On Mon, 11 Feb 2019, Christoph Hellwig wrote:
> Currently the sm501 mfd driver can be compiled without any dependencies,
> but through the use of dma_declare_coherent it really depends on
> having DMA and iomem support. Normally we don't explicitly require DMA
> support as we have stubs for it if on UML, but in this case the driver
> selects support for dma_declare_coherent and thus also requires
> memmap support. Guard this by an explicit dependency.
>
> Signed-off-by: Christoph Hellwig
> ---
> drivers/mfd/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index f461460a2aeb..f15f6489803d 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1066,6 +1066,7 @@ config MFD_SI476X_CORE
>
> config MFD_SM501
> tristate "Silicon Motion SM501"
> + depends on HAS_DMA
>---help---
> This is the core driver for the Silicon Motion SM501 multimedia
> companion chip. This device is a multifunction device which may
I would normally have taken this, but I fear it will conflict with
[PATCH 06/12]. For that reason, just take my:
Acked-by: Lee Jones
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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