Commit 89dfc28c authored by Henrique de Moraes Holschuh's avatar Henrique de Moraes Holschuh Committed by Richard Purdie
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backlight: extend event support to also support poll()

Extend the backlight event support to also allow the use of
poll()/select() on actual_brightness.

We already have the entire event hookup anyway, adding a single
function call in one line to get functionality like that is a really
good deal.
Signed-off-by: default avatarHenrique de Moraes Holschuh <>
Signed-off-by: default avatarRichard Purdie <>
parent d822d5c2
......@@ -91,6 +91,7 @@ static void backlight_generate_event(struct backlight_device *bd,
envp[1] = NULL;
kobject_uevent_env(&bd->dev.kobj, KOBJ_CHANGE, envp);
sysfs_notify(&bd->dev.kobj, NULL, "actual_brightness");
static ssize_t backlight_show_power(struct device *dev,
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