[U-Boot] [PATCH v2 13/22] omap4: add clock support
Wolfgang Denk
wd at denx.de
Sat Jun 25 15:05:44 CEST 2011
Dear Aneesh V,
In message <4E05CF18.4020800 at ti.com> you wrote:
>
> > It's more. When using base+offset, the compiler will know nothing
> > about the data type, so it canot warn you if you use a 32 bit accessor
> > on a 8 bit register, or vice versa. When you pass a struct element,
> > it can check type information.
>
> Is this really valid in our context? readl()/writel() and friends just
> cast the address to the target type pointer. I tried writeb() on my 32
> bit register represented using the struct approach and the compiler
> didn't give any warning (as expected)!
Yes, we should fix the I/O accessors definitons on ARM to provide
strict type checking.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
The software required `Windows 95 or better', so I installed Linux.
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