From: Mathieu OTHACEHE <m.othacehe@gmail.com>
To: johan@kernel.org, gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
Mathieu OTHACEHE <m.othacehe@gmail.com>
Subject: [PATCH v2 04/22] usb: serial: ti_usb_3410_5052: Remove useless NULL-testing
Date: Tue, 26 Jul 2016 19:59:44 +0200 [thread overview]
Message-ID: <20160726180002.2398-5-m.othacehe@gmail.com> (raw)
In-Reply-To: <20160726180002.2398-1-m.othacehe@gmail.com>
It is useless to check the return of usb_get_serial_port_data.
Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
---
drivers/usb/serial/ti_usb_3410_5052.c | 34 +---------------------------------
1 file changed, 1 insertion(+), 33 deletions(-)
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index b694d69..c8ed3f9 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -653,9 +653,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
TI_PIPE_TIMEOUT_ENABLE |
(TI_TRANSFER_TIMEOUT << 2));
- if (tport == NULL)
- return -ENODEV;
-
dev = port->serial->dev;
tdev = tport->tp_tdev;
@@ -784,8 +781,6 @@ static void ti_close(struct usb_serial_port *port)
tdev = usb_get_serial_data(port->serial);
tport = usb_get_serial_port_data(port);
- if (tdev == NULL || tport == NULL)
- return;
tport->tp_is_open = 0;
@@ -827,7 +822,7 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
return 0;
}
- if (tport == NULL || !tport->tp_is_open)
+ if (!tport->tp_is_open)
return -ENODEV;
count = kfifo_in_locked(&port->write_fifo, data, count,
@@ -845,9 +840,6 @@ static int ti_write_room(struct tty_struct *tty)
int room = 0;
unsigned long flags;
- if (tport == NULL)
- return 0;
-
spin_lock_irqsave(&tport->tp_lock, flags);
room = kfifo_avail(&port->write_fifo);
spin_unlock_irqrestore(&tport->tp_lock, flags);
@@ -864,9 +856,6 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
int chars = 0;
unsigned long flags;
- if (tport == NULL)
- return 0;
-
spin_lock_irqsave(&tport->tp_lock, flags);
chars = kfifo_len(&port->write_fifo);
spin_unlock_irqrestore(&tport->tp_lock, flags);
@@ -893,9 +882,6 @@ static void ti_throttle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct ti_port *tport = usb_get_serial_port_data(port);
- if (tport == NULL)
- return;
-
if (I_IXOFF(tty) || C_CRTSCTS(tty))
ti_stop_read(tport, tty);
@@ -908,9 +894,6 @@ static void ti_unthrottle(struct tty_struct *tty)
struct ti_port *tport = usb_get_serial_port_data(port);
int status;
- if (tport == NULL)
- return;
-
if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
status = ti_restart_read(tport, tty);
if (status)
@@ -925,9 +908,6 @@ static int ti_ioctl(struct tty_struct *tty,
struct usb_serial_port *port = tty->driver_data;
struct ti_port *tport = usb_get_serial_port_data(port);
- if (tport == NULL)
- return -ENODEV;
-
switch (cmd) {
case TIOCGSERIAL:
return ti_get_serial_info(tport,
@@ -966,9 +946,6 @@ static void ti_set_termios(struct tty_struct *tty,
old_termios->c_iflag);
}
- if (tport == NULL)
- return;
-
config = kzalloc(sizeof(*config), GFP_KERNEL);
if (!config)
return;
@@ -1089,9 +1066,6 @@ static int ti_tiocmget(struct tty_struct *tty)
unsigned int mcr;
unsigned long flags;
- if (tport == NULL)
- return -ENODEV;
-
spin_lock_irqsave(&tport->tp_lock, flags);
msr = tport->tp_msr;
mcr = tport->tp_shadow_mcr;
@@ -1119,9 +1093,6 @@ static int ti_tiocmset(struct tty_struct *tty,
unsigned int mcr;
unsigned long flags;
- if (tport == NULL)
- return -ENODEV;
-
spin_lock_irqsave(&tport->tp_lock, flags);
mcr = tport->tp_shadow_mcr;
@@ -1152,9 +1123,6 @@ static void ti_break(struct tty_struct *tty, int break_state)
dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
- if (tport == NULL)
- return;
-
status = ti_write_byte(port, tport->tp_tdev,
tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
--
2.9.0
next prev parent reply other threads:[~2016-07-26 18:08 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-26 17:59 [PATCH v2 00/22] usb: serial: ti_usb_3410_5052: clean driver Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 01/22] usb: serial: ti_usb_3410_5052: Do not use __uX types Mathieu OTHACEHE
2016-08-23 7:44 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 02/22] usb: serial: ti_usb_3410_5052: Remove useless dev_dbg messages Mathieu OTHACEHE
2016-08-23 7:52 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 03/22] usb: serial: ti_usb_3410_5052: Use kzalloc instead of kmalloc Mathieu OTHACEHE
2016-07-27 8:09 ` Oliver Neukum
2016-07-27 12:46 ` Mathieu OTHACEHE
2016-08-23 7:54 ` Johan Hovold
2016-07-27 11:21 ` Sergei Shtylyov
2016-07-26 17:59 ` Mathieu OTHACEHE [this message]
2016-08-23 8:04 ` [PATCH v2 04/22] usb: serial: ti_usb_3410_5052: Remove useless NULL-testing Johan Hovold
2016-07-26 17:59 ` [PATCH v2 05/22] usb: serial: ti_usb_3410_5052: Use C_X macros instead of c_cflag manipulation Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 06/22] usb: serial: ti_usb_3410_5052: Remove unused variables Mathieu OTHACEHE
2016-08-23 8:15 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 07/22] usb: serial: ti_usb_3410_5052: Use macros instead of magic values Mathieu OTHACEHE
2016-08-23 8:19 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 08/22] usb: serial: ti_usb_3410_5052: Remove in_sync and out_sync functions Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 09/22] usb: serial: ti_usb_3410_5052: Remove useless tty_wakeup Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 10/22] usb: serial: ti_usb_3410_5052: Change ti_write_byte function arguments Mathieu OTHACEHE
2016-07-27 8:13 ` Oliver Neukum
2016-07-27 16:08 ` Mathieu OTHACEHE
2016-07-27 19:10 ` Oliver Neukum
2016-07-26 17:59 ` [PATCH v2 11/22] usb: serial: ti_usb_3410_5052: Do not modify interrupt context Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 12/22] usb: serial: ti_usb_3410_5052: Remove usb_serial pointer in ti_port Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 13/22] usb: serial: ti_usb_3410_5052: Change ti_get/set_serial_info function arguments Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 14/22] usb: serial: ti_usb_3410_5052: Do not set shadow mcr in open callback Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 15/22] usb: serial: ti_usb_3410_5052: Check old_termios parameter in set_termios Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 16/22] usb: serial: ti_usb_3410_5052: Raise DTR and RTS flags if speed is not null anymore Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 17/22] usb: serial: ti_usb_3410_5052: Fix firmware downloading Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 18/22] usb: serial: ti_usb_3410_5052: Standardize debug and error messages Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 19/22] usb: serial: ti_usb_3410_5052: Use variables for vendor and product Mathieu OTHACEHE
2016-07-26 18:00 ` [PATCH v2 20/22] usb: serial: ti_usb_3410_5052: Set shadow msr before waking up waiters Mathieu OTHACEHE
2016-07-26 18:00 ` [PATCH v2 21/22] usb: serial: ti_usb_3410_5052: Add CMSPAR support Mathieu OTHACEHE
2016-07-26 18:00 ` [PATCH v2 22/22] usb: serial: ti_usb_3410_5052: Fix indentation problems Mathieu OTHACEHE
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