percpu: make accessors check for percpu pointer in sparse

[safe/jmp/linux-2.6] / include / asm-generic / percpu.h

diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index fded453..04f91c2 100644 (file)
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -42,8 +42,10 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
  */
 #ifndef SHIFT_PERCPU_PTR
 /* Weird cast keeps both GCC and sparse happy. */
-#define SHIFT_PERCPU_PTR(__p, __offset)                                \
-       RELOC_HIDE((typeof(*(__p)) __kernel __force *)(__p), (__offset))
+#define SHIFT_PERCPU_PTR(__p, __offset)        ({                              \
+       __verify_pcpu_ptr((__p));                                       \
+       RELOC_HIDE((typeof(*(__p)) __kernel __force *)(__p), (__offset)); \
+})
 #endif
 
 /*