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fbdev: fix check for fb_mmap's mmio availability

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Commit fc9bbca8f650e5f738af8806317c0a041a48ae4a (vm: convert fb_mmap to
vm_iomap_memory() helper) made fbmem.c use vm_iomap_memory, but also
accidentally removed the check for mmio's availability.

Add the check back.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen
2013-04-24 08:35:20 +03:00
parent 04f8afbec3
commit 138f296e14
1 changed files with 5 additions and 0 deletions
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5
drivers/video/fbmem.c
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@ -1398,6 +1398,11 @@ fb_mmap(struct file *file, struct vm_area_struct * vma)
len = info->fix.smem_len;
mmio_pgoff = PAGE_ALIGN((start & ~PAGE_MASK) + len) >> PAGE_SHIFT;
if (vma->vm_pgoff >= mmio_pgoff) {
if (info->var.accel_flags) {
mutex_unlock(&info->mm_lock);
return -EINVAL;
}
vma->vm_pgoff -= mmio_pgoff;
start = info->fix.mmio_start;
len = info->fix.mmio_len;