5 files changed, 26 insertions, 16 deletions

diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c
index 2a1ef742e223..b7515bc808a8 100644
--- a/arch/ia64/kernel/acpi-ext.c
+++ b/arch/ia64/kernel/acpi-ext.c
@@ -50,7 +50,7 @@ static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
         memcpy(length, vendor->byte_data + 8, sizeof(*length));
 
   exit:
-        acpi_os_free(buffer.pointer);
+        kfree(buffer.pointer);
         return status;
 }
 
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index ccdef199d915..99761b81db44 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -856,7 +856,7 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
         obj = buffer.pointer;
         if (obj->type != ACPI_TYPE_BUFFER ||
             obj->buffer.length < sizeof(*lsapic)) {
-                acpi_os_free(buffer.pointer);
+                kfree(buffer.pointer);
                 return -EINVAL;
         }
 
@@ -864,13 +864,13 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
 
         if ((lsapic->header.type != ACPI_MADT_LSAPIC) ||
             (!lsapic->flags.enabled)) {
-                acpi_os_free(buffer.pointer);
+                kfree(buffer.pointer);
                 return -EINVAL;
         }
 
         physid = ((lsapic->id << 8) | (lsapic->eid));
 
-        acpi_os_free(buffer.pointer);
+        kfree(buffer.pointer);
         buffer.length = ACPI_ALLOCATE_BUFFER;
         buffer.pointer = NULL;
 
@@ -934,20 +934,20 @@ acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
         obj = buffer.pointer;
         if (obj->type != ACPI_TYPE_BUFFER ||
             obj->buffer.length < sizeof(*iosapic)) {
-                acpi_os_free(buffer.pointer);
+                kfree(buffer.pointer);
                 return AE_OK;
         }
 
         iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer;
 
         if (iosapic->header.type != ACPI_MADT_IOSAPIC) {
-                acpi_os_free(buffer.pointer);
+                kfree(buffer.pointer);
                 return AE_OK;
         }
 
         gsi_base = iosapic->global_irq_base;
 
-        acpi_os_free(buffer.pointer);
+        kfree(buffer.pointer);
 
         /*
          * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index eb8e8dc5ac8e..2fbe4536fe18 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -678,7 +678,7 @@ copy_reg(const u64 *fr, u64 fnat, u64 *tr, u64 *tnat)
  */
 
 static void
-ia64_mca_modify_comm(const task_t *previous_current)
+ia64_mca_modify_comm(const struct task_struct *previous_current)
 {
         char *p, comm[sizeof(current->comm)];
         if (previous_current->pid)
@@ -709,7 +709,7 @@ ia64_mca_modify_comm(const task_t *previous_current)
  * that we can do backtrace on the MCA/INIT handler code itself.
  */
 
-static task_t *
+static struct task_struct *
 ia64_mca_modify_original_stack(struct pt_regs *regs,
                 const struct switch_stack *sw,
                 struct ia64_sal_os_state *sos,
@@ -719,7 +719,7 @@ ia64_mca_modify_original_stack(struct pt_regs *regs,
         ia64_va va;
         extern char ia64_leave_kernel[];        /* Need asm address, not function descriptor */
         const pal_min_state_area_t *ms = sos->pal_min_state;
-        task_t *previous_current;
+        struct task_struct *previous_current;
         struct pt_regs *old_regs;
         struct switch_stack *old_sw;
         unsigned size = sizeof(struct pt_regs) +
@@ -1023,7 +1023,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
         pal_processor_state_info_t *psp = (pal_processor_state_info_t *)
                 &sos->proc_state_param;
         int recover, cpu = smp_processor_id();
-        task_t *previous_current;
+        struct task_struct *previous_current;
         struct ia64_mca_notify_die nd =
                 { .sos = sos, .monarch_cpu = &monarch_cpu };
 
@@ -1352,7 +1352,7 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw,
 {
         static atomic_t slaves;
         static atomic_t monarchs;
-        task_t *previous_current;
+        struct task_struct *previous_current;
         int cpu = smp_processor_id();
         struct ia64_mca_notify_die nd =
                 { .sos = sos, .monarch_cpu = &monarch_cpu };
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index e1960979be29..6203ed4ec8cf 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -124,7 +124,7 @@ extern void __devinit calibrate_delay (void);
 extern void start_ap (void);
 extern unsigned long ia64_iobase;
 
-task_t *task_for_booting_cpu;
+struct task_struct *task_for_booting_cpu;
 
 /*
  * State for each CPU
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 525b082eb661..99bd9e30db96 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -313,9 +313,19 @@ static void __meminit scatter_node_data(void)
         pg_data_t **dst;
         int node;
 
-        for_each_online_node(node) {
-                dst = LOCAL_DATA_ADDR(pgdat_list[node])->pg_data_ptrs;
-                memcpy(dst, pgdat_list, sizeof(pgdat_list));
+        /*
+         * for_each_online_node() can't be used at here.
+         * node_online_map is not set for hot-added nodes at this time,
+         * because we are halfway through initialization of the new node's
+         * structures.  If for_each_online_node() is used, a new node's
+         * pg_data_ptrs will be not initialized. Insted of using it,
+         * pgdat_list[] is checked.
+         */
+        for_each_node(node) {
+                if (pgdat_list[node]) {
+                        dst = LOCAL_DATA_ADDR(pgdat_list[node])->pg_data_ptrs;
+                        memcpy(dst, pgdat_list, sizeof(pgdat_list));
+                }
         }
 }