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SubjectRe: About commit "io: change inX() to have their own IO barrier overrides"
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On 06/03/2020 16:29, Arnd Bergmann wrote:
>> The idea is good, but it would be nice if we just somehow use a common
>> asm-generic io.h definition directly in logic_pio.c, like:
>>
>> asm-generic io.h:
>>
>> #ifndef __raw_inw // name?
>> #define __raw_inw __raw_inw
>> static inline u16 __raw_inw(unsigned long addr)
>> {
>> u16 val;
>>
>> __io_pbr();
>> val = __le16_to_cpu(__raw_readw(addr));
>> __io_par(val);
>> return val;
>> }
>> #endif
>>
>> #include <linux/logic_pio.h>
>>
>> #ifndef inw
>> #define inw __raw_inw
>> #endif
> Yes, makes sense. Maybe __arch_inw() then? Not great either, but I think
> that's better than __raw_inw() because __raw_* would sound like it
> mirrors __raw_readl() that lacks the barriers and byteswaps.

Right, I had the same concern. And maybe the "arch" prefix is
misleading. Just __inw could be ok, and hopefully not conflict with the
arch/arm/mach-* definitions.

Thanks,
John

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