Messages in this thread | | | Date | Thu, 16 Mar 2000 14:00:45 -0600 | From | ejc <> | Subject | ioremap alignment question (kernel 2.2.13) |
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Greetings,
In working with a driver, I've discovered that if I ioremap() two addresses which are not page aligned and within the same 4k block of memory, doing a writel() to the remapped addresses generates a kernel "Unable to handle kernel paging request." I'm using kernel 2.2.13 for ARM, though "slightly" ;) modified.
Questions: - are there alignment requirements for ioremap()? - can you ioremap() the same location more than once?
Documentation/IO-mapping.txt didn't address this.
Pointers to documentation, comments, questions, etc. welcomed.
TIA,
Eli -- Eli Carter eli.carter@inet.com
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