[src/trunk]: src/sys/external/bsd/drm2/include/linux Remove broken drm2 vm_mm...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/db0b8133b30f
branches:  trunk
changeset: 807649:db0b8133b30f
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Fri Apr 17 15:02:50 2015 +0000

description:
Remove broken drm2 vm_mmap stub.  Can't possibly have ever worked.

diffstat:

 sys/external/bsd/drm2/include/linux/mm.h |  59 +++----------------------------
 1 files changed, 7 insertions(+), 52 deletions(-)

diffs (87 lines):

diff -r 5ce5e491d3c7 -r db0b8133b30f sys/external/bsd/drm2/include/linux/mm.h
--- a/sys/external/bsd/drm2/include/linux/mm.h  Fri Apr 17 13:43:55 2015 +0000
+++ b/sys/external/bsd/drm2/include/linux/mm.h  Fri Apr 17 15:02:50 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mm.h,v 1.4 2014/12/14 23:48:58 chs Exp $       */
+/*     $NetBSD: mm.h,v 1.5 2015/04/17 15:02:50 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -32,18 +32,12 @@
 #ifndef _LINUX_MM_H_
 #define _LINUX_MM_H_
 
-#include <sys/kauth.h>
-#include <sys/file.h>
-#include <sys/mman.h>
-#include <sys/proc.h>
-#include <sys/vnode.h>
-
-#include <miscfs/specfs/specdev.h>
-
 #include <uvm/uvm_extern.h>
 
 #include <asm/page.h>
 
+struct file;
+
 /* XXX Ugh bletch!  Whattakludge!  Linux's sense is reversed...  */
 #undef PAGE_MASK
 #define        PAGE_MASK       (~(PAGE_SIZE-1))
@@ -67,52 +61,13 @@
        /* XXX Fill in more as needed.  */
 }
 
-/*
- * ###################################################################
- * ############### XXX THIS NEEDS SERIOUS SCRUTINY XXX ###############
- * ###################################################################
- */
-
-/*
- * XXX unsigned long is a loser but will probably work accidentally.
- * XXX struct file might not map quite right between Linux and NetBSD.
- * XXX This is large enough it should take its own file.
- */
-
 static inline unsigned long
-vm_mmap(struct file *file, unsigned long base, unsigned long size,
-    unsigned long prot, unsigned long flags, unsigned long token)
+vm_mmap(struct file *file __unused, unsigned long base __unused,
+    unsigned long size __unused, unsigned long prot __unused,
+    unsigned long flags __unused, unsigned long token __unused)
 {
-       struct vnode *vp;
-       void *addr;
-       int error;
 
-       /*
-        * Cargo-culted from sys_mmap.  Various conditions kasserted
-        * rather than checked for expedience and safey.
-        */
-
-       KASSERT(base == 0);
-       KASSERT(prot == (PROT_READ | PROT_WRITE));
-       KASSERT(flags == MAP_SHARED);
-
-       KASSERT(file->f_type == DTYPE_VNODE);
-       vp = file->f_data;
-
-       KASSERT(vp->v_type == VCHR);
-       KASSERT((file->f_flag & (FREAD | FWRITE)) == (FREAD | FWRITE));
-
-       /* XXX pax_mprotect?  pax_aslr?  */
-
-       addr = NULL;
-       error = uvm_mmap_dev(curproc, &addr, size, vp->v_rdev, (off_t)base);
-       if (error)
-               goto out;
-
-       KASSERT((uintptr_t)addr <= -1024UL); /* XXX Kludgerosity!  */
-
-out:   /* XXX errno NetBSD->Linux (kludgerific) */
-       return (error? (-error) : (unsigned long)addr);
+       return -ENODEV;
 }
 
 #endif  /* _LINUX_MM_H_ */