Re: About commit "io: change inX() to have their own IO barrier overrides"

[Sinan Kaya <okaya@xxxxxxxxxx>]

On 3/3/2020 11:40 AM, Arnd Bergmann wrote:
>> -          ret = read##bw(PCI_IOBASE + addr);
>> +          __io_pbr();
>> +          ret = __raw_read##bw(PCI_IOBASE + addr);
>> +          __io_pbr();
> __io_par();
> 

Why do we need to change read##bw above?

read##bw already provides strong ordering guarantees across multiple
architectures.