lkml.org 
[lkml]   [2018]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 02/13] udmabuf: improve map_udmabuf error handling
Date
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/dma-buf/udmabuf.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index 155050c741..0d03367c57 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -51,25 +51,24 @@ static struct sg_table *map_udmabuf(struct dma_buf_attachment *at,
{
struct udmabuf *ubuf = at->dmabuf->priv;
struct sg_table *sg;
+ int ret;

sg = kzalloc(sizeof(*sg), GFP_KERNEL);
if (!sg)
- goto err1;
- if (sg_alloc_table_from_pages(sg, ubuf->pages, ubuf->pagecount,
- 0, ubuf->pagecount << PAGE_SHIFT,
- GFP_KERNEL) < 0)
- goto err2;
+ return ERR_PTR(-ENOMEM);
+ ret = sg_alloc_table_from_pages(sg, ubuf->pages, ubuf->pagecount,
+ 0, ubuf->pagecount << PAGE_SHIFT,
+ GFP_KERNEL);
+ if (ret < 0)
+ goto err;
if (!dma_map_sg(at->dev, sg->sgl, sg->nents, direction))
- goto err3;
-
+ goto err;
return sg;

-err3:
+err:
sg_free_table(sg);
-err2:
kfree(sg);
-err1:
- return ERR_PTR(-ENOMEM);
+ return ERR_PTR(ret);
}

static void unmap_udmabuf(struct dma_buf_attachment *at,
--
2.9.3
\
 
 \ /
  Last update: 2018-09-11 15:44    [W:0.027 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site