diff options
| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-04-18 04:50:44 (GMT) |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-04-24 05:41:42 (GMT) |
| commit | c84deb9d615c02993ce0972a0b34585c7624822f (patch) | |
| tree | 3663ec0b35a39adc0dda8426deee2bc0e43b212a /drivers | |
| parent | 5171774382959f9a42ecd36bf408f6979effcb6a (diff) | |
| download | linux-c84deb9d615c02993ce0972a0b34585c7624822f.tar.xz | |
fbdev/sgivwfb: 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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/sgivwfb.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/video/sgivwfb.c b/drivers/video/sgivwfb.c index 2331fad..b2a8912 100644 --- a/drivers/video/sgivwfb.c +++ b/drivers/video/sgivwfb.c @@ -705,23 +705,17 @@ static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green, static int sgivwfb_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; + int r; - if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) - return -EINVAL; - if (offset + size > sgivwfb_mem_size) - return -EINVAL; - offset += sgivwfb_mem_phys; pgprot_val(vma->vm_page_prot) = - pgprot_val(vma->vm_page_prot) | _PAGE_PCD; - vma->vm_flags |= VM_IO; - if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT, - size, vma->vm_page_prot)) - return -EAGAIN; + pgprot_val(vma->vm_page_prot) | _PAGE_PCD; + + r = vm_iomap_memory(vma, sgivwfb_mem_phys, sgivwfb_mem_size); + printk(KERN_DEBUG "sgivwfb: mmap framebuffer P(%lx)->V(%lx)\n", offset, vma->vm_start); - return 0; + + return r; } int __init sgivwfb_setup(char *options) |