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usb: ehci-exynos: 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: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vivek Gautam 2014-04-10 15:58:01 +05:30 committed by Greg Kroah-Hartman
parent a2ff864b53
commit d72175103f
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/host/ehci-exynos.c
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@ -212,6 +212,8 @@ static int exynos_ehci_suspend(struct device *dev)
int rc; int rc;
rc = ehci_suspend(hcd, do_wakeup); rc = ehci_suspend(hcd, do_wakeup);
if (rc)
return rc;
if (exynos_ehci->otg) if (exynos_ehci->otg)
exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);