From 3d39aa6869c3cfc72dccb6c9431ecdb3ad7627ad Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 7 Sep 2012 14:53:49 +0800 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/ioc3_serial.c | 3 ++- drivers/tty/serial/ioc4_serial.c | 3 ++- 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. -- 2.20.1