From afde0ffa449eef528deb2fe455a512acd0569be4 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Wed, 25 Sep 2019 09:49:58 +0100 Subject: [PATCH] dma-direct: Temporary DMA fix on arm64 See: https://github.com/raspberrypi/linux/issues/3251 Signed-off-by: Phil Elwell --- kernel/dma/direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -398,7 +398,7 @@ int dma_direct_supported(struct device * if (IS_ENABLED(CONFIG_ZONE_DMA)) min_mask = DMA_BIT_MASK(ARCH_ZONE_DMA_BITS); else - min_mask = DMA_BIT_MASK(32); + min_mask = DMA_BIT_MASK(30); min_mask = min_t(u64, min_mask, (max_pfn - 1) << PAGE_SHIFT);