diff options
| author | Vivek Gautam <gautam.vivek@samsung.com> | 2014-04-10 14:28:01 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-17 00:59:13 +0400 |
| commit | d72175103f25783b0504f864a4f381621a789ca2 (patch) | |
| tree | f0f4b179728e7596c02c058f65a2b624d5be79f2 | |
| parent | a2ff864b53eac9a0e9b05bfe9d1781ccd6c2af71 (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/usb/host/ehci-exynos.c | 2 |
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); |