 @@ static int pxa_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long offset;
int rc;
- if (period_ns == 0 || duty_ns > period_ns)
- return -EINVAL;
-
offset = pwm->hwpwm ? 0x10 : 0;
c = clk_get_rate(pc->clk);
diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index e5187c0ade9f..023a3bee76e7 100644
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -126,9 +126,6 @@ static int s3c_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
if (period_ns > NS_IN_HZ || duty_ns > NS_IN_HZ)
return -ERANGE;
- if (duty_ns > period_ns)
- return -EINVAL;
-
if (period_ns == s3c->period_ns &&
duty_ns == s3c->duty_ns)
return 0;
diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c
index 081471fbb097..d6d4cf05565e 100644
--- a/drivers/pwm/pwm-tiecap.c
+++ b/drivers/pwm/pwm-tiecap.c
@@ -60,7 +60,7 @@ static int ecap_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long period_cycles, duty_cycles;
unsigned int reg_val;
- if (period_ns < 0 || duty_ns < 0 || period_ns > NSEC_PER_SEC)
+ if (period_ns > NSEC_PER_SEC)
return -ERANGE;
c = pc->clk_rate;
diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index caf00feadc66..d3c1dff0a0dc 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -221,7 +221,7 @@ static int ehrpwm_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned short ps_divval, tb_divval;
int i, cmp_reg;
- if (period_ns < 0 || duty_ns < 0 || period_ns > NSEC_PER_SEC)
+ if (period_ns > NSEC_PER_SEC)
return -ERANGE;
c = pc->clk_rate;