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usb: gadget: pch_udc: Fix USB suspend issue

Browse Source 
commit 84566abba0 upstream.

ISSUE:
After USB Suspend, a system rarely freezes.

CAUSE:
When USB Suspend occurred, the driver is not notifying
a gadget of the event.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomoya MORINAGA
2012-01-12 11:27:07 +09:00
committed by Greg Kroah-Hartman
parent 6ec7b0ee0b
commit 1a64354452
1 changed files with 8 additions and 1 deletions
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9
drivers/usb/gadget/pch_udc.c
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@@ -2478,8 +2478,15 @@ static void pch_udc_dev_isr(struct pch_udc_dev *dev, u32 dev_intr)
if (dev_intr & UDC_DEVINT_SC)
pch_udc_svc_cfg_interrupt(dev);
/* USB Suspend interrupt */
if (dev_intr & UDC_DEVINT_US)
if (dev_intr & UDC_DEVINT_US) {
if (dev->driver
&& dev->driver->suspend) {
spin_unlock(&dev->lock);
dev->driver->suspend(&dev->gadget);
spin_lock(&dev->lock);
}
dev_dbg(&dev->pdev->dev, "USB_SUSPEND\n");
}
/* Clear the SOF interrupt, if enabled */
if (dev_intr & UDC_DEVINT_SOF)
dev_dbg(&dev->pdev->dev, "SOF\n");