[media] omap3isp: queue: Use sg_alloc_table_from_pages()

Replace the custom implementation with a call to the scatterlist helper
function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 2 insertions, 14 deletions

diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index 4a271c7a2cf5..cee1b5d29cfa 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -233,12 +233,10 @@ static void isp_video_buffer_cleanup(struct isp_video_buffer *buf)
  */
 static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf)
 {
-        struct scatterlist *sg;
         unsigned int offset;
         unsigned long data;
         unsigned int first;
         unsigned int last;
-        unsigned int i;
         int ret;
 
         data = buf->vbuf.m.userptr;
@@ -267,21 +265,11 @@ static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf)
         if (ret < 0)
                 return ret;
 
-        ret = sg_alloc_table(&buf->sgt, buf->npages, GFP_KERNEL);
+        ret = sg_alloc_table_from_pages(&buf->sgt, buf->pages, buf->npages,
+                                        offset, buf->vbuf.length, GFP_KERNEL);
         if (ret < 0)
                 return ret;
 
-        for (sg = buf->sgt.sgl, i = 0; i < buf->npages; ++i) {
-                if (PageHighMem(buf->pages[i])) {
-                        sg_free_table(&buf->sgt);
-                        return -EINVAL;
-                }
-
-                sg_set_page(sg, buf->pages[i], PAGE_SIZE - offset, offset);
-                sg = sg_next(sg);
-                offset = 0;
-        }
-
         return 0;
 }