On Sat, Jun 17, 2017 at 9:43 PM, Sakari Ailus <[email protected]> wrote:
> On Sat, Jun 17, 2017 at 01:54:51AM +0300, Andy Shevchenko wrote:
>> On Thu, Jun 15, 2017 at 1:19 AM, Yong Zhi <[email protected]> wrote:
>> > +static void writes(void *mem, ssize_t len, void __iomem *reg)
>> > +{
>> > + while (len >= 4) {
>> > + writel(*(u32 *)mem, reg);
>> > + mem += 4;
>> > + reg += 4;
>> > + len -= 4;
>> > + }
>> > +}
>>
>> Again, I just looked into patches and first what I see is reinventing the
>> wheel.
>>
>> memcpy_toio()
> That doesn't quite work: the hardware only supports 32-bit access.
>
> So the answer is writesl().
Makes sense!
--
With Best Regards,
Andy Shevchenko
