1 files changed, 35 insertions, 0 deletions
diff --git a/meta-rcar-gen3/recipes-kernel/kernel-module-mmngr/kernel-module-mmngrbuf/0001-mmngr_drv-mmngrbuf-Take-care-of-any-migration-of-sca.patch b/meta-rcar-gen3/recipes-kernel/kernel-module-mmngr/kernel-module-mmngrbuf/0001-mmngr_drv-mmngrbuf-Take-care-of-any-migration-of-sca.patch
new file mode 100644
index 0000000..7e5ca0a
--- /dev/null
+++ b/meta-rcar-gen3/recipes-kernel/kernel-module-mmngr/kernel-module-mmngrbuf/0001-mmngr_drv-mmngrbuf-Take-care-of-any-migration-of-sca.patch
@@ -0,0 +1,35 @@
+From 43d2cc7496340eea3f96cb3c3cf66139e0878f3c Mon Sep 17 00:00:00 2001
+From: Hai Nguyen Pham <hai.pham.ud@renesas.com>
+Date: Tue, 26 Mar 2019 15:56:30 +0700
+Subject: [PATCH] mmngr_drv: mmngrbuf: Take care of any migration of
+ scatterlist
+
+MMNGRBUF should take care of any migration of scatterlist for
+all (shared) users of the DMA buffer. Although we only care about
+DMA addresses at the moment, this will benefit the DRM system that
+uses the buffer allocated by MMNGR directly.
+
+Initialize the scatterlist entry so that it can be happily traversed.
+
+Signed-off-by: Hai Nguyen Pham <hai.pham.ud@renesas.com>
+---
+ mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c b/mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c
+index fe3db08..d9189e9 100644
+--- a/mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c
++++ b/mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c
+@@ -256,6 +256,9 @@ static struct sg_table *dmabuf_map_dma_buf(struct dma_buf_attachment *attach,
+ 		return NULL;
+ 	}
+ 
++	sg_set_page(sgt->sgl, pfn_to_page(PFN_DOWN(priv->hard_addr)),
++		    priv->size, offset_in_page(priv->hard_addr));
++
+ 	sg_dma_address(sgt->sgl) = priv->hard_addr;
+ 	sg_dma_len(sgt->sgl) = priv->size;
+ 
+-- 
+2.7.4
+