[PATCH v4 17/24] backlight: pwm_bl: remove useless call to pwm_set_period

Boris Brezillon
2015-11-16T08:56:40Z

The PWM period will be set when calling pwm_config. Remove this useless
call to pwm_set_period, which might mess up with the initial PWM state
once we have added proper support for PWM init state retrieval.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
drivers/video/backlight/pwm_bl.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 54d5a03..5ff2976 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -292,12 +292,14 @@ static int pwm_backlight_probe(struct platform_device *pdev)
* period, parsed from the DT, in the PWM device. For the non-DT case,
* set the period from platform data if it has not already been set
* via the PWM lookup table.
+ * FIXME: This assignment should be dropped as soon as all the boards
+ * have moved to the PWM lookup table approach. The same goes for the
+ * pb->period field which should be replaced by
+ * pwm_get_default_period() calls.
*/
pb->period = pwm_get_default_period(pb->pwm);
- if (!pb->period && (data->pwm_period_ns > 0)) {
+ if (!pb->period && (data->pwm_period_ns > 0))
pb->period = data->pwm_period_ns;
- pwm_set_period(pb->pwm, data->pwm_period_ns);
- }

pb->lth_brightness = data->lth_brightness * (pb->period / pb->scale);

--
2.1.4