kernel: gpio-button-hotplug: update to use threaded irq's

Many gpio controllers 'cansleep' due to the fact that they are behind busses
e.g. i2c etc.

Using threaded irq's allows for 'sleep-able' gpio's to be used.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48696 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 029a388..6d1a197 100644 (file)
--- a/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c
+++ b/package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c
@@ -555,20 +555,17 @@ static int gpio_keys_probe(struct platform_device *pdev)
                struct gpio_keys_button *button = &pdata->buttons[i];
                struct gpio_keys_button_data *bdata = &bdev->data[i];
 
-               if (bdata->can_sleep) {
-                       dev_err(&pdev->dev, "skipping gpio:%d, it can sleep\n", button->gpio);
-                       continue;
-               }
                if (!button->irq)
                        button->irq = gpio_to_irq(button->gpio);
                if (button->irq < 0) {
                        dev_err(&pdev->dev, "failed to get irq for gpio:%d\n", button->gpio);
                        continue;
                }
-               ret = devm_request_irq(&pdev->dev, button->irq, button_handle_irq,
-                                       IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-                                       dev_name(&pdev->dev), bdata);
-               if (ret)
+
+               ret = devm_request_threaded_irq(&pdev->dev, button->irq, NULL, button_handle_irq,
+                                               IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+                                               dev_name(&pdev->dev), bdata);
+               if (ret < 0)
                        dev_err(&pdev->dev, "failed to request irq:%d for gpio:%d\n", button->irq, button->gpio);
                else
                        dev_dbg(&pdev->dev, "gpio:%d has irq:%d\n", button->gpio, button->irq);