diff options
| author | Vivek Gautam <gautam.vivek@samsung.com> | 2014-04-10 14:28:02 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-17 00:59:13 +0400 |
| commit | e155b5b8d2d42455d3a94c2460c287e97184ec61 (patch) | |
| tree | 850e0bdea19f102a4d43da2302210b577a8fa4dc /drivers/usb | |
| parent | d72175103f25783b0504f864a4f381621a789ca2 (diff) | |
| download | linux-e155b5b8d2d42455d3a94c2460c287e97184ec61.tar.xz | |
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/ehci-platform.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index b3a0e11073aa..c7dd93aad20c 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -303,6 +303,8 @@ static int ehci_platform_suspend(struct device *dev) int ret; ret = ehci_suspend(hcd, do_wakeup); + if (ret) + return ret; if (pdata->power_suspend) pdata->power_suspend(pdev); |