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platform/x86: thinkpad_acpi: not loading brightness_init when _BCL invalid
authorAaron Ma <aaron.ma@canonical.com>
Fri, 10 Jul 2020 01:56:14 +0000 (09:56 +0800)
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Wed, 15 Jul 2020 09:45:06 +0000 (12:45 +0300)
commit46713aeee154205fc0285b0d9ac78cb4bdf246a7
treeb070b5379c9adf193304661de38bb6d85e31686d
parentacf7f4a59114471c3964f118564fe8e7a6f34bb8
platform/x86: thinkpad_acpi: not loading brightness_init when _BCL invalid

When _BCL invalid, disable thinkpad_acpi backlight brightness control.

brightness_enable is already checked at the beginning.
Most new thinkpads are using GPU driver to control brightness now,
print notice when enabled brightness control even when brightness_enable = 1.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
drivers/platform/x86/thinkpad_acpi.c