sparse: fix pointer/integer confusion

I don't think we're in K&R any more, Toto.

If you want a NULL pointer, use NULL. Don't use an integer.

Most of the users really didn't seem to know the proper type.

3 files changed, 4 insertions, 4 deletions

diff --git a/mm/memory.c b/mm/memory.c
index c511c41943f24b..0404594104a5f3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -669,7 +669,7 @@ out:
 static inline struct page *get_page_map(struct page *page)
 {
 	if (!pfn_valid(page_to_pfn(page)))
-		return 0;
+		return NULL;
 	return page;
 }
 
@@ -1805,7 +1805,7 @@ struct vm_area_struct *get_gate_vma(struct task_struct *tsk)
 #ifdef AT_SYSINFO_EHDR
 	return &gate_vma;
 #else
-	return 0;
+	return NULL;
 #endif
 }
 
diff --git a/mm/slab.c b/mm/slab.c
index 741f6461031f27..cad4d294972a63 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -474,7 +474,7 @@ struct cache_names {
 static struct cache_names __initdata cache_names[] = {
 #define CACHE(x) { .name = "size-" #x, .name_dma = "size-" #x "(DMA)" },
 #include <linux/kmalloc_sizes.h>
-	{ 0, }
+	{ NULL, }
 #undef CACHE
 };
 
diff --git a/mm/swapfile.c b/mm/swapfile.c
index ef4045b4204e3b..281a3fbc0d8949 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1293,7 +1293,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
 	int i, prev;
 	int error;
 	static int least_priority;
-	union swap_header *swap_header = 0;
+	union swap_header *swap_header = NULL;
 	int swap_header_version;
 	int nr_good_pages = 0;
 	unsigned long maxpages = 1;