lkml.org 
[lkml]   [2017]   [Apr]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/3] pwm: pwm-samsung: remove redundant checks from pwm_samsung_config()
Date
If the requested period_ns and duty_ns values are identical to
the last programmed ones pwm_samsung_config() returns early and
skips the hardware configuration. The same checks are now done
by the PWM core so the driver specific ones can be removed.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
drivers/pwm/pwm-samsung.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index f113cda..9ea7638 100644
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -312,9 +312,6 @@ static int pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm,
if (period_ns > NSEC_PER_SEC)
return -ERANGE;

- if (period_ns == chan->period_ns && duty_ns == chan->duty_ns)
- return 0;
-
tcnt = readl(our_chip->base + REG_TCNTB(pwm->hwpwm));
oldtcmp = readl(our_chip->base + REG_TCMPB(pwm->hwpwm));

--
1.9.1
\
 
 \ /
  Last update: 2017-04-24 12:02    [W:0.064 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site