1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/v4l2-core/videobuf-dma-contig.c b/drivers/media/v4l2-core/videobuf-dma-contig.c
index bf80f0f7dfb8..e02353e340dd 100644
--- a/drivers/media/v4l2-core/videobuf-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf-dma-contig.c
@@ -305,6 +305,15 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
         /* Try to remap memory */
         size = vma->vm_end - vma->vm_start;
         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+        /* the "vm_pgoff" is just used in v4l2 to find the
+         * corresponding buffer data structure which is allocated
+         * earlier and it does not mean the offset from the physical
+         * buffer start address as usual. So set it to 0 to pass
+         * the sanity check in vm_iomap_memory().
+         */
+        vma->vm_pgoff = 0;
+
         retval = vm_iomap_memory(vma, mem->dma_handle, size);
         if (retval) {
                 dev_err(q->dev, "mmap: remap failed with error %d. ",