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Commit 5381dac3 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "gpio: usbdetect: Avoid threaded IRQ handling if no change in ID"

parents b60469a0 24ecfd64

drivers/platform/msm/gpio-usbdetect.c

+11 −1
Original line number Diff line number Diff line
@@ -77,8 +77,16 @@ static irqreturn_t gpio_usbdetect_id_irq(int irq, void *data) 
static irqreturn_t gpio_usbdetect_id_irq_thread(int irq, void *data)

{

	struct gpio_usbdetect *usb = data;

	bool curr_id_state;

	static int prev_id_state = -EINVAL;



	if (usb->id_state) {

	curr_id_state = usb->id_state;

	if (curr_id_state == prev_id_state) {

		dev_dbg(&usb->pdev->dev, "no change in ID state\n");

		return IRQ_HANDLED;

	}



	if (curr_id_state) {

		dev_dbg(&usb->pdev->dev, "stopping usb host\n");

		extcon_set_cable_state_(usb->extcon_dev, EXTCON_USB_HOST, 0);

		enable_irq(usb->vbus_det_irq);
@@ -88,6 +96,8 @@ static irqreturn_t gpio_usbdetect_id_irq_thread(int irq, void *data) 
		extcon_set_cable_state_(usb->extcon_dev, EXTCON_USB_SPEED, 1);

		extcon_set_cable_state_(usb->extcon_dev, EXTCON_USB_HOST, 1);

	}



	prev_id_state = curr_id_state;

	return IRQ_HANDLED;

}