Messages in this thread | | | Date | Wed, 26 Feb 2014 15:06:31 +0100 | From | Richard Weinberger <> | Subject | Re: [PATCH] pwm,renesas-tpu: Add dependency on HAS_IOMEM |
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Am 26.02.2014 13:08, schrieb Thierry Reding: > On Fri, Jan 31, 2014 at 01:45:18PM +0100, Richard Weinberger wrote: >> On archs like S390 or um this driver cannot build nor work. Make it depend on HAS_IOMEM to bypass build failures. >> >> drivers/built-in.o: In function `tpu_probe': drivers/pwm/pwm-renesas-tpu.c:421: undefined reference to `devm_ioremap_resource' >> >> Signed-off-by: Richard Weinberger <richard@nod.at> --- drivers/pwm/Kconfig | 1 + 1 file changed, 1 insertion(+) > > In the long run I think it might be better to add a dummy implementation for devm_ioremap_resource() in order to make it build properly even for architectures where it isn't > implemented.
And what should devm_ioremap_resource() or in general ioremap() do on archs without iomem? BUG()? Returning a random error and hoping that the driver handles it correctly? :)
IMHO such a dummy implementation does not make much sense.
> For now this looks like the best option. Applied, thanks.
Thanks!
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