The code that maps the LED default brightness to backlight levels has
two issues: 1) if the default brightness is the first backlight level
(usually 0), the code fails to find it, and 2) when the code fails to
find a backlight level, it ends up using max_brightness + 1 as the
default brightness.
Fix these two issues.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/backlight/led_bl.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/video/backlight/led_bl.c b/drivers/video/backlight/led_bl.c
index 63693c4f0883..43a5302f163a 100644
--- a/drivers/video/backlight/led_bl.c
+++ b/drivers/video/backlight/led_bl.c
@@ -159,10 +159,11 @@ static int led_bl_parse_levels(struct device *dev,
*/
db = priv->default_brightness;
for (i = 0 ; i < num_levels; i++) {
- if ((i && db > levels[i - 1]) && db <= levels[i])
+ if ((i == 0 || db > levels[i - 1]) && db <= levels[i])
break;
}
- priv->default_brightness = i;
+
+ priv->default_brightness = min(i, num_levels - 1);
priv->max_brightness = num_levels - 1;
priv->levels = levels;
} else if (num_levels >= 0) {
--
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