[PATCH V3 1/4] pwm: tegra: Use DIV_ROUND_CLOSEST_ULL() instead of local implementation

From	Laxman Dewangan <ldewangan@nvidia.com>
Newsgroups	linux.kernel
Subject	[PATCH V3 1/4] pwm: tegra: Use DIV_ROUND_CLOSEST_ULL() instead of local implementation
Date	2017-04-07 12:00 +0200
Message-ID	<ttyQq-5pF-11@gated-at.bofh.it> (permalink)
References	<ttyQq-5pF-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Use macro DIV_ROUND_CLOSEST_ULL() for 64bit division to closest one
instead of implementing the same locally. This increase readability.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>

---
Changes from v1:
- None

Changes from V2:
- Fix typo in commit message.
---
 drivers/pwm/pwm-tegra.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index e464784..0a688da 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -85,8 +85,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 	 * nearest integer during division.
 	 */
 	c *= (1 << PWM_DUTY_WIDTH);
-	c += period_ns / 2;
-	do_div(c, period_ns);
+	c = DIV_ROUND_CLOSEST_ULL(c, period_ns);
 
 	val = (u32)c << PWM_DUTY_SHIFT;
 
-- 
2.1.4

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH V3 1/4] pwm: tegra: Use DIV_ROUND_CLOSEST_ULL() instead of local implementation Laxman Dewangan <ldewangan@nvidia.com> - 2017-04-07 12:00 +0200

csiph-web