[U-Boot] [PATCH 2/3] dnet: driver for Dave DNET ethernet controller

[Wolfgang Denk]

Dear Ilya Yanok,

In message <498A5F2F.1030603 at emcraft.com> you wrote:
> 
> > Please do not operate on base register plus magic offset - implement a
> > proper C structure instead to describe the controller hardware.
> 
> I've done as you requested but I'm really in doubt why do you like it?
> In the kernel offsets are preferred over C structures... And there is

With "in the kernel" you probaly mean "in the ARM architecture code of
the kernel". Compare for example PowerPC...

> nothing magical in offsets actually... we usually have offsets in specs
> not C structures...

Just to name one reason (but a very important one):  using  a  struct
allows for strict type checking by the compiler. If you use address +
offset  you  will  not  get  any  help from the compiler when you for
example read 8 bit from a register that must be accessed as a 32  bit
entity.

Best regards,

Wolfgang Denk

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