diff options
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 0113c6c..051e8b0 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -2,6 +2,7 @@ * Copyright (c) 2007-2008, Juniper Networks, Inc. * Copyright (c) 2008, Excito Elektronik i Skåne AB * Copyright (c) 2008, Michael Trimarchi <trimarchimichael@yahoo.it> + * Copyright (C) 2016 Freescale Semiconductor, Inc. * * All rights reserved. * @@ -210,6 +211,9 @@ static int ehci_shutdown(struct ehci_ctrl *ctrl) return -EINVAL; cmd = ehci_readl(&ctrl->hcor->or_usbcmd); + /* If not run, directly return */ + if (!(cmd & CMD_RUN)) + return 0; cmd &= ~(CMD_PSE | CMD_ASE); ehci_writel(&ctrl->hcor->or_usbcmd, cmd); ret = handshake(&ctrl->hcor->or_usbsts, STS_ASS | STS_PSS, 0, |