[PATCH 1/13] use cpu_relax() in busy loop

[Chris Wright]

Replace busy loop barrier() with cpu_relax().

This is bordering on a gratuitous change given the arm def'n of
cpu_relax().  But I was fixing up other busy loops, and my grep found
this one.

===== drivers/scsi/arm/acornscsi.c 1.35 vs edited =====
--- 1.35/drivers/scsi/arm/acornscsi.c	Mon Aug 25 06:37:34 2003
+++ edited/drivers/scsi/arm/acornscsi.c	Thu Sep 18 11:48:26 2003
@@ -319,7 +319,7 @@
     local_save_flags(flags);
     local_irq_enable();
 
-    while (time_before(jiffies, target_jiffies)) barrier();
+    while (time_before(jiffies, target_jiffies)) cpu_relax();
 
     local_irq_restore(flags);
 }

-
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