---

yaml --- r: 54182 b: refs/heads/master c: 9490991 h: refs/heads/master v: v3
git-mirror · May 7, 2007 · ddc43c1 · ddc43c1
1 parent d5f512d
commit ddc43c1
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Showing 5 changed files with 16 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a8127717cb24be7b8827a8d9e0ddbfde6b392146
+refs/heads/master: 9490991482a2091a828d997adbc088e24c310a4d
diff --git a/trunk/include/linux/compiler-gcc3.h b/trunk/include/linux/compiler-gcc3.h
@@ -13,4 +13,10 @@
 #define __must_check		__attribute__((warn_unused_result))
 #endif
 
+/*
+ * A trick to suppress uninitialized variable warning without generating any
+ * code
+ */
+#define uninitialized_var(x) x = x
+
 #define __always_inline		inline __attribute__((always_inline))
diff --git a/trunk/include/linux/compiler-gcc4.h b/trunk/include/linux/compiler-gcc4.h
@@ -16,3 +16,9 @@
 #define __must_check 		__attribute__((warn_unused_result))
 #define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
 #define __always_inline		inline __attribute__((always_inline))
+
+/*
+ * A trick to suppress uninitialized variable warning without generating any
+ * code
+ */
+#define uninitialized_var(x) x = x
diff --git a/trunk/include/linux/compiler-intel.h b/trunk/include/linux/compiler-intel.h
@@ -22,3 +22,5 @@
     (typeof(ptr)) (__ptr + (off)); })
 
 #endif
+
+#define uninitialized_var(x) x
diff --git a/trunk/mm/memory.c b/trunk/mm/memory.c
@@ -1455,7 +1455,7 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
 	pte_t *pte;
 	int err;
 	struct page *pmd_page;
-	spinlock_t *ptl = ptl;		/* Suppress gcc warning */
+	spinlock_t *uninitialized_var(ptl);
 
 	pte = (mm == &init_mm) ?
 		pte_alloc_kernel(pmd, addr) :
Original file line number	Diff line number	Diff line change
Expand Up		@@ -22,3 +22,5 @@
		(typeof(ptr)) (__ptr + (off)); })

		#endif

		#define uninitialized_var(x) x