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tty: Make ->set_termios() old ktermios const

Browse source 
There should be no reason to adjust old ktermios which is going to get
discarded anyway.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220816115739.10928-9-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-08-16 14:57:39 +03:00 • committed by Greg Kroah-Hartman
parent f6d47fe592
commit a8c11c1520
18 changed files with 39 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/char/pcmcia/synclink_cs.c
View file

@ -2274,7 +2274,8 @@ static int mgslpc_ioctl(struct tty_struct *tty,
* tty pointer to tty structure * tty pointer to tty structure
* termios pointer to buffer to hold returned old termios * termios pointer to buffer to hold returned old termios
*/ */
static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) static void mgslpc_set_termios(struct tty_struct *tty,
const struct ktermios *old_termios)
{ {
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags; unsigned long flags;

2
drivers/ipack/devices/ipoctal.c
View file

@ -497,7 +497,7 @@ static unsigned int ipoctal_chars_in_buffer(struct tty_struct *tty)
} }
static void ipoctal_set_termios(struct tty_struct *tty, static void ipoctal_set_termios(struct tty_struct *tty,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
unsigned int cflag; unsigned int cflag;
unsigned char mr1 = 0; unsigned char mr1 = 0;

4
drivers/mmc/core/sdio_uart.c
View file

@ -246,7 +246,7 @@ static inline void sdio_uart_update_mctrl(struct sdio_uart_port *port,
static void sdio_uart_change_speed(struct sdio_uart_port *port, static void sdio_uart_change_speed(struct sdio_uart_port *port,
struct ktermios *termios, struct ktermios *termios,
struct ktermios *old) const struct ktermios *old)
{ {
unsigned char cval, fcr = 0; unsigned char cval, fcr = 0;
unsigned int baud, quot; unsigned int baud, quot;
@ -859,7 +859,7 @@ static void sdio_uart_unthrottle(struct tty_struct *tty)
} }
static void sdio_uart_set_termios(struct tty_struct *tty, static void sdio_uart_set_termios(struct tty_struct *tty,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
struct sdio_uart_port *port = tty->driver_data; struct sdio_uart_port *port = tty->driver_data;
unsigned int cflag = tty->termios.c_cflag; unsigned int cflag = tty->termios.c_cflag;

3
drivers/net/usb/hso.c
View file

@ -1380,7 +1380,8 @@ static void hso_serial_cleanup(struct tty_struct *tty)
} }
/* setup the term */ /* setup the term */
static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) static void hso_serial_set_termios(struct tty_struct *tty,
const struct ktermios *old)
{ {
struct hso_serial *serial = tty->driver_data; struct hso_serial *serial = tty->driver_data;
unsigned long flags; unsigned long flags;

2
drivers/s390/char/tty3270.c
View file

@ -1760,7 +1760,7 @@ tty3270_flush_chars(struct tty_struct *tty)
* Check for visible/invisible input switches * Check for visible/invisible input switches
*/ */
static void static void
tty3270_set_termios(struct tty_struct *tty, struct ktermios *old) tty3270_set_termios(struct tty_struct *tty, const struct ktermios *old)
{ {
struct tty3270 *tp; struct tty3270 *tp;
int new; int new;

3
drivers/staging/fwserial/fwserial.c
View file

@ -1267,7 +1267,8 @@ static int fwtty_ioctl(struct tty_struct *tty, unsigned int cmd,
return err; return err;
} }
static void fwtty_set_termios(struct tty_struct *tty, struct ktermios *old) static void fwtty_set_termios(struct tty_struct *tty,
const struct ktermios *old)
{ {
struct fwtty_port *port = tty->driver_data; struct fwtty_port *port = tty->driver_data;
unsigned int baud; unsigned int baud;

2
drivers/staging/greybus/uart.c
View file

@ -480,7 +480,7 @@ static int gb_tty_break_ctl(struct tty_struct *tty, int state)
} }
static void gb_tty_set_termios(struct tty_struct *tty, static void gb_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old) const struct ktermios *termios_old)
{ {
struct gb_uart_set_line_coding_request newline; struct gb_uart_set_line_coding_request newline;
struct gb_tty *gb_tty = tty->driver_data; struct gb_tty *gb_tty = tty->driver_data;

6
drivers/tty/amiserial.c
View file

@ -94,7 +94,7 @@ static struct tty_driver *serial_driver;
static unsigned char current_ctl_bits; static unsigned char current_ctl_bits;
static void change_speed(struct tty_struct *tty, struct serial_state *info, static void change_speed(struct tty_struct *tty, struct serial_state *info,
struct ktermios *old); const struct ktermios *old);
static void rs_wait_until_sent(struct tty_struct *tty, int timeout); static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
@ -566,7 +566,7 @@ static void shutdown(struct tty_struct *tty, struct serial_state *info)
* the specified baud rate for a serial port. * the specified baud rate for a serial port.
*/ */
static void change_speed(struct tty_struct *tty, struct serial_state *info, static void change_speed(struct tty_struct *tty, struct serial_state *info,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
struct tty_port *port = &info->tport; struct tty_port *port = &info->tport;
int quot = 0, baud_base, baud; int quot = 0, baud_base, baud;
@ -1169,7 +1169,7 @@ static int rs_ioctl(struct tty_struct *tty,
return 0; return 0;
} }
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) static void rs_set_termios(struct tty_struct *tty, const struct ktermios *old_termios)
{ {
struct serial_state *info = tty->driver_data; struct serial_state *info = tty->driver_data;
unsigned long flags; unsigned long flags;

9
drivers/tty/moxa.c
View file

@ -491,7 +491,7 @@ static int moxa_write(struct tty_struct *, const unsigned char *, int);
static unsigned int moxa_write_room(struct tty_struct *); static unsigned int moxa_write_room(struct tty_struct *);
static void moxa_flush_buffer(struct tty_struct *); static void moxa_flush_buffer(struct tty_struct *);
static unsigned int moxa_chars_in_buffer(struct tty_struct *); static unsigned int moxa_chars_in_buffer(struct tty_struct *);
static void moxa_set_termios(struct tty_struct *, struct ktermios *); static void moxa_set_termios(struct tty_struct *, const struct ktermios *);
static void moxa_stop(struct tty_struct *); static void moxa_stop(struct tty_struct *);
static void moxa_start(struct tty_struct *); static void moxa_start(struct tty_struct *);
static void moxa_hangup(struct tty_struct *); static void moxa_hangup(struct tty_struct *);
@ -499,7 +499,7 @@ static int moxa_tiocmget(struct tty_struct *tty);
static int moxa_tiocmset(struct tty_struct *tty, static int moxa_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear); unsigned int set, unsigned int clear);
static void moxa_poll(struct timer_list *); static void moxa_poll(struct timer_list *);
static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); static void moxa_set_tty_param(struct tty_struct *, const struct ktermios *);
static void moxa_shutdown(struct tty_port *); static void moxa_shutdown(struct tty_port *);
static int moxa_carrier_raised(struct tty_port *); static int moxa_carrier_raised(struct tty_port *);
static void moxa_dtr_rts(struct tty_port *, int); static void moxa_dtr_rts(struct tty_port *, int);
@ -1602,7 +1602,7 @@ static int moxa_tiocmset(struct tty_struct *tty,
} }
static void moxa_set_termios(struct tty_struct *tty, static void moxa_set_termios(struct tty_struct *tty,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
struct moxa_port *ch = tty->driver_data; struct moxa_port *ch = tty->driver_data;
@ -1761,7 +1761,8 @@ static void moxa_poll(struct timer_list *unused)
/******************************************************************************/ /******************************************************************************/
static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) static void moxa_set_tty_param(struct tty_struct *tty,
const struct ktermios *old_termios)
{ {
register struct ktermios *ts = &tty->termios; register struct ktermios *ts = &tty->termios;
struct moxa_port *ch = tty->driver_data; struct moxa_port *ch = tty->driver_data;

6
drivers/tty/mxser.c
View file

@ -571,7 +571,8 @@ static void mxser_handle_cts(struct tty_struct *tty, struct mxser_port *info,
* This routine is called to set the UART divisor registers to match * This routine is called to set the UART divisor registers to match
* the specified baud rate for a serial port. * the specified baud rate for a serial port.
*/ */
static void mxser_change_speed(struct tty_struct *tty, struct ktermios *old_termios) static void mxser_change_speed(struct tty_struct *tty,
const struct ktermios *old_termios)
{ {
struct mxser_port *info = tty->driver_data; struct mxser_port *info = tty->driver_data;
unsigned cflag, cval; unsigned cflag, cval;
@ -1348,7 +1349,8 @@ static void mxser_start(struct tty_struct *tty)
spin_unlock_irqrestore(&info->slock, flags); spin_unlock_irqrestore(&info->slock, flags);
} }
static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios) static void mxser_set_termios(struct tty_struct *tty,
const struct ktermios *old_termios)
{ {
struct mxser_port *info = tty->driver_data; struct mxser_port *info = tty->driver_data;
unsigned long flags; unsigned long flags;

3
drivers/tty/n_gsm.c
View file

@ -3647,7 +3647,8 @@ static int gsmtty_ioctl(struct tty_struct *tty,
} }
} }
static void gsmtty_set_termios(struct tty_struct *tty, struct ktermios *old) static void gsmtty_set_termios(struct tty_struct *tty,
const struct ktermios *old)
{ {
struct gsm_dlci *dlci = tty->driver_data; struct gsm_dlci *dlci = tty->driver_data;
if (dlci->state == DLCI_CLOSED) if (dlci->state == DLCI_CLOSED)

2
drivers/tty/pty.c
View file

@ -240,7 +240,7 @@ out:
} }
static void pty_set_termios(struct tty_struct *tty, static void pty_set_termios(struct tty_struct *tty,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
/* See if packet mode change of state. */ /* See if packet mode change of state. */
if (tty->link && tty->link->ctrl.packet) { if (tty->link && tty->link->ctrl.packet) {

6
drivers/tty/serial/serial_core.c
View file

@ -49,7 +49,7 @@ static struct lock_class_key port_lock_key;
#define RS485_MAX_RTS_DELAY 100 /* msecs */ #define RS485_MAX_RTS_DELAY 100 /* msecs */
static void uart_change_speed(struct tty_struct *tty, struct uart_state *state, static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
struct ktermios *old_termios); const struct ktermios *old_termios);
static void uart_wait_until_sent(struct tty_struct *tty, int timeout); static void uart_wait_until_sent(struct tty_struct *tty, int timeout);
static void uart_change_pm(struct uart_state *state, static void uart_change_pm(struct uart_state *state,
enum uart_pm_state pm_state); enum uart_pm_state pm_state);
@ -492,7 +492,7 @@ EXPORT_SYMBOL(uart_get_divisor);
/* Caller holds port mutex */ /* Caller holds port mutex */
static void uart_change_speed(struct tty_struct *tty, struct uart_state *state, static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
struct uart_port *uport = uart_port_check(state); struct uart_port *uport = uart_port_check(state);
struct ktermios *termios; struct ktermios *termios;
@ -1619,7 +1619,7 @@ static void uart_set_ldisc(struct tty_struct *tty)
} }
static void uart_set_termios(struct tty_struct *tty, static void uart_set_termios(struct tty_struct *tty,
struct ktermios *old_termios) const struct ktermios *old_termios)
{ {
struct uart_state *state = tty->driver_data; struct uart_state *state = tty->driver_data;
struct uart_port *uport; struct uart_port *uport;

3
drivers/tty/synclink_gt.c
View file

@ -707,7 +707,8 @@ static void hangup(struct tty_struct *tty)
wake_up_interruptible(&info->port.open_wait); wake_up_interruptible(&info->port.open_wait);
} }
static void set_termios(struct tty_struct *tty, struct ktermios *old_termios) static void set_termios(struct tty_struct *tty,
const struct ktermios *old_termios)
{ {
struct slgt_info *info = tty->driver_data; struct slgt_info *info = tty->driver_data;
unsigned long flags; unsigned long flags;

4
drivers/usb/class/cdc-acm.c
View file

@ -51,7 +51,7 @@ static DEFINE_IDR(acm_minors);
static DEFINE_MUTEX(acm_minors_lock); static DEFINE_MUTEX(acm_minors_lock);
static void acm_tty_set_termios(struct tty_struct *tty, static void acm_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old); const struct ktermios *termios_old);
/* /*
* acm_minors accessors * acm_minors accessors
@ -1049,7 +1049,7 @@ static int acm_tty_ioctl(struct tty_struct *tty,
} }
static void acm_tty_set_termios(struct tty_struct *tty, static void acm_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old) const struct ktermios *termios_old)
{ {
struct acm *acm = tty->driver_data; struct acm *acm = tty->driver_data;
struct ktermios *termios = &tty->termios; struct ktermios *termios = &tty->termios;

3
drivers/usb/serial/usb-serial.c
View file

@ -519,7 +519,8 @@ static int serial_ioctl(struct tty_struct *tty,
return retval; return retval;
} }
static void serial_set_termios(struct tty_struct *tty, struct ktermios *old) static void serial_set_termios(struct tty_struct *tty,
const struct ktermios *old)
{ {
struct usb_serial_port *port = tty->driver_data; struct usb_serial_port *port = tty->driver_data;

4
include/linux/tty_driver.h
View file

@ -141,7 +141,7 @@ struct serial_struct;
* *
* Optional. * Optional.
* *
* @set_termios: ``void ()(struct tty_struct *tty, struct ktermios *old)`` * @set_termios: ``void ()(struct tty_struct *tty, const struct ktermios *old)``
* *
* This routine allows the @tty driver to be notified when device's * This routine allows the @tty driver to be notified when device's
* termios settings have changed. New settings are in @tty->termios. * termios settings have changed. New settings are in @tty->termios.
@ -365,7 +365,7 @@ struct tty_operations {
unsigned int cmd, unsigned long arg); unsigned int cmd, unsigned long arg);
long (*compat_ioctl)(struct tty_struct *tty, long (*compat_ioctl)(struct tty_struct *tty,
unsigned int cmd, unsigned long arg); unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old); void (*set_termios)(struct tty_struct *tty, const struct ktermios *old);
void (*throttle)(struct tty_struct * tty); void (*throttle)(struct tty_struct * tty);
void (*unthrottle)(struct tty_struct * tty); void (*unthrottle)(struct tty_struct * tty);
void (*stop)(struct tty_struct *tty); void (*stop)(struct tty_struct *tty);

3
net/bluetooth/rfcomm/tty.c
View file

@ -855,7 +855,8 @@ static int rfcomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned l
return -ENOIOCTLCMD; return -ENOIOCTLCMD;
} }
static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old) static void rfcomm_tty_set_termios(struct tty_struct *tty,
const struct ktermios *old)
{ {
struct ktermios *new = &tty->termios; struct ktermios *new = &tty->termios;
int old_baud_rate = tty_termios_baud_rate(old); int old_baud_rate = tty_termios_baud_rate(old);