提交 3d39aa68 编写于 作者: W Wei Yongjun 提交者: Greg Kroah-Hartman

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: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 3dbc5ce2
......@@ -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.
......
......@@ -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.
......
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