From: Christian Hitz Date: Wed, 8 Oct 2025 12:32:21 +0000 (+0200) Subject: leds: leds-lp50xx: Allow LED 0 to be added to module bank X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=26fe74d598c32e7bc6f150edfc4aa43e1bee55db;p=thirdparty%2Flinux.git leds: leds-lp50xx: Allow LED 0 to be added to module bank led_banks contains LED module number(s) that should be grouped into the module bank. led_banks is 0-initialized. By checking the led_banks entries for 0, un-set entries are detected. But a 0-entry also indicates that LED module 0 should be grouped into the module bank. By only iterating over the available entries no check for unused entries is required and LED module 0 can be added to bank. Cc: stable@vger.kernel.org Fixes: 242b81170fb8 ("leds: lp50xx: Add the LP50XX family of the RGB LED driver") Signed-off-by: Christian Hitz Reviewed-by: Jacek Anaszewski Link: https://patch.msgid.link/20251008123222.1117331-1-christian@klarinett.li Signed-off-by: Lee Jones --- diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c index 94f8ef6b482c9..d50c7f3e8f999 100644 --- a/drivers/leds/leds-lp50xx.c +++ b/drivers/leds/leds-lp50xx.c @@ -341,17 +341,15 @@ out: return ret; } -static int lp50xx_set_banks(struct lp50xx *priv, u32 led_banks[]) +static int lp50xx_set_banks(struct lp50xx *priv, u32 led_banks[], int num_leds) { u8 led_config_lo, led_config_hi; u32 bank_enable_mask = 0; int ret; int i; - for (i = 0; i < priv->chip_info->max_modules; i++) { - if (led_banks[i]) - bank_enable_mask |= (1 << led_banks[i]); - } + for (i = 0; i < num_leds; i++) + bank_enable_mask |= (1 << led_banks[i]); led_config_lo = bank_enable_mask; led_config_hi = bank_enable_mask >> 8; @@ -405,7 +403,7 @@ static int lp50xx_probe_leds(struct fwnode_handle *child, struct lp50xx *priv, return ret; } - ret = lp50xx_set_banks(priv, led_banks); + ret = lp50xx_set_banks(priv, led_banks, num_leds); if (ret) { dev_err(priv->dev, "Cannot setup banked LEDs\n"); return ret;