Re: [PATCH] spi: core: Protect DMA code by #ifdef CONFIG_HAS_DMA

[Mark Brown]

On Fri, May 02, 2014 at 06:29:34AM +0200, Geert Uytterhoeven wrote:
> If NO_DMA=y:
> 
> drivers/built-in.o: In function `spi_map_buf':
> spi.c:(.text+0x21bc60): undefined reference to `dma_map_sg'
> drivers/built-in.o: In function `spi_unmap_buf.isra.33':
> spi.c:(.text+0x21c32e): undefined reference to `dma_unmap_sg'
> make[3]: *** [vmlinux] Error 1

Ugh.  It would seem better to have these functions stubbed out.  But
applied anyway.

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