lkml.org 
[lkml]   [2019]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] backlight: pwm_bl: Don't assign levels table repeatedly
Date
pwm_backlight_probe() re-assigns pb->levels for every brightness
level. This is not needed and was likely not intended, since
neither side of the assignment changes during the loop. Assign
the field only once.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---

Changes in v2:
- removed curly braces from for loop

drivers/video/backlight/pwm_bl.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 746eebc411df..05d3b3802658 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -564,18 +564,17 @@ static int pwm_backlight_probe(struct platform_device *pdev)
memset(&props, 0, sizeof(struct backlight_properties));

if (data->levels) {
+ pb->levels = data->levels;
+
/*
* For the DT case, only when brightness levels is defined
* data->levels is filled. For the non-DT case, data->levels
* can come from platform data, however is not usual.
*/
- for (i = 0; i <= data->max_brightness; i++) {
+ for (i = 0; i <= data->max_brightness; i++)
if (data->levels[i] > pb->scale)
pb->scale = data->levels[i];

- pb->levels = data->levels;
- }
-
if (pwm_backlight_is_linear(data))
props.scale = BACKLIGHT_SCALE_LINEAR;
else
--
2.23.0.444.g18eeb5a265-goog
\
 
 \ /
  Last update: 2019-10-02 18:57    [W:0.049 / U:0.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site