Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[cascardo/linux.git] / drivers / media / v4l2-core / videobuf-dma-sg.c

diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index f300f06..1db0af6 100644 (file)
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -156,6 +156,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
 {
        unsigned long first, last;
        int err, rw = 0;
+       unsigned int flags = FOLL_FORCE;
 
        dma->direction = direction;
        switch (dma->direction) {
@@ -178,12 +179,14 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
        if (NULL == dma->pages)
                return -ENOMEM;
 
+       if (rw == READ)
+               flags |= FOLL_WRITE;
+
        dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n",
                data, size, dma->nr_pages);
 
        err = get_user_pages(data & PAGE_MASK, dma->nr_pages,
-                            rw == READ, 1, /* force */
-                            dma->pages, NULL);
+                            flags, dma->pages, NULL);
 
        if (err != dma->nr_pages) {
                dma->nr_pages = (err >= 0) ? err : 0;