[PATCH] s390: atomic primitives

      Hugh Dickins <hugh@veritas.com>

Fix the broken atomic_cmpxchg primitive.  Add atomic_sub_and_test,
atomic64_sub_return, atomic64_sub_and_test, atomic64_cmpxchg,
atomic64_add_unless and atomic64_inc_not_zero.  Replace old style
atomic_compare_and_swap by atomic_cmpxchg.  Shorten the whole header by
defining most primitives with the two inline functions atomic_add_return and
atomic_sub_return.

In addition this patch contains the s390 related fixes of Hugh's "mm: fill
arch atomic64 gaps" patch.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
index df7647c3c100..ecb2f8fd7873 100644
--- a/drivers/s390/net/iucv.c
+++ b/drivers/s390/net/iucv.c
@@ -1,5 +1,5 @@
 /* 
- * $Id: iucv.c,v 1.45 2005/04/26 22:59:06 braunu Exp $
+ * $Id: iucv.c,v 1.47 2005/11/21 11:35:22 mschwide Exp $
  *
  * IUCV network driver
  *
@@ -29,7 +29,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
- * RELEASE-TAG: IUCV lowlevel driver $Revision: 1.45 $
+ * RELEASE-TAG: IUCV lowlevel driver $Revision: 1.47 $
  *
  */
 
@@ -355,7 +355,7 @@ do { \
 static void
 iucv_banner(void)
 {
-        char vbuf[] = "$Revision: 1.45 $";
+        char vbuf[] = "$Revision: 1.47 $";
         char *version = vbuf;
 
         if ((version = strchr(version, ':'))) {
@@ -477,7 +477,7 @@ grab_param(void)
                 ptr++;
                 if (ptr >= iucv_param_pool + PARAM_POOL_SIZE)
                         ptr = iucv_param_pool;
-        } while (atomic_compare_and_swap(0, 1, &ptr->in_use));
+        } while (atomic_cmpxchg(&ptr->in_use, 0, 1) != 0);
         hint = ptr - iucv_param_pool;
 
         memset(&ptr->param, 0, sizeof(ptr->param));