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authorThomas Bächler <thomas@archlinux.org>2014-03-27 23:41:59 +0100
committerTom Gundersen <teg@jklm.no>2014-04-04 15:14:12 +0200
commit3cadce7d33e263ec7a6a83c00c11144930258b22 (patch)
tree4ad54bab7aa85eb7ac365fd4fe655477e610dff9 /src/journal
parent51e430a5b053dde2abc4bbd5d702ff2b900f10c2 (diff)
backlight: do nothing if max_brightness is 0
On virtually any newer Asus mainboard, the eeepc-wmi driver is loaded. It exposes a backlight device despite the lack of any physical backlight devices. This fake backlight device has max_brightness set to 0. Since the introduction of the clamp_brightness function, systemd-backlight tries to write '1' to brightness and fails. This patch changes systemd-backlight to exit gracefully when max_brightness is 0 before performing any action. This affects both the load and save actions.
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