diff options
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 2f47bdc7c93a..d27ad104731c 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1739,7 +1739,6 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) int status; int old_state = hcd->state; - printk("%s\n", __func__); dev_dbg(&rhdev->dev, "bus %s%s\n", (msg.event & PM_EVENT_AUTO ? "auto-" : ""), "suspend"); if (!hcd->driver->bus_suspend) { @@ -1877,6 +1876,7 @@ EXPORT_SYMBOL_GPL(usb_bus_start_enum); irqreturn_t usb_hcd_irq (int irq, void *__hcd) { struct usb_hcd *hcd = __hcd; + struct fsl_usb2_platform_data *pdata; unsigned long flags; irqreturn_t rc; @@ -1885,14 +1885,25 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd) * assume it's never used. */ local_irq_save(flags); - /* At otg mode, the host does need to handle device interrupt */ - if (hcd->self.is_b_host){ - local_irq_restore(flags); - return IRQ_NONE; - } - else if (unlikely(hcd->state == HC_STATE_HALT || - !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) { + + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + /* Need open clock for register access */ + pdata = hcd->self.controller->platform_data; + if (pdata->usb_clock_for_pm) + pdata->usb_clock_for_pm(true); + + /* if receive a remote wakeup interrrupt after suspend */ + if (usb_host_wakeup_irq(hcd->self.controller)) { + /* disable remote wake up irq */ + usb_host_set_wakeup(hcd->self.controller, false); + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + hcd->driver->irq(hcd); + rc = IRQ_HANDLED; + } else rc = IRQ_NONE; + } else if (unlikely(hcd->state == HC_STATE_HALT)) { + rc = IRQ_NONE; } else if (hcd->driver->irq(hcd) == IRQ_NONE) { rc = IRQ_NONE; } else { |