typo fixes: occuring -> occurring

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h
index c46b5c8..8a7554f 100644
--- a/include/asm-arm/thread_info.h
+++ b/include/asm-arm/thread_info.h
@@ -116,7 +116,7 @@
 
 /*
  * We use bit 30 of the preempt_count to indicate that kernel
- * preemption is occuring.  See include/asm-arm/hardirq.h.
+ * preemption is occurring.  See include/asm-arm/hardirq.h.
  */
 #define PREEMPT_ACTIVE	0x40000000
 
diff --git a/include/asm-ia64/sn/tioca_provider.h b/include/asm-ia64/sn/tioca_provider.h
index ab7fe24..65cdd73 100644
--- a/include/asm-ia64/sn/tioca_provider.h
+++ b/include/asm-ia64/sn/tioca_provider.h
@@ -27,7 +27,7 @@
 #define PV908234 (1 << 1)
   /* CA:AGPDMA write request data mismatch with ABC1CL merge */
 #define PV895469 (1 << 1)
-  /* TIO:CA TLB invalidate of written GART entries possibly not occuring in CA*/
+  /* TIO:CA TLB invalidate of written GART entries possibly not occurring in CA*/
 #define PV910244 (1 << 1)
 
 struct tioca_dmamap{