mirror of
https://github.com/Ysurac/openmptcprouter.git
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28 lines
914 B
Diff
28 lines
914 B
Diff
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From e6bef7f1fafb6b0f69c2194821d93b3244dd5c0a Mon Sep 17 00:00:00 2001
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From: Andrei Gherzan <andrei@balena.io>
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Date: Tue, 16 Jul 2019 13:28:22 +0100
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Subject: [PATCH] arm64/mm: Limit the DMA zone for arm64
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On RaspberryPi, only the first 1Gb can be used for DMA[1].
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[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-July/665986.html
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Signed-off-by: Andrei Gherzan <andrei@balena.io>
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---
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arch/arm64/mm/init.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
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index 774c3e17c7982..75006fa076a01 100644
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--- a/arch/arm64/mm/init.c
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+++ b/arch/arm64/mm/init.c
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@@ -475,7 +475,7 @@ void __init arm64_memblock_init(void)
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/* 4GB maximum for 32-bit only capable devices */
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if (IS_ENABLED(CONFIG_ZONE_DMA32))
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- arm64_dma_phys_limit = max_zone_dma_phys();
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+ arm64_dma_phys_limit = 0x40000000;
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else
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arm64_dma_phys_limit = PHYS_MASK + 1;
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