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From be1ce185051b49ae471dbf9d3a5a90df5633aa98 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>
---
.../mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
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 778bb69..7496dbf 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
@@ -1,7 +1,7 @@
/*************************************************************************/ /*
MMNGR
- Copyright (C) 2015-2016 Renesas Electronics Corporation
+ Copyright (C) 2015-2019 Renesas Electronics Corporation
License Dual MIT/GPLv2
@@ -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
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