[alsa-devel] [PATCH] ASoC: Intel: Make sure we only build SST drivers on X86

[Mark Brown]

On Wed, Feb 19, 2014 at 02:06:24PM +0000, Liam Girdwood wrote:
> Disable build on non X86 architectures. This fixes the following build
> errors on PPC :-

> sound/soc/intel/sst-dsp.c: In function 'sst_dsp_outbox_write':
> sound/soc/intel/sst-dsp.c:218:2: error: implicit declaration of function 'memcpy_toio' [-Werror=implicit-function-declaration]
>   memcpy_toio(sst->mailbox.out_base, message, bytes);
>   ^

But lots of architectures do actually have these operations, I suspect
looking at some of the existing users depending on PCI is enough if
excessively strict (this will improve build coverage which tends to be
useful even if the driver can't be run).
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