diff options
| author | Kishon Vijay Abraham I <kishon@ti.com> | 2012-03-21 21:34:30 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-27 10:16:51 -0700 |
| commit | fa0dc144ce618ddcbbe4047e9c1c61b44cee9594 (patch) | |
| tree | f41b2a8714581fe92e7540947d6097bb52d2da41 | |
| parent | 10dea522a023d442069362eb0aa389e0c5c04c25 (diff) | |
usb: gadget: udc-core: fix asymmetric calls in remove_driver
commit 8ae8090c82eb407267001f75b3d256b3bd4ae691 upstream.
During modprobe of gadget driver, pullup is called after
udc_start. In order to make the exit path symmetric when
removing a gadget driver, call pullup before ->udc_stop.
This is needed to avoid issues with PM where udc_stop
disables the module completely (put IP in reset state,
cut functional and interface clocks, and so on), which
prevents us from accessing the IP's address space,
thus creating the possibility of an abort exception
when we try to access IP's address space after clocks
are off.
Signed-off-by: Partha Basak <p-basak2@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/udc-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 475c997f35ed..ec02ed0e66a5 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -212,8 +212,8 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) if (udc_is_newstyle(udc)) { udc->driver->disconnect(udc->gadget); udc->driver->unbind(udc->gadget); - usb_gadget_udc_stop(udc->gadget, udc->driver); usb_gadget_disconnect(udc->gadget); + usb_gadget_udc_stop(udc->gadget, udc->driver); } else { usb_gadget_stop(udc->gadget, udc->driver); } |