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mfd/sm501: depend on HAS_DMA

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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 <hch@lst.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Christoph Hellwig 2019-02-03 20:11:53 +01:00
parent dc2acded38
commit d037739220
1 changed files with 1 additions and 0 deletions
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drivers/mfd/Kconfig
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@ -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