tree f10696d1397dead43f70509432266f7afef9aeb9
parent ea186651d5a7b822c855de5de505c5c19812bf0b
author David Brownell <david-b@pacbell.net> 1156199198 -0700
committer Greg Kroah-Hartman <gregkh@suse.de> 1157072670 -0700

usb gadget: g_ether spinlock recursion fix

The new spinlock debug code turned up a spinlock recursion bug in the
Ethernet gadget driver on a disconnect path; it would show up with any
UDC driver where the cancellation of active requests was synchronous,
rather than e.g. delayed until a controller's completion IRQ.

That recursion is fixed here by creating and using a new spinlock to
protect the relevant lists.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>