> static int mmap_udmabuf(struct dma_buf *buf, struct vm_area_struct *vma)
> {
> struct udmabuf *ubuf = buf->priv;
> + pgprot_t pgprot = vm_get_page_prot(vma->vm_flags);
>
> if ((vma->vm_flags & (VM_SHARED | VM_MAYSHARE)) == 0)
> return -EINVAL;
>
> + if (ubuf->flags & UDMABUF_FLAGS_PROT_NONE)
> + return -EINVAL;
> +
> + if ((ubuf->flags & UDMABUF_FLAGS_PROT_READ) == 0)
"if ((vma->vm_flags & VM_READ) == 0)" ?
cheers,
Gerd
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