gpio-button-hotplug: debounce the initial button state, the first reads at boot time...

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37702 3c298f89-4303-0410-b956-a3cf2f4a3e73

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 487c813..ea6f94b 100644 (file)
--- 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);
        }