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| author | Manjunath Goudar <manjunath.goudar@linaro.org> | 2013-10-04 09:58:07 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-05 17:56:41 -0700 |
| commit | 476e4bf939c9b947ea49923700fbac655cc9057c (patch) | |
| tree | 3a9b86e32b4c351635821da44f13570ede4a64e9 /drivers/usb/host/ohci-hcd.c | |
| parent | e81b1a6e15f77858c7ade5c071e48c94fda1226f (diff) | |
| download | linux-stable-476e4bf939c9b947ea49923700fbac655cc9057c.tar.gz linux-stable-476e4bf939c9b947ea49923700fbac655cc9057c.tar.bz2 linux-stable-476e4bf939c9b947ea49923700fbac655cc9057c.zip | |
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 <manjunath.goudar@linaro.org>
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-hcd.c')
| -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 8ada13f8dde2..310bcfe4ebc4 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1036,6 +1036,7 @@ 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 @@ -1048,7 +1049,13 @@ 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); |