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authorFelix Fietkau <nbd@openwrt.org>2013-08-05 10:32:13 +0000
committerFelix Fietkau <nbd@openwrt.org>2013-08-05 10:32:13 +0000
commit1ddc303962ddc174ae17db03b55e24bbbc512289 (patch)
tree3650c7a37e9bbb5e02f6c59124d5e8444d9830b4
parent662f4981cb45b2bc21bd5d7d982d967bcd447d8a (diff)
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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> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37702 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c6
1 files changed, 4 insertions, 2 deletions
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);
}