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USB: serial: Eliminate useless code 

The variables priv and portdata are initialized twice to the same (side
effect-free) expressions.  Drop one initialization in each case.

A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)

// <smpl>
@forall@
idexpression *x;
identifier f!=ERR_PTR;
@@

x = f(...)
... when != x
(
x = f(...,<+...x...+>,...)
|
* x = f(...)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Julia Lawall 2010-01-16 16:59:51 +01:00 committed by Greg Kroah-Hartman
parent aa7907407a
commit a45a1e07aa
2 changed files with 1 additions and 2 deletions
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1
drivers/usb/serial/cypress_m8.c
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@ -691,7 +691,6 @@ static void cypress_dtr_rts(struct usb_serial_port *port, int on)
{
struct cypress_private *priv = usb_get_serial_port_data(port);
/* drop dtr and rts */
priv = usb_get_serial_port_data(port);
spin_lock_irq(&priv->lock);
if (on == 0)
priv->line_control = 0;

2
drivers/usb/serial/sierra.c
View File

@ -477,7 +477,7 @@ static void sierra_outdat_callback(struct urb *urb)
static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
struct sierra_port_private *portdata = usb_get_serial_port_data(port);
struct sierra_port_private *portdata;
struct sierra_intf_private *intfdata;
struct usb_serial *serial = port->serial;
unsigned long flags;