| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 013/173] backlight: atmel-pwm-bl: fix reported brightness | Date | Mon, 2 Dec 2013 11:09:56 -0800 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <jhovold@gmail.com>
commit 185d91442550110db67a7dc794a32efcea455a36 upstream.
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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/video/backlight/atmel-pwm-bl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- 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(st 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(st pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY); } - return intensity; + return intensity & 0xffff; } static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl)
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