linux-kernel - [PATCH 4/9] arm64: dma-mapping: export symbol arch_setup_dma

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Date:   Wed, 11 Oct 2017 18:34:24 -0400
From:   Jim Quinlan <jim2101024@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...ux-mips.org,
        devicetree@...r.kernel.org, linux-pci@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        Kevin Cernekee <cernekee@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Jim Quinlan <jim2101024@...il.com>
Subject: [PATCH 4/9] arm64: dma-mapping: export symbol arch_setup_dma_ops

The BrcmSTB driver needs to get ahold of a pointer to swiotlb_dma_ops.
However, that variable is defined as static.  Instead, we use
arch_setup_dma_ops() to get the pointer to swiotlb_dma_ops.  Since
we also want our driver to be a separate module, we need to
export this function.

Signed-off-by: Jim Quinlan <jim2101024@...il.com>
---
 arch/arm64/mm/dma-mapping.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 614af88..dae572f 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -936,3 +936,4 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 	}
 #endif
 }
+EXPORT_SYMBOL(arch_setup_dma_ops);
-- 
1.9.0.138.g2de3478