Re: [PATCHv3 2/3] net: smc91x: do not use readw()/writew() on ColdFire platforms

[Arnd Bergmann]

On Mon, Sep 7, 2026, at 15:37, Greg Ungerer wrote:
> Modify the access macros and functions used to access the smsc hardware
> registers when used on ColdFire SoC platforms so they do not use readw()
> or writew(), or derived functions like ioread16be() and iowrite16be().
>
> The current set of readX()/writeX() access methods for ColdFire have
> historically been non-standard, in that they mostly access memory
> big-endian instead of the expected little-endian. Before fixing the
> ColdFire readX() and writeX() supporting code to properly work with
> little-endian data existing driver uses need to be fixed. Convert the
> smsc driver ColdFire uses of these to use the raw access macros - which
> are well defined to be (native) big-endian on ColdFire. This change
> requires some byte swapping at time of access to retain existing correct
> behavior.
>
> Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>