From 6743f2625b854cd45d253e289844524c99584777 Mon Sep 17 00:00:00 2001 From: Felix Fietkau <nbd@openwrt.org> Date: Mon, 5 Aug 2013 10:32:13 +0000 Subject: gpio-button-hotplug: debounce the initial button state, the first reads at boot time might be wrong Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 37702 --- package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'package/kernel') diff --git a/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c b/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c index 487c813dda..ea6f94ba43 100644 --- a/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c +++ b/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c @@ -298,7 +298,9 @@ static void gpio_keys_polled_check_state(struct gpio_keys_button *button, return; } - button_hotplug_event(bdata, type, button->code, state); + if (bdata->last_state != -1) + button_hotplug_event(bdata, type, button->code, state); + bdata->last_state = state; } @@ -508,7 +510,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev) } bdata->can_sleep = gpio_cansleep(gpio); - bdata->last_state = gpio_button_get_value(button, bdata); + bdata->last_state = -1; bdata->threshold = DIV_ROUND_UP(button->debounce_interval, pdata->poll_interval); } -- cgit v1.2.3