svn commit: r347620 - head/sys/compat/linuxkpi/common/include/asm

[Johannes Lundberg]

Author: johalun
Date: Wed May 15 17:04:12 2019
New Revision: 347620
URL: https://svnweb.freebsd.org/changeset/base/347620

Log:
  LinuxKPI: Update user_access_begin for Linux v5.0.
  
  Check the new LINUXKPI_VERSION macro for backwards compatibility.
  This patch is part of D19565
  
  Reviewed by:	hps
  Approved by:	imp (mentor), hps
  MFC after:	1 week

Modified:
  head/sys/compat/linuxkpi/common/include/asm/uaccess.h

Modified: head/sys/compat/linuxkpi/common/include/asm/uaccess.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/asm/uaccess.h	Wed May 15 16:59:04 2019	(r347619)
+++ head/sys/compat/linuxkpi/common/include/asm/uaccess.h	Wed May 15 17:04:12 2019	(r347620)
@@ -52,7 +52,11 @@ copy_from_user(void *to, const void *from, unsigned lo
 #define	__copy_from_user(...)	copy_from_user(__VA_ARGS__)
 #define	__copy_in_user(...)	copy_from_user(__VA_ARGS__)
 
+#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 50000
+#define	user_access_begin(ptr, len) access_ok(ptr, len)
+#else
 #define	user_access_begin() do { } while (0)
+#endif
 #define	user_access_end() do { } while (0)
 
 #define	unsafe_get_user(x, ptr, err) do { \