usb: ehci-platform: Return immediately from suspend if ehci_suspend fails
authorVivek Gautam <gautam.vivek@samsung.com>
Thu, 10 Apr 2014 10:28:02 +0000 (15:58 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Apr 2014 20:59:13 +0000 (13:59 -0700)
commite155b5b8d2d42455d3a94c2460c287e97184ec61
tree850e0bdea19f102a4d43da2302210b577a8fa4dc
parentd72175103f25783b0504f864a4f381621a789ca2
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>
drivers/usb/host/ehci-platform.c