Re: [PATCH 3/5] ARM: sa1100: use ioremapped memory to access SC registers

Thomas Gleixner
2015-01-24T17:49:16Z

On Thu, 15 Jan 2015, Dmitry Eremin-Solenikov wrote:
> static void sa1100_mask_irq(struct irq_data *d)
> {
> - ICMR &= ~BIT(d->hwirq);
> + u32 reg;
> + unsigned long flags;
> +
> + raw_spin_lock_irqsave(&lock, flags);

What's the exact point of that lock? And how is it related to the
$subject of the patch?

Thanks,

tglx