On Fri, Mar 12, 2010 at 07:03:08PM +0100, florian@xxxxxxxxxxx wrote:
>
> +static ssize_t rfkill_hard_show(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct rfkill *rfkill = to_rfkill(dev);
> + unsigned long flags;
> + u32 state;
> +
> + spin_lock_irqsave(&rfkill->lock, flags);
> + state = rfkill->state;
> + spin_unlock_irqrestore(&rfkill->lock, flags);
Why exactly is this lock needed?
> +
> + return sprintf(buf, "%d\n", (state & RFKILL_BLOCK_HW) ? 1 : 0 );
> +}
> +
> +static ssize_t rfkill_soft_show(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct rfkill *rfkill = to_rfkill(dev);
> + unsigned long flags;
> + u32 state;
> +
> + spin_lock_irqsave(&rfkill->lock, flags);
> + state = rfkill->state;
> + spin_unlock_irqrestore(&rfkill->lock, flags);
And here as well...
--
Dmitry
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