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-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0314-dma-direct-Temporary-DMA-fix-on-arm64.patch23
1 files changed, 23 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0314-dma-direct-Temporary-DMA-fix-on-arm64.patch b/target/linux/bcm27xx/patches-5.4/950-0314-dma-direct-Temporary-DMA-fix-on-arm64.patch
new file mode 100644
index 0000000000..327a77c424
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0314-dma-direct-Temporary-DMA-fix-on-arm64.patch
@@ -0,0 +1,23 @@
+From afde0ffa449eef528deb2fe455a512acd0569be4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+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 <phil@raspberrypi.org>
+---
+ 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);
+