Re: [PATCH net-next 6/9] net: phy: add backplane kr driver support

[Florian Fainelli]

On 3/26/2020 6:07 PM, Andrew Lunn wrote:
>> +static u32 le_ioread32(void __iomem *reg)
>> +{
>> +	return ioread32(reg);
>> +}
>> +
>> +static void le_iowrite32(u32 value, void __iomem *reg)
>> +{
>> +	iowrite32(value, reg);
>> +}
>> +
>> +static u32 be_ioread32(void __iomem *reg)
>> +{
>> +	return ioread32be(reg);
>> +}
>> +
>> +static void be_iowrite32(u32 value, void __iomem *reg)
>> +{
>> +	iowrite32be(value, reg);
>> +}
> 
> This is very surprising to me. I've not got my head around the
> structure of this code yet, but i'm surprised to see memory mapped
> access functions in generic code.

This abstraction makes no sense whatsoever, you already have
io{read,write}32{be,} to deal with the correct endian, and you can use
the standard Device Tree properties 'big-endian', 'little-endian',
'native-endian' to decide which of those of to use. If you need to
introduce a wrapper or indirect function calls to select the correct I/O
accessor, that is fine of course.
-- 
Florian