On 11/20/2012 09:10 AM, John Crispin wrote:
> Hi Hauke
>
>> u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
>> {
>> - return bcma_cc_read32(cc, BCMA_CC_GPIOIN)& mask;
>> + unsigned long flags;
>> + u32 res;
>> +
>> + spin_lock_irqsave(&cc->gpio_lock, flags);
>> + res = bcma_cc_read32(cc, BCMA_CC_GPIOIN)& mask;
>> + spin_unlock_irqrestore(&cc->gpio_lock, flags);
>> +
>> + return res;
>> }
>>
>
> Hi Hauke,
>
> do you need to lock the read access ?
>
> if bcma_cc_read32() is a simple memory read wrapper you most likely wont
> need the lock
>
> John
Yes you are right, I do not need it here, it is just needed for the
masked write to the other GPIO registers.
Hauke
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