platform/x86: asus-wmi: Fix keyboard brightness cannot be set to 0
commit5.4-rM2-2.2.x-imx-squashed176a7fca81
upstream. Some of ASUS laptops like UX431FL keyboard backlight cannot be set to brightness 0. According to ASUS' information, the brightness should be 0x80 ~ 0x83. This patch fixes it by following the logic. Fixes:e9809c0b96
("asus-wmi: add keyboard backlight support") Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com> Reviewed-by: Daniel Drake <drake@endlessm.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c79fff3feb
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3e4008fbdf
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@ -512,13 +512,7 @@ static void kbd_led_update(struct asus_wmi *asus)
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{
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int ctrl_param = 0;
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/*
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* bits 0-2: level
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* bit 7: light on/off
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*/
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if (asus->kbd_led_wk > 0)
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ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
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ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
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asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
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}
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