fbdev/ps3fb: use vm_iomap_memory()

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@ti.com>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>

1 files changed, 6 insertions, 12 deletions

diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 920c27bf3947..d9f08c653d62 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -705,21 +705,15 @@ static int ps3fb_pan_display(struct fb_var_screeninfo *var,
 
 static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 {
-        unsigned long size, offset;
+        int r;
 
-        size = vma->vm_end - vma->vm_start;
-        offset = vma->vm_pgoff << PAGE_SHIFT;
-        if (offset + size > info->fix.smem_len)
-                return -EINVAL;
-
-        offset += info->fix.smem_start;
-        if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
-                            size, vma->vm_page_prot))
-                return -EAGAIN;
+        r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
 
         dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
-                offset, vma->vm_start);
-        return 0;
+                info->fix.smem_start + vma->vm_pgoff << PAGE_SHIFT,
+                vma->vm_start);
+
+        return r;
 }
 
     /*