linux-kernel - [PATCH 2/2] pwm: atmel-tcb: fix max time computation for slow clk source

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Date:	Wed, 18 Sep 2013 17:06:21 +0200
From:	Boris BREZILLON <b.brezillon@...rkiz.com>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	linux-pwm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Boris BREZILLON <b.brezillon@...rkiz.com>
Subject: [PATCH 2/2] pwm: atmel-tcb: fix max time computation for slow clk source

Use the the tcb counter width to compute the maximum time that can be
represented using the slow clock source instead of the static 16 bit width.

Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
---
 drivers/pwm/pwm-atmel-tcb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c
index 0266969..f3dcd02 100644
--- a/drivers/pwm/pwm-atmel-tcb.c
+++ b/drivers/pwm/pwm-atmel-tcb.c
@@ -307,7 +307,7 @@ static int atmel_tcb_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 		i = slowclk;
 		rate = 32768;
 		min = div_u64(NSEC_PER_SEC, rate);
-		max = min << 16;
+		max = min << tc->tcb_config->counter_width;
 
 		/* If period is too big return ERANGE error */
 		if (max < period_ns)
-- 
1.7.9.5

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