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usb: ehci-platform: Return immediately from suspend if ehci_suspend fails 

Patch 'b8efdaf USB: EHCI: add check for wakeup/suspend race'
adds a check for possible race between suspend and wakeup interrupt,
and thereby it returns -EBUSY as error code if there's a wakeup
interrupt.
So the platform host controller should not proceed further with
its suspend callback, rather should return immediately to avoid
powering down the essential things, like phy.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vivek Gautam 2014-04-10 15:58:02 +05:30 committed by Greg Kroah-Hartman
parent d72175103f
commit e155b5b8d2
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/host/ehci-platform.c
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@ -303,6 +303,8 @@ static int ehci_platform_suspend(struct device *dev)
int ret; int ret;
ret = ehci_suspend(hcd, do_wakeup); ret = ehci_suspend(hcd, do_wakeup);
if (ret)
return ret;
if (pdata->power_suspend) if (pdata->power_suspend)
pdata->power_suspend(pdev); pdata->power_suspend(pdev);