Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxxxxxxx>
---
drivers/video/fb-puv3.c | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/drivers/video/fb-puv3.c b/drivers/video/fb-puv3.c
index 7d106f1f..27fc956 100644
--- a/drivers/video/fb-puv3.c
+++ b/drivers/video/fb-puv3.c
@@ -640,21 +640,9 @@ static int unifb_pan_display(struct fb_var_screeninfo *var,
int unifb_mmap(struct fb_info *info,
struct vm_area_struct *vma)
{
- unsigned long size = vma->vm_end - vma->vm_start;
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- unsigned long pos = info->fix.smem_start + offset;
-
- if (offset + size > info->fix.smem_len)
- return -EINVAL;
-
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- if (io_remap_pfn_range(vma, vma->vm_start, pos >> PAGE_SHIFT, size,
- vma->vm_page_prot))
- return -EAGAIN;
-
- /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
- return 0;
+ return vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
}
static struct fb_ops unifb_ops = {
--
1.7.10.4
--
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