fb-defio: If FBINFO_VIRTFB is defined, do not set VM_IO flag.
Most users (except sh_mobile_lcdcfb.c) get their framebuffer from
vmalloc. Setting VM_IO is not necessary as the memory obtained
from vmalloc is System RAM type and is not susceptible to PCI memory
constraints.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
diff --git a/drivers/video/fb_defio.c b/drivers/video/fb_defio.c
index 0a7a667..875d019 100644
--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -144,7 +144,9 @@
static int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
vma->vm_ops = &fb_deferred_io_vm_ops;
- vma->vm_flags |= ( VM_IO | VM_RESERVED | VM_DONTEXPAND );
+ vma->vm_flags |= ( VM_RESERVED | VM_DONTEXPAND );
+ if (!(info->flags & FBINFO_VIRTFB))
+ vma->vm_flags |= VM_IO;
vma->vm_private_data = info;
return 0;
}