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fbdev/fb-puv3: use vm_iomap_memory()

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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: Guan Xuetao <gxt@mprc.pku.edu.cn>
This commit is contained in:
Tomi Valkeinen 2013-04-17 13:48:43 +03:00
parent 47f698a9f2
commit 7b3d1c8241
1 changed files with 1 additions and 13 deletions
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14
drivers/video/fb-puv3.c
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@ -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 = {