kfifo: add parenthesis for macro parameter reference

Some macro parameter references inside typeof() operator are not enclosed
with parenthesis.  It should be safer to add them.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 4aa95f2..62dbee5 100644 (file)
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -214,7 +214,7 @@ __kfifo_must_check_helper(unsigned int val)
  */
 #define kfifo_reset(fifo) \
 (void)({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        __tmp->kfifo.in = __tmp->kfifo.out = 0; \
 })
 
@@ -228,7 +228,7 @@ __kfifo_must_check_helper(unsigned int val)
  */
 #define kfifo_reset_out(fifo)  \
 (void)({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        __tmp->kfifo.out = __tmp->kfifo.in; \
 })
 
@@ -238,7 +238,7 @@ __kfifo_must_check_helper(unsigned int val)
  */
 #define kfifo_len(fifo) \
 ({ \
-       typeof(fifo + 1) __tmpl = (fifo); \
+       typeof((fifo) + 1) __tmpl = (fifo); \
        __tmpl->kfifo.in - __tmpl->kfifo.out; \
 })
 
@@ -248,7 +248,7 @@ __kfifo_must_check_helper(unsigned int val)
  */
 #define        kfifo_is_empty(fifo) \
 ({ \
-       typeof(fifo + 1) __tmpq = (fifo); \
+       typeof((fifo) + 1) __tmpq = (fifo); \
        __tmpq->kfifo.in == __tmpq->kfifo.out; \
 })
 
@@ -258,7 +258,7 @@ __kfifo_must_check_helper(unsigned int val)
  */
 #define        kfifo_is_full(fifo) \
 ({ \
-       typeof(fifo + 1) __tmpq = (fifo); \
+       typeof((fifo) + 1) __tmpq = (fifo); \
        kfifo_len(__tmpq) > __tmpq->kfifo.mask; \
 })
 
@@ -269,7 +269,7 @@ __kfifo_must_check_helper(unsigned int val)
 #define        kfifo_avail(fifo) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmpq = (fifo); \
+       typeof((fifo) + 1) __tmpq = (fifo); \
        const size_t __recsize = sizeof(*__tmpq->rectype); \
        unsigned int __avail = kfifo_size(__tmpq) - kfifo_len(__tmpq); \
        (__recsize) ? ((__avail <= __recsize) ? 0 : \
@@ -284,7 +284,7 @@ __kfifo_must_check_helper( \
  */
 #define        kfifo_skip(fifo) \
 (void)({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
        if (__recsize) \
@@ -302,7 +302,7 @@ __kfifo_must_check_helper( \
 #define kfifo_peek_len(fifo) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
        (!__recsize) ? kfifo_len(__tmp) * sizeof(*__tmp->type) : \
@@ -325,7 +325,7 @@ __kfifo_must_check_helper( \
 #define kfifo_alloc(fifo, size, gfp_mask) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
        __is_kfifo_ptr(__tmp) ? \
        __kfifo_alloc(__kfifo, size, sizeof(*__tmp->type), gfp_mask) : \
@@ -339,7 +339,7 @@ __kfifo_must_check_helper( \
  */
 #define kfifo_free(fifo) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
        if (__is_kfifo_ptr(__tmp)) \
                __kfifo_free(__kfifo); \
@@ -358,7 +358,7 @@ __kfifo_must_check_helper( \
  */
 #define kfifo_init(fifo, buffer, size) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
        __is_kfifo_ptr(__tmp) ? \
        __kfifo_init(__kfifo, buffer, size, sizeof(*__tmp->type)) : \
@@ -379,8 +379,8 @@ __kfifo_must_check_helper( \
  */
 #define        kfifo_put(fifo, val) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(val + 1) __val = (val); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((val) + 1) __val = (val); \
        unsigned int __ret; \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -421,8 +421,8 @@ __kfifo_must_check_helper( \
 #define        kfifo_get(fifo, val) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(val + 1) __val = (val); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((val) + 1) __val = (val); \
        unsigned int __ret; \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -462,8 +462,8 @@ __kfifo_must_check_helper( \
 #define        kfifo_peek(fifo, val) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(val + 1) __val = (val); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((val) + 1) __val = (val); \
        unsigned int __ret; \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -501,8 +501,8 @@ __kfifo_must_check_helper( \
  */
 #define        kfifo_in(fifo, buf, n) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(buf + 1) __buf = (buf); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((buf) + 1) __buf = (buf); \
        unsigned long __n = (n); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -554,8 +554,8 @@ __kfifo_must_check_helper( \
 #define        kfifo_out(fifo, buf, n) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(buf + 1) __buf = (buf); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((buf) + 1) __buf = (buf); \
        unsigned long __n = (n); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -611,7 +611,7 @@ __kfifo_must_check_helper( \
 #define        kfifo_from_user(fifo, from, len, copied) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        const void __user *__from = (from); \
        unsigned int __len = (len); \
        unsigned int *__copied = (copied); \
@@ -639,7 +639,7 @@ __kfifo_must_check_helper( \
 #define        kfifo_to_user(fifo, to, len, copied) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        void __user *__to = (to); \
        unsigned int __len = (len); \
        unsigned int *__copied = (copied); \
@@ -666,7 +666,7 @@ __kfifo_must_check_helper( \
  */
 #define        kfifo_dma_in_prepare(fifo, sgl, nents, len) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        struct scatterlist *__sgl = (sgl); \
        int __nents = (nents); \
        unsigned int __len = (len); \
@@ -690,7 +690,7 @@ __kfifo_must_check_helper( \
  */
 #define kfifo_dma_in_finish(fifo, len) \
 (void)({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        unsigned int __len = (len); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -717,7 +717,7 @@ __kfifo_must_check_helper( \
  */
 #define        kfifo_dma_out_prepare(fifo, sgl, nents, len) \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo);  \
        struct scatterlist *__sgl = (sgl); \
        int __nents = (nents); \
        unsigned int __len = (len); \
@@ -741,7 +741,7 @@ __kfifo_must_check_helper( \
  */
 #define kfifo_dma_out_finish(fifo, len) \
 (void)({ \
-       typeof(fifo + 1) __tmp = (fifo); \
+       typeof((fifo) + 1) __tmp = (fifo); \
        unsigned int __len = (len); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \
@@ -766,8 +766,8 @@ __kfifo_must_check_helper( \
 #define        kfifo_out_peek(fifo, buf, n) \
 __kfifo_must_check_helper( \
 ({ \
-       typeof(fifo + 1) __tmp = (fifo); \
-       typeof(buf + 1) __buf = (buf); \
+       typeof((fifo) + 1) __tmp = (fifo); \
+       typeof((buf) + 1) __buf = (buf); \
        unsigned long __n = (n); \
        const size_t __recsize = sizeof(*__tmp->rectype); \
        struct __kfifo *__kfifo = &__tmp->kfifo; \