evie/android_kernel_oneplus_msm8998
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Merge "gpio: usbdetect: Avoid threaded IRQ handling if no change in ID"

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Linux Build Service Account 2017-12-30 20:50:10 -08:00 • committed by Gerrit - the friendly Code Review server
commit 5381dac339
1 changed files with 11 additions and 1 deletions
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12
drivers/platform/msm/gpio-usbdetect.c
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@ -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;
}