Messages in this thread | | | Date | Thu, 02 Feb 2012 10:11:02 +0100 | From | Richard Weinberger <> | Subject | Re: [PATCH] MTD: Refine HAS_IOMEM dependency |
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On 02.02.2012 10:07, Artem Bityutskiy wrote: > On Wed, 2012-01-25 at 18:21 +0100, Richard Weinberger wrote: >> Making the entire mtd subsystem depend on HAS_IOMEM is a bit overkill. >> HAS_IOMEM is only needed for real devices drivers. >> nandsim and friends are perfectly usable on systems without IO memory. >> >> I'm my case I'm using nandsim on UML to do some UBI and JFFS2 development. >> >> Signed-off-by: Richard Weinberger<richard@nod.at> > > Could you please work on this patch some more and make sure it does not > break s390 build (it does now).
Sure!
> Download the s390 cross-compiler from here: > http://kernel.org/pub/tools/crosstool/files/bin/ > > I used this one: > http://kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.0/x86_64-gcc-4.6.0-nolibc_s390x-linux.tar.bz2 > > I built the kernel with arch/s390/defconfig - it is out of date a bit, > but the kernel compiles with it. > > Then I applied your patch and enabled all the available MTD options and > failed to build it. I've attached this .config file. Here is the command > line I used to build the kernel for s390x: > > $ make ARCH=s390 CROSS_COMPILE=s390x-linux- > O=/home/dedekind/space/kernel-builds/l2-mtd-s390 -j16 > > The .config was put to /home/dedekind/space/kernel-builds/l2-mtd-s390, > obviously, and the path to the s390x-linux-* tools were in my PATH > environment variable. > > There many errors, here is just one example: > > make[4]: *** [drivers/mtd/lpddr/lpddr_cmds.o] Error 1 > /home/dedekind/git/l2-mtd/include/linux/mtd/map.h:407:3: error: implicit declaration of function 'memcpy_fromio' [-Werror=implicit-function-declaration] > make[3]: *** [drivers/mtd/lpddr] Error 2 > make[3]: *** Waiting for unfinished jobs....
Okay, S390 does not have memcpy_fromio(). :-\
Thanks, //richard
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