svn commit: r352442 - stable/12/sys/arm/arm

[Aleksandr Rybalko]

Author: ray
Date: Tue Sep 17 11:20:53 2019
New Revision: 352442
URL: https://svnweb.freebsd.org/changeset/base/352442

Log:
  MFC r351649 Check for region dups.

Modified:
  stable/12/sys/arm/arm/physmem.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/arm/arm/physmem.c
==============================================================================
--- stable/12/sys/arm/arm/physmem.c	Tue Sep 17 10:09:59 2019	(r352441)
+++ stable/12/sys/arm/arm/physmem.c	Tue Sep 17 11:20:53 2019	(r352442)
@@ -287,6 +287,8 @@ insert_region(struct region *regions, size_t rcnt, vm_
 
 	ep = regions + rcnt;
 	for (i = 0, rp = regions; i < rcnt; ++i, ++rp) {
+		if (rp->addr == addr && rp->size == size) /* Pure dup. */
+			return (rcnt);
 		if (flags == rp->flags) {
 			if (addr + size == rp->addr) {
 				rp->addr = addr;