This is a note to let you know that I've just added the patch titled
usb: gadget: udc-core: fix asymmetric calls in remove_driver
to the 3.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-gadget-udc-core-fix-asymmetric-calls-in-remove_driver.patch
and it can be found in the queue-3.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 8ae8090c82eb407267001f75b3d256b3bd4ae691 Mon Sep 17 00:00:00 2001
From: Kishon Vijay Abraham I <[email protected]>
Date: Wed, 21 Mar 2012 21:34:30 +0530
Subject: usb: gadget: udc-core: fix asymmetric calls in remove_driver
From: Kishon Vijay Abraham I <[email protected]>
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 <[email protected]>
Signed-off-by: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/gadget/udc-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -212,8 +212,8 @@ static void usb_gadget_remove_driver(str
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);
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.3/usb-gadget-udc-core-fix-asymmetric-calls-in-remove_driver.patch
queue-3.3/usb-musb-omap-fix-crash-when-musb-glue-omap-gets-initialized.patch
queue-3.3/usb-musb-omap-fix-the-error-check-for-pm_runtime_get_sync.patch
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