diff options
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | 2009-06-16 15:34:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 19:47:59 -0700 |
| commit | 34308fd4a22b4c24f54951e47d14e6ae5de6e150 (patch) | |
| tree | b5582079e5c53baf899d4fb1b8c523888dcc31ed | |
| parent | 24f01dcb53a950999f42f55123f7bc4ccda4ca57 (diff) | |
acornfb: remove fb_mmap function
The driver's fb_mmap function is essentially the same as a generic fb_mmap
function. Delete driver's function and use the generic one.
A difference is that generic function marks frame buffer memory as VM_IO |
VM_RESERVED. The driver's function marks it as VM_IO only.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/acornfb.c | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c index 6995fe1e86d4..0bcc59eb37fa 100644 --- a/drivers/video/acornfb.c +++ b/drivers/video/acornfb.c @@ -859,43 +859,6 @@ acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) return 0; } -/* - * Note that we are entered with the kernel locked. - */ -static int -acornfb_mmap(struct fb_info *info, struct vm_area_struct *vma) -{ - unsigned long off, start; - u32 len; - - off = vma->vm_pgoff << PAGE_SHIFT; - - start = info->fix.smem_start; - len = PAGE_ALIGN(start & ~PAGE_MASK) + info->fix.smem_len; - start &= PAGE_MASK; - if ((vma->vm_end - vma->vm_start + off) > len) - return -EINVAL; - off += start; - vma->vm_pgoff = off >> PAGE_SHIFT; - - /* This is an IO map - tell maydump to skip this VMA */ - vma->vm_flags |= VM_IO; - - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - - /* - * Don't alter the page protection flags; we want to keep the area - * cached for better performance. This does mean that we may miss - * some updates to the screen occasionally, but process switches - * should cause the caches and buffers to be flushed often enough. - */ - if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot)) - return -EAGAIN; - return 0; -} - static struct fb_ops acornfb_ops = { .owner = THIS_MODULE, .fb_check_var = acornfb_check_var, @@ -905,7 +868,6 @@ static struct fb_ops acornfb_ops = { .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, - .fb_mmap = acornfb_mmap, }; /* |