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 <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Manuel Lauss <[email protected]> --- drivers/video/au1200fb.c | 26 +------------------------- 1 file changed, 1 insertion(+), 25 deletions(-) diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c index 1b59054..6ce6b83 100644 --- a/drivers/video/au1200fb.c +++ b/drivers/video/au1200fb.c @@ -1235,36 +1235,12 @@ static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi) static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) { - unsigned int len; - unsigned long start=0, off; struct au1200fb_device *fbdev = info->par; - if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { - return -EINVAL; - } - - start = fbdev->fb_phys & PAGE_MASK; - len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); - - off = vma->vm_pgoff << PAGE_SHIFT; - - if ((vma->vm_end - vma->vm_start + off) > len) { - return -EINVAL; - } - - off += start; - vma->vm_pgoff = off >> PAGE_SHIFT; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */ - vma->vm_flags |= VM_IO; - - return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); - - return 0; + return vm_iomap_memory(vma, fbdev->fb_phys, fbdev->fb_len); } static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
