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USB: OHCI: Properly handle ohci-s3c2410 suspend 

Suspend scenario in case of ohci-s3c2410 glue was not
properly handled as it was not suspending generic part
of ohci controller. Alan Stern suggested, properly handle
ohci-s3c2410 suspend scenario.

Calling explicitly the ohci_suspend()
routine in ohci_hcd_s3c2410_drv_suspend() will ensure
proper handling of suspend scenario.

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>
This commit is contained in:
Manjunath Goudar 2013-10-04 09:58:09 +05:30 committed by Greg Kroah-Hartman
parent 056ca85dab
commit 19d3394304
1 changed files with 4 additions and 17 deletions
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21
drivers/usb/host/ohci-s3c2410.c
View File

@ -426,28 +426,15 @@ static int ohci_hcd_s3c2410_drv_remove(struct platform_device *pdev)
static int ohci_hcd_s3c2410_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct platform_device *pdev = to_platform_device(dev);
unsigned long flags;
bool do_wakeup = device_may_wakeup(dev);
int rc = 0;
/*
* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (ohci->rh_state != OHCI_RH_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
rc = ohci_suspend(hcd, do_wakeup);
if (rc)
return rc;
s3c2410_stop_hc(pdev);
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}