linux-kernel - [PATCH] dma: Per-NUMA-node CMA should depend on NUMA

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Message-Id: <74b66725883f065eb7d156f866678abb5be934bd.1603714996.git.robin.murphy@arm.com>
Date:   Mon, 26 Oct 2020 12:24:35 +0000
From:   Robin Murphy <robin.murphy@....com>
To:     hch@....de
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        song.bao.hua@...ilicon.com
Subject: [PATCH] dma: Per-NUMA-node CMA should depend on NUMA

Offering DMA_PERNUMA_CMA to non-NUMA configs is pointless.

Signed-off-by: Robin Murphy <robin.murphy@....com>
---
 kernel/dma/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index c99de4a21458..964b74c9b7e3 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -125,7 +125,8 @@ if  DMA_CMA
 
 config DMA_PERNUMA_CMA
 	bool "Enable separate DMA Contiguous Memory Area for each NUMA Node"
-	default NUMA && ARM64
+	depends on NUMA
+	default ARM64
 	help
 	  Enable this option to get pernuma CMA areas so that devices like
 	  ARM64 SMMU can get local memory by DMA coherent APIs.
-- 
2.28.0.dirty