swiotlb: use depends on for DMA_RESTRICTED_POOL

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: 0b84e4f8b793 ("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>

diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 3e961dc..d19f9fe 100644 (file)
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -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