diff options
| author | Majunath Goudar <csmanjuvijay@gmail.com> | 2013-11-13 17:40:16 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 17:53:17 -0800 |
| commit | e1bffbf622ebceff411fef4970f0fa6326b45830 (patch) | |
| tree | ba6726deef0c6d9e1f66b59a7aa6b0a4fbcd0eb2 | |
| parent | f625099f1a504742aef4c6ab20ba0ca981847e3c (diff) | |
USB: OHCI: Properly handle OHCI controller suspend
Suspend scenario in case of OHCI was not properly
handled in ochi_suspend()routine. Alan Stern
suggested, properly handle OHCI suspend scenario.
This does generic proper handling of suspend
scenario to all OHCI SOC.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index c8e0e7637b7b..3586460fb2a1 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1026,6 +1026,7 @@ int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); unsigned long flags; + int rc = 0; /* Disable irq emission and mark HW unaccessible. Use * the spinlock to properly synchronize with possible pending @@ -1038,7 +1039,13 @@ int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); spin_unlock_irqrestore (&ohci->lock, flags); - return 0; + synchronize_irq(hcd->irq); + + if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) { + ohci_resume(hcd, false); + rc = -EBUSY; + } + return rc; } EXPORT_SYMBOL_GPL(ohci_suspend); |