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sh: dma: fix kconfig dependency for G2_DMA 

commit f477a538c1 upstream.

When G2_DMA is enabled and SH_DMA is disabled, it results in the following
Kbuild warning:

WARNING: unmet direct dependencies detected for SH_DMA_API
  Depends on [n]: SH_DMA [=n]
  Selected by [y]:
  - G2_DMA [=y] && SH_DREAMCAST [=y]

The reason is that G2_DMA selects SH_DMA_API without depending on or
selecting SH_DMA while SH_DMA_API depends on SH_DMA.

When G2_DMA was first introduced with commit 40f49e7ed7
("sh: dma: Make G2 DMA configurable."), this wasn't an issue since
SH_DMA_API didn't have such dependency, and this way was the only way to
enable it since SH_DMA_API was non-visible. However, later SH_DMA_API was
made visible and dependent on SH_DMA with commit d8902adcc1
("dmaengine: sh: Add Support SuperH DMA Engine driver").

Let G2_DMA depend on SH_DMA_API instead to avoid Kbuild issues.

Fixes: d8902adcc1 ("dmaengine: sh: Add Support SuperH DMA Engine driver")
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com>
Signed-off-by: Rich Felker <dalias@libc.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Necip Fazil Yildiran 2020-09-17 18:45:48 +03:00 committed by Greg Kroah-Hartman
parent 8a0b8e26f7
commit 4e1d17a1f7
1 changed files with 1 additions and 2 deletions
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3
arch/sh/drivers/dma/Kconfig
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@ -63,8 +63,7 @@ config PVR2_DMA
config G2_DMA
tristate "G2 Bus DMA support"
depends on SH_DREAMCAST
select SH_DMA_API
depends on SH_DREAMCAST && SH_DMA_API
help
This enables support for the DMA controller for the Dreamcast's
G2 bus. Drivers that want this will generally enable this on