drivers/char/rtc.c compile failure in current 2.4 BitKeeper tree:

From: Chris Siebenmann
Date: Mon Dec 01 2003 - 19:02:21 EST

I'm compiling for SMP x86 and getting:
make[3]: Entering directory `/homes/hawkwind/u0/cks/sys/linux-BK/drivers/char'
gcc -D__KERNEL__ -I/homes/hawkwind/u0/cks/sys/linux-BK/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686 -nostdinc -iwithprefix include -DKBUILD_BASENAME=rtc -c -o rtc.o rtc.c
rtc.c: In function `rtc_init':
rtc.c:772: `RTC_IOMAPPED' undeclared (first use in this function)
rtc.c:772: (Each undeclared identifier is reported only once
rtc.c:772: for each function it appears in.)
rtc.c:773: `RTC_IO_EXTENT' undeclared (first use in this function)
rtc.c: In function `rtc_exit':
rtc.c:873: `RTC_IOMAPPED' undeclared (first use in this function)
rtc.c:874: `RTC_IO_EXTENT' undeclared (first use in this function)
make[3]: *** [rtc.o] Error 1

It looks like the MIPS changes require these to be defined in
include/asm-*/mc146818rtc.h (or included files) for all architectures
(previously RTC_IO_EXTENT was defined in rtc.c and RTC_IOMAPPED didn't
exist), but only MIPS has been updated to do this. From looking at the
diffs to rtc.c, it looks like the correct additions are just:

#define RTC_IO_EXTENT 0x10 /* Only really two ports, but... */
#define RTC_IOMAPPED 0

- cks
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