Re: [uml-devel] Loopback mounting jffs2 under UML?

[Geert Uytterhoeven <geert@linux-m68k.org>]

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On Tue, 18 Dec 2007, Rob Landley wrote:
> On Tuesday 18 December 2007 13:29:11 Jeff Dike wrote:
> > On Tue, Dec 18, 2007 at 12:45:23PM -0600, Rob Landley wrote:
> > > There's a way to make a loopback device look like a flash device, letting
> > > you loopback mount jffs2, but it involves recompiling the kerenel to add
> > > support for it, and of course I went "User Mode Linux"...  Except
> > > that UML disables  the flash menu entirely.
> > >
> > > Suggestions?
> >
> > I see this in menuconfig:
> >
> > Symbol: MTD [=n]

> Actually, in -rc4 (what I have lying around), the depends is just on HAS_IOMEM, and the include in arch/um/Kconfig is guarded by "if BROKEN".

> >   CC      drivers/mtd/chips/chipreg.o
> > In file included from drivers/mtd/chips/chipreg.c:13:
> > include/linux/mtd/map.h: In function ‘inline_map_read’:
> > include/linux/mtd/map.h:378: error: implicit declaration of function
> > ‘__raw_readb’ include/linux/mtd/map.h:380: error: implicit declaration of
> > function ‘__raw_readw’ include/linux/mtd/map.h:382: error: implicit
> > declaration of function ‘__raw_readl’ include/linux/mtd/map.h:385: error:
> > implicit declaration of function ‘__raw_readq’ include/linux/mtd/map.h:388:
> > error: implicit declaration of function ‘memcpy_fromio’
> > include/linux/mtd/map.h: In function ‘inline_map_write’:
> > include/linux/mtd/map.h:406: error: implicit declaration of function
> > ‘memcpy_toio’ make[3]: *** [drivers/mtd/chips/chipreg.o] Error 1
> > make[2]: *** [drivers/mtd/chips] Error 2
> > make[1]: *** [drivers/mtd] Error 2

Protect all static inline routines in <linux/mtd/map.h> that use readb()
and friends by #ifdef CONFIG_HAS_IOMEM?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

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