2 files changed, 11 insertions, 7 deletions

diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 96c31b4180c3..0c66dbdd1d72 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -5,7 +5,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2000-2007 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2008 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 #include <linux/irq.h>
@@ -375,6 +375,7 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
         int cpu = nasid_slice_to_cpuid(nasid, slice);
 #ifdef CONFIG_SMP
         int cpuphys;
+        irq_desc_t *desc;
 #endif
 
         pci_dev_get(pci_dev);
@@ -391,6 +392,12 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
 #ifdef CONFIG_SMP
         cpuphys = cpu_physical_id(cpu);
         set_irq_affinity_info(sn_irq_info->irq_irq, cpuphys, 0);
+        desc = irq_to_desc(sn_irq_info->irq_irq);
+        /*
+         * Affinity was set by the PROM, prevent it from
+         * being reset by the request_irq() path.
+         */
+        desc->status |= IRQ_AFFINITY_SET;
 #endif
 }
 
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index bb1d24929640..02c5b8a9fb60 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -200,7 +200,7 @@ static int __cpuinitdata shub_1_1_found;
  * Set flag for enabling shub specific wars
  */
 
-static inline int __init is_shub_1_1(int nasid)
+static inline int __cpuinit is_shub_1_1(int nasid)
 {
         unsigned long id;
         int rev;
@@ -212,7 +212,7 @@ static inline int __init is_shub_1_1(int nasid)
         return rev <= 2;
 }
 
-static void __init sn_check_for_wars(void)
+static void __cpuinit sn_check_for_wars(void)
 {
         int cnode;
 
@@ -512,7 +512,6 @@ static void __init sn_init_pdas(char **cmdline_p)
         for_each_online_node(cnode) {
                 nodepdaindr[cnode] =
                     alloc_bootmem_node(NODE_DATA(cnode), sizeof(nodepda_t));
-                memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
                 memset(nodepdaindr[cnode]->phys_cpuid, -1,
                     sizeof(nodepdaindr[cnode]->phys_cpuid));
                 spin_lock_init(&nodepdaindr[cnode]->ptc_lock);
@@ -521,11 +520,9 @@ static void __init sn_init_pdas(char **cmdline_p)
         /*
          * Allocate & initialize nodepda for TIOs.  For now, put them on node 0.
          */
-        for (cnode = num_online_nodes(); cnode < num_cnodes; cnode++) {
+        for (cnode = num_online_nodes(); cnode < num_cnodes; cnode++)
                 nodepdaindr[cnode] =
                     alloc_bootmem_node(NODE_DATA(0), sizeof(nodepda_t));
-                memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
-        }
 
         /*
          * Now copy the array of nodepda pointers to each nodepda.