[U-Boot] Checkpatch warnings for "volatile"

[Wolfgang Denk]

Dear Jason,

In message <20111014131245.GF7102 at titan.lakedaemon.net> you wrote:
> 
> 	1.) checkpatch.pl complained about volatile in source.c:312.  This is
>        a register we bitbang in a loop and we don't want the compiler
>        optimizing it out.

This would, in almost all cases, trigger a NAK due to the fact that
device register accesses should be done through I/O accesors, and
never through volatile pointers.

Best regards,

Wolfgang Denk

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