Messages in this thread | | | Date | Tue, 12 Jan 2010 19:45:02 +1000 | From | Greg Ungerer <> | Subject | Re: [PATCH] m68knommu: change definitions of __pa() and __va() |
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On 01/12/2010 05:02 PM, Greg Ungerer wrote: > Linus Torvalds wrote: >> On Tue, 12 Jan 2010, Greg Ungerer wrote: >>> +#else >>> +#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT) >>> +#define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT) >>> +#endif >> >> Ok, so the old ones were total crap too, but when moving things >> around, don't just copy the crap like this. >> >> Look at those two #define's for five seconds, and ask yourself what is >> wrong with them. Those macros are not good. > > Ok. Easily fixed. > > page_to_bus() doesn't even look like it is used anywhere (and m68k > itself doesn't define it). So I'll remove it. > > I propose changing page_to_phys() to be: > > #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
Hmmm, on second thoughts maybe that change is better left for the next merge window. Perhaps best to just fix that arg bracketization now?
> Which seems consistent with many other arches. (And it works on > m68knommu too :-) > > I'll generate a new patch with that changed. > > A quick grep shows page_to_phys() defined this way in a couple of > other places too: > > h8300/include/asm/io.h > sparc/include/asm/io_32.h
Strike that, only the h8300 one needs arg fixing.
Regards Greg
------------------------------------------------------------------------ Greg Ungerer -- Principal Engineer EMAIL: gerg@snapgear.com SnapGear Group, McAfee PHONE: +61 7 3435 2888 8 Gardner Close, FAX: +61 7 3891 3630 Milton, QLD, 4064, Australia WEB: http://www.SnapGear.com
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