gpio-button-hotplug: use gpio_button_get_value() to initialize last_state.

TL-WR720N-v3 has a slider switch composed of 2 GPIO buttons which can be
used to swtich between 3 positions.  At leat 1 button is in pressed state
in any of those positions.  Initialize 'last_state' as 0 (released) will
cause the device to automatically enter failsafe mode on every bootup.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37643 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 9cbee21..74c2eca 100644 (file)
--- a/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c
+++ b/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c
@@ -509,7 +509,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
                }
 
                bdata->can_sleep = gpio_cansleep(gpio);
-               bdata->last_state = 0;
+               bdata->last_state = gpio_button_get_value(button, bdata);
                bdata->threshold = DIV_ROUND_UP(button->debounce_interval,
                                                pdata->poll_interval);
        }