[v2] mfd: dln2: use irqsave() in USB's complete callback

[Lee Jones <lee.jones@linaro.org>]

On Mon, 02 Jul 2018, Sebastian Andrzej Siewior wrote:

> The USB completion callback does not disable interrupts while acquiring
> the lock. We want to remove the local_irq_disable() invocation from
> __usb_hcd_giveback_urb() and therefore it is required for the callback
> handler to disable the interrupts while acquiring the lock.
> The callback may be invoked either in IRQ or BH context depending on the
> USB host controller.
> Use the _irqsave() variant of the locking primitives.
> 
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Octavian Purdila <tavi@cs.pub.ro>
> Reviewed-by: Johan Hovold <johan@kernel.org>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
> v1…v2: Remove also the comment that says that there is no need to
>        disable interrupts.
> 
>  drivers/mfd/dln2.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)

Applied, thanks.