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authorWei Yongjun <yongjun_wei@trendmicro.com.cn>2012-09-07 14:53:49 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-10 16:33:02 -0700
commit3d39aa6869c3cfc72dccb6c9431ecdb3ad7627ad (patch)
tree2da51f22ede1fdf28768f40b16e31b85d8697268
parent3dbc5ce2bffa40ef9a95247f3e9ea0f8874489ac (diff)
TTY: serial: move the dereference below the NULL test
The dereference should be moved below the NULL test. spatch with a semantic match is used to found this. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/serial/ioc3_serial.c3
-rw-r--r--drivers/tty/serial/ioc4_serial.c3
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index 758ff310f7f8..5ac52898a0bb 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1120,13 +1120,14 @@ static inline int do_read(struct uart_port *the_port, char *buf, int len)
struct ioc3_port *port = get_ioc3_port(the_port);
struct ring *inring;
struct ring_entry *entry;
- struct port_hooks *hooks = port->ip_hooks;
+ struct port_hooks *hooks;
int byte_num;
char *sc;
int loop_counter;
BUG_ON(!(len >= 0));
BUG_ON(!port);
+ hooks = port->ip_hooks;
/* There is a nasty timing issue in the IOC3. When the rx_timer
* expires or the rx_high condition arises, we take an interrupt.
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index cc5aca78ad9b..3e7da10cebba 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -2069,13 +2069,14 @@ static inline int do_read(struct uart_port *the_port, unsigned char *buf,
struct ioc4_port *port = get_ioc4_port(the_port, 0);
struct ring *inring;
struct ring_entry *entry;
- struct hooks *hooks = port->ip_hooks;
+ struct hooks *hooks;
int byte_num;
char *sc;
int loop_counter;
BUG_ON(!(len >= 0));
BUG_ON(!port);
+ hooks = port->ip_hooks;
/* There is a nasty timing issue in the IOC4. When the rx_timer
* expires or the rx_high condition arises, we take an interrupt.