tree a30b526ad74c2885ae9f8d9f10f412f6d7ff0f59
parent 91aa5fadb831e7b6ea473a526a6b49c6dc4819ce
author Russell King - ARM Linux <linux@arm.linux.org.uk> 1294093884 +0000
committer Dan Williams <dan.j.williams@intel.com> 1294197370 -0800

ARM: PL08x: fix locking in tasklet

Tasklets are run from an interruptible context.  The slave DMA functions
can be called from within IRQ handlers.  Taking the spinlock without
disabling interrupts allows an interrupt handler to run, which may try
to take the spinlock again, resulting in deadlock.  Fix this by using
the irqsave spinlocks.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>