ENGR00236137 mx6sl: csi: Change video buffer access mode to writecombine

Change buffer access mode from noncached to writecombine for better
performance.

Signed-off-by: Robby Cai <R63905@freescale.com>

diff --git a/drivers/media/video/mxc/capture/csi_v4l2_capture.c b/drivers/media/video/mxc/capture/csi_v4l2_capture.c
index 6cf06c47f9968c90e64c96be0e1fc13341b912da..74266b0367a829b2e86de4aa926a8a7dee376389 100644 (file)
--- a/drivers/media/video/mxc/capture/csi_v4l2_capture.c
+++ b/drivers/media/video/mxc/capture/csi_v4l2_capture.c
@@ -1428,7 +1428,7 @@ static int csi_mmap(struct file *file, struct vm_area_struct *vma)
                return -EINTR;
 
        size = vma->vm_end - vma->vm_start;
-       vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+       vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 
        if (remap_pfn_range(vma, vma->vm_start,
                            vma->vm_pgoff, size, vma->vm_page_prot)) {