linux-kernel - Re: [PATCH 5/9] dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs

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Date:   Wed, 21 Sep 2016 09:21:32 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     dan.j.williams@...el.com, arnd@...db.de, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, tony@...mide.com
Subject: Re: [PATCH 5/9] dmaengine/ARM: omap-dma: Fix the DMAengine compile
 test on non OMAP configs

On Fri, Sep 16, 2016 at 11:33:20AM +0300, Peter Ujfalusi wrote:
> The DMAengine driver for omap-dma use three function calls from the
> plat-omap legacy driver. When the DMAengine driver is built when ARCH_OMAP
> is not set, the compilation will fail due to missing symbols.
> Add empty inline functions to allow the DMAengine driver to be compiled
> with COMPILE_TEST.

Peter,

This should be before you enable COMPILE_TEST otherwise build will break!

> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
>  include/linux/omap-dma.h | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/include/linux/omap-dma.h b/include/linux/omap-dma.h
> index 1d99b61adc65..290081620b3e 100644
> --- a/include/linux/omap-dma.h
> +++ b/include/linux/omap-dma.h
> @@ -297,6 +297,7 @@ struct omap_system_dma_plat_info {
>  #define dma_omap15xx()	__dma_omap15xx(d)
>  #define dma_omap16xx()	__dma_omap16xx(d)
>  
> +#if defined(CONFIG_ARCH_OMAP)
>  extern struct omap_system_dma_plat_info *omap_get_plat_info(void);
>  
>  extern void omap_set_dma_priority(int lch, int dst_port, int priority);
> @@ -355,4 +356,22 @@ static inline int omap_lcd_dma_running(void)
>  }
>  #endif
>  
> +#else /* CONFIG_ARCH_OMAP */
> +
> +static inline struct omap_system_dma_plat_info *omap_get_plat_info(void)
> +{
> +	return NULL;
> +}
> +
> +static inline int omap_request_dma(int dev_id, const char *dev_name,
> +			void (*callback)(int lch, u16 ch_status, void *data),
> +			void *data, int *dma_ch)
> +{
> +	return -ENODEV;
> +}
> +
> +static inline void omap_free_dma(int ch) { }
> +
> +#endif /* CONFIG_ARCH_OMAP */
> +
>  #endif /* __LINUX_OMAP_DMA_H */
> -- 
> 2.10.0
> 

-- 
~Vinod