From: Johan Hovold <jhovold@gmail.com>
Date: Tue, 12 Nov 2013 23:09:38 +0000 (-0800)
Subject: backlight: atmel-pwm-bl: fix reported brightness
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=185d91442550110db67a7dc794a32efcea455a36;p=openwrt%2Fstaging%2Fblogic.git

backlight: atmel-pwm-bl: fix reported brightness

The driver supports 16-bit brightness values, but the value returned
from get_brightness was truncated to eight bits.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c
index 66885fbb8e97..0971a8e78fbd 100644
--- a/drivers/video/backlight/atmel-pwm-bl.c
+++ b/drivers/video/backlight/atmel-pwm-bl.c
@@ -70,7 +70,7 @@ static int atmel_pwm_bl_set_intensity(struct backlight_device *bd)
 static int atmel_pwm_bl_get_intensity(struct backlight_device *bd)
 {
 	struct atmel_pwm_bl *pwmbl = bl_get_data(bd);
-	u8 intensity;
+	u32 intensity;
 
 	if (pwmbl->pdata->pwm_active_low) {
 		intensity = pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY) -
@@ -80,7 +80,7 @@ static int atmel_pwm_bl_get_intensity(struct backlight_device *bd)
 			pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY);
 	}
 
-	return intensity;
+	return intensity & 0xffff;
 }
 
 static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl)