3 files changed, 3 insertions, 3 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 0f6f3bcbc8eb..63060a17f7ed 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -205,7 +205,7 @@ void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
         if (phys > ULONG_MAX) {
                 printk(KERN_ERR PREFIX "Cannot map memory that high\n");
-                return 0;
+                return NULL;
         }
         if (acpi_gbl_permanent_mmap)
                 /*
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 61d976e7af5a..4b3d15fa507a 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -1005,7 +1005,7 @@ static int __init acpi_processor_init(void)
 #ifdef CONFIG_SMP
         if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
                                 (struct acpi_table_header **)&madt)))
-                madt = 0;
+                madt = NULL;
 #endif
 
         acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 807978d5381a..81937003fd53 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -408,7 +408,7 @@ acpi_get_table(char *signature,
                 }
 
                 if (!acpi_gbl_permanent_mmap) {
-                        acpi_gbl_root_table_list.tables[i].pointer = 0;
+                        acpi_gbl_root_table_list.tables[i].pointer = NULL;
                 }
 
                 return (status);