From f3c4b1341e8320e63f197a554fc5a25686a11d22 Mon Sep 17 00:00:00 2001
From: Claire Chang <tientzu@chromium.org>
Date: Fri, 27 Aug 2021 11:48:02 +0800
Subject: [PATCH] swiotlb: use depends on for DMA_RESTRICTED_POOL
Git-commit: f3c4b1341e8320e63f197a554fc5a25686a11d22
Patch-mainline: v5.15-rc1
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
kernel/dma/Kconfig | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 3e961dc39634..d19f9fef4ab9 100644
--- 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
--
2.26.2