diff options
| author | Tomoya MORINAGA <tomoya.rohm@gmail.com> | 2012-01-12 11:27:07 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-22 15:39:17 -0700 |
| commit | aa95f7fa2e6124553ad3d720d30682e4d12f4feb (patch) | |
| tree | 8de9f424ce2de047fbb52842810730d4a4c8211b /drivers/usb | |
| parent | 6946296876675c23d13b3406fff1d9b933afa0c6 (diff) | |
usb: gadget: pch_udc: Fix USB suspend issue
commit 84566abba058b2aae8d603dfa90b5a3778a6714f 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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/pch_udc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 62cc6ab90fd..db4b322e541 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -2476,8 +2476,15 @@ 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"); |