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 15:31:13 -0700 |
| commit | a201b074bf85bca4e37497c0b042ce7ae6096101 (patch) | |
| tree | 3497706c0da74f5df117f287458447697f5de5c0 | |
| parent | 9fe9ba7c3596a95bf05f30d70a39c89dceb80dd0 (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>
| -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 8080780bd2ff..87ba9cb44446 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -2475,8 +2475,15 @@ 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"); |