On 05/30/2013 10:01 PM, Guennadi Liakhovetski wrote:
> On platforms with no support for the shdma dmaengine driver build is
> currently failing with
>
> drivers/built-in.o: In function `sh_mobile_sdhi_probe':
> drivers/mmc/host/sh_mobile_sdhi.c:170: undefined reference to`shdma_chan_filter'
>
> Fix the breakage by defining shdma_chan_filter to NULL in such
> configurations.
>
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@xxxxxxxxx>
> ---
>
> v2: in "next" shdma_chan_filter() is defined in shdma-base.c, which is
> built if CONFIG_SH_DMAE_BASE is defined. This version uses the correct
> symbol.
>
> This is for "next." Compile-tested only. I'll test it on hardware next
> week, but I don't think it shall break anything.
>
> include/linux/sh_dma.h | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
> index b64d6be..1fd8a20 100644
> --- a/include/linux/sh_dma.h
> +++ b/include/linux/sh_dma.h
> @@ -99,6 +99,10 @@ struct sh_dmae_pdata {
> #define CHCR_TE 0x00000002
> #define CHCR_IE 0x00000004
>
> +#if IS_ENABLED(CONFIG_SH_DMAE_BASE)
> bool shdma_chan_filter(struct dma_chan *chan, void *arg);
> +#else
> +#define shdma_chan_filter NULL
OK I did not see a reply to my previous comment
Would this not be better as a
#else
static inline bool shdma_chan_filter(struct dma_chan *chan, void *arg) { return false; }
#endif
Otherwise runtime will call a NULL pointer
> +#endif
>
> #endif
--
------------------
Dan Murphy
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