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authorVivek Gautam <gautam.vivek@samsung.com>2014-04-10 14:28:01 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-04-17 00:59:13 +0400
commitd72175103f25783b0504f864a4f381621a789ca2 (patch)
treef0f4b179728e7596c02c058f65a2b624d5be79f2 /drivers/usb/host/ehci-exynos.c
parenta2ff864b53eac9a0e9b05bfe9d1781ccd6c2af71 (diff)
downloadlinux-d72175103f25783b0504f864a4f381621a789ca2.tar.xz
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>
Diffstat (limited to 'drivers/usb/host/ehci-exynos.c')
-rw-r--r--drivers/usb/host/ehci-exynos.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index d1d8c47777c5..7f425acd9be5 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -212,6 +212,8 @@ static int exynos_ehci_suspend(struct device *dev)
int rc;
rc = ehci_suspend(hcd, do_wakeup);
+ if (rc)
+ return rc;
if (exynos_ehci->otg)
exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);