fix incorrect return of error when mmapping entire buffer

diff --git a/comedi/comedi_fops.c b/comedi/comedi_fops.c
index 5095cfd4587de3f3d5fb39e6c14867eafd8b7785..ff92eebcc62119e671fe7c22d80af723b2d3bd61 100644 (file)
--- a/comedi/comedi_fops.c
+++ b/comedi/comedi_fops.c
@@ -1258,7 +1258,7 @@ static int comedi_mmap_v22(struct file * file, struct vm_area_struct *vma)
 #endif
 
        size = vma->vm_end - vma->vm_start;
-       if(size>=async->prealloc_bufsz)
+       if(size>async->prealloc_bufsz)
                return -EFAULT;
        if(size&(~PAGE_MASK))
                return -EFAULT;