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led: Update led_get_by_label()

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During led_init() execution, led_get_label() returns either the label
property (which is an obsolete property [1]) or the LED's node name.
It can't be the function name as dev parameter is NULL.

Later, during led_post_bind() execution, for the same LED, the attributed
label by led_get_label() can be the function name, as led_get_label()
dev's parameter is set.

During call sequence led_boot_on() => led_boot_get() => led_get_by_label()
with label given in parameter (priv->boot_led_label which is either the
label or node's name set previously in led_init()) can be different to
to uc_plat->label and returns -ENODEV.

Update led_get_by_label() to allow to retrieve LED also by its node name.

[1] https://www.kernel.org/doc/Documentation/devicetree/bindings/leds/common.yaml

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Yegor Yefremov <yegorslists@googlemail.com>
This commit is contained in:
Patrice Chotard
2025-10-09 15:08:33 +02:00
committed by Tom Rini
parent 0eaa4b3373
commit d9915318b5
1 changed files with 3 additions and 0 deletions
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3
drivers/led/led-uclass.c
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@@ -65,6 +65,9 @@ int led_get_by_label(const char *label, struct udevice **devp)
/* Ignore the top-level LED node */
if (uc_plat->label && !strcmp(label, uc_plat->label))
return uclass_get_device_tail(dev, 0, devp);
if (!strcmp(label, ofnode_get_name(dev_ofnode(dev))))
return uclass_get_device_tail(dev, 0, devp);
}
return -ENODEV;