[U-Boot-Users] [PATCH v2] PPC4xx: Simplified post_word_{load, store}

Wolfgang Denk wd at denx.de
Wed May 21 22:17:23 CEST 2008


In message <1211398998-30954-1-git-send-email-gerickson at nuovations.com> you wrote:
> This patch simplifies post_word_{load,store} by using the preprocessor 
> to eliminate redundant, copy-and-pasted code.
...

> +#if defined(CFG_POST_WORD_ADDR)
> +# define _POST_ADDR	(CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR)

Please make this

# define _POST_ADDR ((CFG_OCM_DATA_ADDR) + (CFG_POST_WORD_ADDR))

This *is* important. Assume 

	#define	CFG_OCM_DATA_ADDR	8 | 1
	#define CFG_POST_WORD_ADDR	16 | 3

Then ((CFG_OCM_DATA_ADDR) + (CFG_POST_WORD_ADDR)) gives 28 as
intended, but (CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR) gives 27.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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