Re: [PATCH][RESEND] Cleanup (BIN|BCD)_TO_(BCD|BIN) usage/macros

From: Jeff Garzik (
Date: Tue Sep 17 2002 - 13:39:59 EST

Tom Rini wrote:
> Right now there's a bit of a mess with all of the BIN_TO_BCD/BCD_TO_BIN
> macros in the kernel. It's defined in a half dozen places, and worse
> yet, not all places use them the same way. Most users do something
> like:
> if ( ... )
> BIN_TO_BCD(x);
> But in a few places, it's used as:
> if ( ... )
> y = BIN_TO_BCD(x);
> The following creates include/linux/bcd.h which has the 'normal'
> BIN_TO_BCD macros, as well as CONVERT_{BIN,BCD}_TO_{BCD,BIN},
> which are for the second case.

hmmm... removing all the private definitions certainly makes good sense,
but having both CONVERT_foo and foo seems a bit wonky...

IMO it would be better to have BIN_TO_BCD which returns a value, and
__BIN_TO_BCD which has side effects but returns no value...


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