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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-04-17 13:55:59 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-04-24 08:41:41 +0300 |
| commit | 51fc8e8aabf1dc89934743c62069acbbe2016fe9 (patch) | |
| tree | 45bc9454b259ff5a902cd8b5885464d4c18a316d | |
| parent | 7b3d1c82417b340c73e416db10770379291010ba (diff) | |
| download | op-kernel-dev-51fc8e8aabf1dc89934743c62069acbbe2016fe9.zip op-kernel-dev-51fc8e8aabf1dc89934743c62069acbbe2016fe9.tar.gz | |
fbdev/sa1100fb: 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>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | drivers/video/sa1100fb.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c index cfbde5e..f34c8586 100644 --- a/drivers/video/sa1100fb.c +++ b/drivers/video/sa1100fb.c @@ -556,7 +556,7 @@ static int sa1100fb_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; - unsigned long start, len, off = vma->vm_pgoff << PAGE_SHIFT; + unsigned long off = vma->vm_pgoff << PAGE_SHIFT; if (off < info->fix.smem_len) { vma->vm_pgoff += 1; /* skip over the palette */ @@ -564,19 +564,9 @@ static int sa1100fb_mmap(struct fb_info *info, fbi->map_dma, fbi->map_size); } - start = info->fix.mmio_start; - len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len); - - if ((vma->vm_end - vma->vm_start + off) > len) - return -EINVAL; - - off += start & PAGE_MASK; - vma->vm_pgoff = off >> PAGE_SHIFT; - vma->vm_flags |= VM_IO; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); + + return vm_iomap_memory(vma, info->fix.mmio_start, info->fix.mmio_len); } static struct fb_ops sa1100fb_ops = { |
