[IA64] vector-domain - fix vector_table

Fix wrong access to vector_table[].

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 10 insertions, 11 deletions

diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 158eafb5f1aa..fcb77338cc09 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -85,8 +85,8 @@ DEFINE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq) = {
         [0 ... IA64_NUM_VECTORS - 1] = IA64_SPURIOUS_INT_VECTOR
 };
 
-static cpumask_t vector_table[IA64_MAX_DEVICE_VECTORS] = {
-        [0 ... IA64_MAX_DEVICE_VECTORS - 1] = CPU_MASK_NONE
+static cpumask_t vector_table[IA64_NUM_VECTORS] = {
+        [0 ... IA64_NUM_VECTORS - 1] = CPU_MASK_NONE
 };
 
 static int irq_status[NR_IRQS] = {
@@ -123,17 +123,18 @@ static inline int find_unassigned_irq(void)
 static inline int find_unassigned_vector(cpumask_t domain)
 {
         cpumask_t mask;
-        int pos;
+        int pos, vector;
 
         cpus_and(mask, domain, cpu_online_map);
         if (cpus_empty(mask))
                 return -EINVAL;
 
         for (pos = 0; pos < IA64_NUM_DEVICE_VECTORS; pos++) {
-                cpus_and(mask, domain, vector_table[pos]);
+                vector = IA64_FIRST_DEVICE_VECTOR + pos;
+                cpus_and(mask, domain, vector_table[vector]);
                 if (!cpus_empty(mask))
                         continue;
-                return IA64_FIRST_DEVICE_VECTOR + pos;
+                return vector;
         }
         return -ENOSPC;
 }
@@ -141,7 +142,7 @@ static inline int find_unassigned_vector(cpumask_t domain)
 static int __bind_irq_vector(int irq, int vector, cpumask_t domain)
 {
         cpumask_t mask;
-        int cpu, pos;
+        int cpu;
         struct irq_cfg *cfg = &irq_cfg[irq];
 
         cpus_and(mask, domain, cpu_online_map);
@@ -156,8 +157,7 @@ static int __bind_irq_vector(int irq, int vector, cpumask_t domain)
         cfg->vector = vector;
         cfg->domain = domain;
         irq_status[irq] = IRQ_USED;
-        pos = vector - IA64_FIRST_DEVICE_VECTOR;
-        cpus_or(vector_table[pos], vector_table[pos], domain);
+        cpus_or(vector_table[vector], vector_table[vector], domain);
         return 0;
 }
 
@@ -174,7 +174,7 @@ int bind_irq_vector(int irq, int vector, cpumask_t domain)
 
 static void __clear_irq_vector(int irq)
 {
-        int vector, cpu, pos;
+        int vector, cpu;
         cpumask_t mask;
         cpumask_t domain;
         struct irq_cfg *cfg = &irq_cfg[irq];
@@ -189,8 +189,7 @@ static void __clear_irq_vector(int irq)
         cfg->vector = IRQ_VECTOR_UNASSIGNED;
         cfg->domain = CPU_MASK_NONE;
         irq_status[irq] = IRQ_UNUSED;
-        pos = vector - IA64_FIRST_DEVICE_VECTOR;
-        cpus_andnot(vector_table[pos], vector_table[pos], domain);
+        cpus_andnot(vector_table[vector], vector_table[vector], domain);
 }
 
 static void clear_irq_vector(int irq)