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-rw-r--r--sys-kernel/linux-sources-redcore/files/dma_coherent_ok-logic.patch12
1 files changed, 12 insertions, 0 deletions
diff --git a/sys-kernel/linux-sources-redcore/files/dma_coherent_ok-logic.patch b/sys-kernel/linux-sources-redcore/files/dma_coherent_ok-logic.patch
new file mode 100644
index 00000000..19e01d57
--- /dev/null
+++ b/sys-kernel/linux-sources-redcore/files/dma_coherent_ok-logic.patch
@@ -0,0 +1,12 @@
+diff -Naur linux-4.16.2/lib/swiotlb.c linux-4.16.2-p/lib/swiotlb.c
+--- linux-4.16.2/lib/swiotlb.c 2018-04-12 12:30:01.000000000 +0200
++++ linux-4.16.2-p/lib/swiotlb.c 2018-04-12 18:01:27.122073379 +0200
+@@ -732,7 +732,7 @@
+ goto out_warn;
+
+ *dma_handle = swiotlb_phys_to_dma(dev, phys_addr);
+- if (dma_coherent_ok(dev, *dma_handle, size))
++ if (!dma_coherent_ok(dev, *dma_handle, size))
+ goto out_unmap;
+
+ memset(phys_to_virt(phys_addr), 0, size);