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-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0725-udmabuf-use-cache_sgt_mapping-option.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0725-udmabuf-use-cache_sgt_mapping-option.patch b/target/linux/bcm27xx/patches-5.4/950-0725-udmabuf-use-cache_sgt_mapping-option.patch
new file mode 100644
index 0000000000..166055556f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0725-udmabuf-use-cache_sgt_mapping-option.patch
@@ -0,0 +1,35 @@
+From d57aecba0cd291e0c28e2c82c3d4bce06c5b5b94 Mon Sep 17 00:00:00 2001
+From: Gurchetan Singh <gurchetansingh@chromium.org>
+Date: Mon, 2 Dec 2019 17:36:24 -0800
+Subject: [PATCH] udmabuf: use cache_sgt_mapping option
+
+Commit bc7a71da43b48333f84c6534ab43d240e34cf9eb uptream.
+
+The GEM prime helpers do it, so should we. It's also possible to make
+it optional later.
+
+Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
+Link: http://patchwork.freedesktop.org/patch/msgid/20191203013627.85991-1-gurchetansingh@chromium.org
+Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
+---
+ drivers/dma-buf/udmabuf.c | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+--- a/drivers/dma-buf/udmabuf.c
++++ b/drivers/dma-buf/udmabuf.c
+@@ -94,10 +94,11 @@ static void release_udmabuf(struct dma_b
+ }
+
+ static const struct dma_buf_ops udmabuf_ops = {
+- .map_dma_buf = map_udmabuf,
+- .unmap_dma_buf = unmap_udmabuf,
+- .release = release_udmabuf,
+- .mmap = mmap_udmabuf,
++ .cache_sgt_mapping = true,
++ .map_dma_buf = map_udmabuf,
++ .unmap_dma_buf = unmap_udmabuf,
++ .release = release_udmabuf,
++ .mmap = mmap_udmabuf,
+ };
+
+ #define SEALS_WANTED (F_SEAL_SHRINK)