linux-kernel - [PATCH] iommu: SUN50I_IOMMU should depend on HAS

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Message-Id: <20200629121146.24011-1-geert@linux-m68k.org>
Date:   Mon, 29 Jun 2020 14:11:46 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Joerg Roedel <joro@...tes.org>, Maxime Ripard <maxime@...no.tech>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] iommu: SUN50I_IOMMU should depend on HAS_DMA

If NO_DMA=y (e.g. Sun-3 all{mod,yes}-config):

    drivers/iommu/dma-iommu.o: In function `iommu_dma_mmap':
    dma-iommu.c:(.text+0x92e): undefined reference to `dma_pgprot'

IOMMU_DMA must not be selected, unless HAS_DMA=y.

Hence fix this by making SUN50I_IOMMU depend on HAS_DMA.

Fixes: 4100b8c229b32835 ("iommu: Add Allwinner H6 IOMMU driver")
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/iommu/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 6dc49ed8377a5c12..b0f308cb7f7c2fc2 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -305,6 +305,7 @@ config ROCKCHIP_IOMMU
 
 config SUN50I_IOMMU
 	bool "Allwinner H6 IOMMU Support"
+	depends on HAS_DMA
 	depends on ARCH_SUNXI || COMPILE_TEST
 	select ARM_DMA_USE_IOMMU
 	select IOMMU_API
-- 
2.17.1