[PATCH] Fixed a minor coding style warning. Arguments in the macros should be coverd in brackets to aviod any precedence issues.

[mshan]

Signed-off-by: mshan <mohsinsha...@gmail.com>
---
 drivers/staging/fwserial/fwserial.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fwserial/fwserial.c 
b/drivers/staging/fwserial/fwserial.c
index 41a49c8..d693c03 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -98,7 +98,7 @@ struct fwtty_transaction {
        };
 };
 
-#define to_device(a, b)                        (a->b)
+#define to_device(a, b)                        ((a)->(b))
 #define fwtty_err(p, fmt, ...)                                         \
        dev_err(to_device(p, device), fmt, ##__VA_ARGS__)
 #define fwtty_info(p, fmt, ...)                                                
\
-- 
2.7.4