[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>

diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index 4a271c7a2cf5710138797402a050aa0102559f30..cee1b5d29cfa0436f19bae5b0b547de44f423776 100644 (file)
--- 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;
 }