On Thursday 04 June 2009 21:23:31 Daniel Mack wrote:
Is there any guarantee that such macros are never used on device registers and the like?
Well - how can I guarantee that? Anyway - the functions can be enhanced later to make them work with different types of memories. For now, they implement a working set of functions to allow ubifs (and probably other code as well) to be compiled and ran on ARMs.
Yes. I suggest that we just document that these functions (and the set_bit()... ones) don't implement any memory barriers/sync operations and therefore should be handled with care when used on IO registers etc (on platforms that need such barriers like PPC).
Best regards, Stefan
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