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swiotlb: use depends on for DMA_RESTRICTED_POOL

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Use depends on instead of select for DMA_RESTRICTED_POOL; otherwise it
will make SWIOTLB user configurable and cause compile errors for some
arch (e.g. mips).

Fixes: 0b84e4f8b7 ("swiotlb: Add restricted DMA pool initialization")
Acked-by: Will Deacon <will@kernel.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Claire Chang <tientzu@chromium.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Claire Chang 2021-08-27 11:48:02 +08:00 committed by Konrad Rzeszutek Wilk
parent f3cfd136ae
commit f3c4b1341e
1 changed files with 1 additions and 2 deletions
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3
kernel/dma/Kconfig
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@ -82,8 +82,7 @@ config SWIOTLB
config DMA_RESTRICTED_POOL
bool "DMA Restricted Pool"
depends on OF && OF_RESERVED_MEM
select SWIOTLB
depends on OF && OF_RESERVED_MEM && SWIOTLB
help
This enables support for restricted DMA pools which provide a level of
DMA memory protection on systems with limited hardware protection