From: Stuart Hayhurst Date: Tue, 14 Nov 2023 11:38:08 +0000 (+0000) Subject: platform/x86: ideapad-laptop: Set max_brightness before using it X-Git-Tag: v6.6.7~413 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=77cc23ef4306356e96a21f52edc254d9eb7a2c44;p=platform%2Fkernel%2Flinux-starfive.git platform/x86: ideapad-laptop: Set max_brightness before using it commit 7a3c36eef9a5d13b16aa954da54224c9c6bed339 upstream. max_brightness is used in ideapad_kbd_bl_brightness_get() before it's set, causing ideapad_kbd_bl_brightness_get() to return -EINVAL sometimes. Fixes: ecaa1867b524 ("platform/x86: ideapad-laptop: Add support for keyboard backlights using KBLC ACPI symbol") Signed-off-by: Stuart Hayhurst Cc: stable@vger.kernel.org Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20231114114055.6220-2-stuart.a.hayhurst@gmail.com Signed-off-by: Ilpo Järvinen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index ac03754..88eefcc 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -1425,18 +1425,17 @@ static int ideapad_kbd_bl_init(struct ideapad_private *priv) if (WARN_ON(priv->kbd_bl.initialized)) return -EEXIST; - brightness = ideapad_kbd_bl_brightness_get(priv); - if (brightness < 0) - return brightness; - - priv->kbd_bl.last_brightness = brightness; - if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) { priv->kbd_bl.led.max_brightness = 2; } else { priv->kbd_bl.led.max_brightness = 1; } + brightness = ideapad_kbd_bl_brightness_get(priv); + if (brightness < 0) + return brightness; + + priv->kbd_bl.last_brightness = brightness; priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT; priv->kbd_bl.led.brightness_get = ideapad_kbd_bl_led_cdev_brightness_get; priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;