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    Subject[PATCH] const struct tty_operations
    Date
    From
    As part of an SMP cleanliness pass over UML, I consted a bunch of
    structures in order to not have to document their locking. One of
    these structures was a struct tty_operations. In order to const it in
    UML without introducing compiler complaints, the declaration of
    tty_set_operations needs to be changed, and then all of its callers
    need to be fixed.

    This patch declares all struct tty_operations in the tree as const.
    In all cases, they are static and used only as input to
    tty_set_operations. As an extra check, I ran an i386 allyesconfig
    build which produced no extra warnings.

    53 drivers are affected. I checked the history of a bunch of them,
    and in most cases, there have been only a handful of maintenance
    changes in the last six months. serial_core.c was the busiest one
    that I looked at.

    Signed-off-by: Jeff Dike <jdike@addtoit.com>

    Index: linux-2.6.17/drivers/char/tty_io.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/tty_io.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/tty_io.c 2006-08-15 16:17:53.000000000 -0400
    @@ -3011,7 +3011,8 @@ void put_tty_driver(struct tty_driver *d
    kfree(driver);
    }

    -void tty_set_operations(struct tty_driver *driver, struct tty_operations *op)
    +void tty_set_operations(struct tty_driver *driver,
    + const struct tty_operations *op)
    {
    driver->open = op->open;
    driver->close = op->close;
    Index: linux-2.6.17/include/linux/tty_driver.h
    ===================================================================
    --- linux-2.6.17.orig/include/linux/tty_driver.h 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/include/linux/tty_driver.h 2006-08-15 12:53:39.000000000 -0400
    @@ -219,7 +219,8 @@ extern struct list_head tty_drivers;

    struct tty_driver *alloc_tty_driver(int lines);
    void put_tty_driver(struct tty_driver *driver);
    -void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
    +void tty_set_operations(struct tty_driver *driver,
    + const struct tty_operations *op);

    /* tty driver magic number */
    #define TTY_DRIVER_MAGIC 0x5402
    Index: linux-2.6.17/arch/alpha/kernel/srmcons.c
    ===================================================================
    --- linux-2.6.17.orig/arch/alpha/kernel/srmcons.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/alpha/kernel/srmcons.c 2006-08-15 12:53:39.000000000 -0400
    @@ -229,7 +229,7 @@ srmcons_close(struct tty_struct *tty, st

    static struct tty_driver *srmcons_driver;

    -static struct tty_operations srmcons_ops = {
    +static const struct tty_operations srmcons_ops = {
    .open = srmcons_open,
    .close = srmcons_close,
    .write = srmcons_write,
    Index: linux-2.6.17/arch/ia64/hp/sim/simserial.c
    ===================================================================
    --- linux-2.6.17.orig/arch/ia64/hp/sim/simserial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/ia64/hp/sim/simserial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -940,7 +940,7 @@ static inline void show_serial_version(v
    printk(KERN_INFO " no serial options enabled\n");
    }

    -static struct tty_operations hp_ops = {
    +static const struct tty_operations hp_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/arch/ppc/4xx_io/serial_sicc.c
    ===================================================================
    --- linux-2.6.17.orig/arch/ppc/4xx_io/serial_sicc.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/ppc/4xx_io/serial_sicc.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1720,7 +1720,7 @@ static int siccuart_open(struct tty_stru
    return 0;
    }

    -static struct tty_operations sicc_ops = {
    +static const struct tty_operations sicc_ops = {
    .open = siccuart_open,
    .close = siccuart_close,
    .write = siccuart_write,
    Index: linux-2.6.17/arch/um/drivers/line.c
    ===================================================================
    --- linux-2.6.17.orig/arch/um/drivers/line.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/um/drivers/line.c 2006-08-15 16:17:58.000000000 -0400
    @@ -642,9 +642,9 @@ int line_remove(struct line *lines, unsi
    }

    struct tty_driver *line_register_devfs(struct lines *set,
    - struct line_driver *line_driver,
    - struct tty_operations *ops, struct line *lines,
    - int nlines)
    + struct line_driver *line_driver,
    + const struct tty_operations *ops,
    + struct line *lines, int nlines)
    {
    int i;
    struct tty_driver *driver = alloc_tty_driver(nlines);
    Index: linux-2.6.17/arch/v850/kernel/memcons.c
    ===================================================================
    --- linux-2.6.17.orig/arch/v850/kernel/memcons.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/v850/kernel/memcons.c 2006-08-15 12:53:39.000000000 -0400
    @@ -104,7 +104,7 @@ int memcons_tty_chars_in_buffer (struct
    return 0;
    }

    -static struct tty_operations ops = {
    +static const struct tty_operations ops = {
    .open = memcons_tty_open,
    .write = memcons_tty_write,
    .write_room = memcons_tty_write_room,
    Index: linux-2.6.17/arch/v850/kernel/simcons.c
    ===================================================================
    --- linux-2.6.17.orig/arch/v850/kernel/simcons.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/v850/kernel/simcons.c 2006-08-15 12:53:39.000000000 -0400
    @@ -77,7 +77,7 @@ int simcons_tty_chars_in_buffer (struct
    return 0;
    }

    -static struct tty_operations ops = {
    +static const struct tty_operations ops = {
    .open = simcons_tty_open,
    .write = simcons_tty_write,
    .write_room = simcons_tty_write_room,
    Index: linux-2.6.17/arch/xtensa/platform-iss/console.c
    ===================================================================
    --- linux-2.6.17.orig/arch/xtensa/platform-iss/console.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/xtensa/platform-iss/console.c 2006-08-15 12:53:39.000000000 -0400
    @@ -191,7 +191,7 @@ static int rs_read_proc(char *page, char
    }


    -static struct tty_operations serial_ops = {
    +static const struct tty_operations serial_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/char/amiserial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/amiserial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/amiserial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1958,7 +1958,7 @@ static void show_serial_version(void)
    }


    -static struct tty_operations serial_ops = {
    +static const struct tty_operations serial_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/char/cyclades.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/cyclades.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/cyclades.c 2006-08-15 12:53:39.000000000 -0400
    @@ -5205,7 +5205,7 @@ done:
    extra ports are ignored.
    */

    -static struct tty_operations cy_ops = {
    +static const struct tty_operations cy_ops = {
    .open = cy_open,
    .close = cy_close,
    .write = cy_write,
    Index: linux-2.6.17/drivers/char/epca.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/epca.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/epca.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1125,7 +1125,7 @@ static void __exit epca_module_exit(void

    module_exit(epca_module_exit);

    -static struct tty_operations pc_ops = {
    +static const struct tty_operations pc_ops = {
    .open = pc_open,
    .close = pc_close,
    .write = pc_write,
    Index: linux-2.6.17/drivers/char/esp.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/esp.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/esp.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2376,7 +2376,7 @@ static inline int autoconfig(struct esp_
    return (port_detected);
    }

    -static struct tty_operations esp_ops = {
    +static const struct tty_operations esp_ops = {
    .open = esp_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/char/hvc_console.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/hvc_console.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/hvc_console.c 2006-08-15 12:53:39.000000000 -0400
    @@ -696,7 +696,7 @@ int khvcd(void *unused)
    return 0;
    }

    -static struct tty_operations hvc_ops = {
    +static const struct tty_operations hvc_ops = {
    .open = hvc_open,
    .close = hvc_close,
    .write = hvc_write,
    Index: linux-2.6.17/drivers/char/hvcs.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/hvcs.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/hvcs.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1306,7 +1306,7 @@ static int hvcs_chars_in_buffer(struct t
    return hvcsd->chars_in_buffer;
    }

    -static struct tty_operations hvcs_ops = {
    +static const struct tty_operations hvcs_ops = {
    .open = hvcs_open,
    .close = hvcs_close,
    .hangup = hvcs_hangup,
    Index: linux-2.6.17/drivers/char/hvsi.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/hvsi.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/hvsi.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1130,7 +1130,7 @@ static int hvsi_tiocmset(struct tty_stru
    }


    -static struct tty_operations hvsi_ops = {
    +static const struct tty_operations hvsi_ops = {
    .open = hvsi_open,
    .close = hvsi_close,
    .write = hvsi_write,
    Index: linux-2.6.17/drivers/char/ip2/ip2main.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/ip2/ip2main.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/ip2/ip2main.c 2006-08-15 12:53:39.000000000 -0400
    @@ -457,7 +457,7 @@ cleanup_module(void)
    }
    #endif /* MODULE */

    -static struct tty_operations ip2_ops = {
    +static const struct tty_operations ip2_ops = {
    .open = ip2_open,
    .close = ip2_close,
    .write = ip2_write,
    Index: linux-2.6.17/drivers/char/isicom.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/isicom.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/isicom.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1550,7 +1550,7 @@ static void isicom_unregister_ioregion(s
    board->base = 0;
    }

    -static struct tty_operations isicom_ops = {
    +static const struct tty_operations isicom_ops = {
    .open = isicom_open,
    .close = isicom_close,
    .write = isicom_write,
    Index: linux-2.6.17/drivers/char/istallion.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/istallion.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/istallion.c 2006-08-15 12:53:39.000000000 -0400
    @@ -4654,7 +4654,7 @@ static int stli_memioctl(struct inode *i
    return rc;
    }

    -static struct tty_operations stli_ops = {
    +static const struct tty_operations stli_ops = {
    .open = stli_open,
    .close = stli_close,
    .write = stli_write,
    Index: linux-2.6.17/drivers/char/moxa.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/moxa.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/moxa.c 2006-08-15 12:53:39.000000000 -0400
    @@ -280,7 +280,7 @@ static int moxa_get_serial_info(struct m
    static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
    static void MoxaSetFifo(int port, int enable);

    -static struct tty_operations moxa_ops = {
    +static const struct tty_operations moxa_ops = {
    .open = moxa_open,
    .close = moxa_close,
    .write = moxa_write,
    Index: linux-2.6.17/drivers/char/mxser.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/mxser.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/mxser.c 2006-08-15 12:53:39.000000000 -0400
    @@ -453,7 +453,7 @@ static int CheckIsMoxaMust(int io)

    /* above is modified by Victor Yu. 08-15-2002 */

    -static struct tty_operations mxser_ops = {
    +static const struct tty_operations mxser_ops = {
    .open = mxser_open,
    .close = mxser_close,
    .write = mxser_write,
    Index: linux-2.6.17/drivers/char/pcmcia/synclink_cs.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/pcmcia/synclink_cs.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/pcmcia/synclink_cs.c 2006-08-15 12:53:39.000000000 -0400
    @@ -3010,7 +3010,7 @@ static struct pcmcia_driver mgslpc_drive
    .resume = mgslpc_resume,
    };

    -static struct tty_operations mgslpc_ops = {
    +static const struct tty_operations mgslpc_ops = {
    .open = mgslpc_open,
    .close = mgslpc_close,
    .write = mgslpc_write,
    Index: linux-2.6.17/drivers/char/pty.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/pty.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/pty.c 2006-08-15 12:53:39.000000000 -0400
    @@ -224,7 +224,7 @@ static void pty_set_termios(struct tty_s
    tty->termios->c_cflag |= (CS8 | CREAD);
    }

    -static struct tty_operations pty_ops = {
    +static const struct tty_operations pty_ops = {
    .open = pty_open,
    .close = pty_close,
    .write = pty_write,
    Index: linux-2.6.17/drivers/char/rio/rio_linux.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/rio/rio_linux.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/rio/rio_linux.c 2006-08-15 12:53:39.000000000 -0400
    @@ -727,7 +727,7 @@ static struct vpd_prom *get_VPD_PROM(str
    return &vpdp;
    }

    -static struct tty_operations rio_ops = {
    +static const struct tty_operations rio_ops = {
    .open = riotopen,
    .close = gs_close,
    .write = gs_write,
    Index: linux-2.6.17/drivers/char/riscom8.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/riscom8.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/riscom8.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1597,7 +1597,7 @@ static void do_softint(void *private_)
    }
    }

    -static struct tty_operations riscom_ops = {
    +static const struct tty_operations riscom_ops = {
    .open = rc_open,
    .close = rc_close,
    .write = rc_write,
    Index: linux-2.6.17/drivers/char/rocket.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/rocket.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/rocket.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2334,7 +2334,7 @@ static int __init init_ISA(int i)
    return (1);
    }

    -static struct tty_operations rocket_ops = {
    +static const struct tty_operations rocket_ops = {
    .open = rp_open,
    .close = rp_close,
    .write = rp_write,
    Index: linux-2.6.17/drivers/char/ser_a2232.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/ser_a2232.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/ser_a2232.c 2006-08-15 12:53:39.000000000 -0400
    @@ -661,7 +661,7 @@ static void a2232_init_portstructs(void)
    }
    }

    -static struct tty_operations a2232_ops = {
    +static const struct tty_operations a2232_ops = {
    .open = a2232_open,
    .close = gs_close,
    .write = gs_write,
    Index: linux-2.6.17/drivers/char/serial167.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/serial167.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/serial167.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2158,7 +2158,7 @@ mvme167_serial_console_setup(int cflag)
    rcor >> 5, rbpr);
    } /* serial_console_init */

    -static struct tty_operations cy_ops = {
    +static const struct tty_operations cy_ops = {
    .open = cy_open,
    .close = cy_close,
    .write = cy_write,
    Index: linux-2.6.17/drivers/char/specialix.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/specialix.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/specialix.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2372,7 +2372,7 @@ static void do_softint(void *private_)
    func_exit();
    }

    -static struct tty_operations sx_ops = {
    +static const struct tty_operations sx_ops = {
    .open = sx_open,
    .close = sx_close,
    .write = sx_write,
    Index: linux-2.6.17/drivers/char/stallion.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/stallion.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/stallion.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2993,7 +2993,7 @@ static int stl_memioctl(struct inode *ip
    return(rc);
    }

    -static struct tty_operations stl_ops = {
    +static const struct tty_operations stl_ops = {
    .open = stl_open,
    .close = stl_close,
    .write = stl_write,
    Index: linux-2.6.17/drivers/char/sx.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/sx.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/sx.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2226,7 +2226,7 @@ static int probe_si (struct sx_board *bo
    return 1;
    }

    -static struct tty_operations sx_ops = {
    +static const struct tty_operations sx_ops = {
    .break_ctl = sx_break,
    .open = sx_open,
    .close = gs_close,
    Index: linux-2.6.17/drivers/char/synclink.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/synclink.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/synclink.c 2006-08-15 12:53:39.000000000 -0400
    @@ -4360,7 +4360,7 @@ static struct mgsl_struct* mgsl_allocate

    } /* end of mgsl_allocate_device()*/

    -static struct tty_operations mgsl_ops = {
    +static const struct tty_operations mgsl_ops = {
    .open = mgsl_open,
    .close = mgsl_close,
    .write = mgsl_write,
    Index: linux-2.6.17/drivers/char/synclink_gt.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/synclink_gt.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/synclink_gt.c 2006-08-15 12:53:39.000000000 -0400
    @@ -3434,7 +3434,7 @@ static void __devexit remove_one(struct
    {
    }

    -static struct tty_operations ops = {
    +static const struct tty_operations ops = {
    .open = open,
    .close = close,
    .write = write,
    Index: linux-2.6.17/drivers/char/synclinkmp.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/synclinkmp.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/synclinkmp.c 2006-08-15 12:53:39.000000000 -0400
    @@ -3929,7 +3929,7 @@ void device_init(int adapter_num, struct
    }
    }

    -static struct tty_operations ops = {
    +static const struct tty_operations ops = {
    .open = open,
    .close = close,
    .write = write,
    Index: linux-2.6.17/drivers/char/viocons.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/viocons.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/viocons.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1077,7 +1077,7 @@ static int send_open(HvLpIndex remoteLp,
    0, 0, 0, 0);
    }

    -static struct tty_operations serial_ops = {
    +static const struct tty_operations serial_ops = {
    .open = viotty_open,
    .close = viotty_close,
    .write = viotty_write,
    Index: linux-2.6.17/drivers/char/vme_scc.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/vme_scc.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/vme_scc.c 2006-08-15 12:53:39.000000000 -0400
    @@ -113,7 +113,7 @@ static struct real_driver scc_real_drive
    };


    -static struct tty_operations scc_ops = {
    +static const struct tty_operations scc_ops = {
    .open = scc_open,
    .close = gs_close,
    .write = gs_write,
    Index: linux-2.6.17/drivers/char/vt.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/char/vt.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/char/vt.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2639,7 +2639,7 @@ static int __init con_init(void)
    }
    console_initcall(con_init);

    -static struct tty_operations con_ops = {
    +static const struct tty_operations con_ops = {
    .open = con_open,
    .close = con_close,
    .write = con_write,
    Index: linux-2.6.17/drivers/isdn/capi/capi.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/isdn/capi/capi.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/isdn/capi/capi.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1298,7 +1298,7 @@ static int capinc_tty_read_proc(char *pa

    static struct tty_driver *capinc_tty_driver;

    -static struct tty_operations capinc_ops = {
    +static const struct tty_operations capinc_ops = {
    .open = capinc_tty_open,
    .close = capinc_tty_close,
    .write = capinc_tty_write,
    Index: linux-2.6.17/drivers/isdn/gigaset/interface.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/isdn/gigaset/interface.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/isdn/gigaset/interface.c 2006-08-15 12:53:39.000000000 -0400
    @@ -134,7 +134,7 @@ static int if_tiocmset(struct tty_struc
    static int if_write(struct tty_struct *tty,
    const unsigned char *buf, int count);

    -static struct tty_operations if_ops = {
    +static const struct tty_operations if_ops = {
    .open = if_open,
    .close = if_close,
    .ioctl = if_ioctl,
    Index: linux-2.6.17/drivers/isdn/i4l/isdn_tty.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/isdn/i4l/isdn_tty.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/isdn/i4l/isdn_tty.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1860,7 +1860,7 @@ modem_write_profile(atemu * m)
    send_sig(SIGIO, dev->profd, 1);
    }

    -static struct tty_operations modem_ops = {
    +static const struct tty_operations modem_ops = {
    .open = isdn_tty_open,
    .close = isdn_tty_close,
    .write = isdn_tty_write,
    Index: linux-2.6.17/drivers/s390/char/con3215.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/s390/char/con3215.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/s390/char/con3215.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1103,7 +1103,7 @@ tty3215_start(struct tty_struct *tty)
    }
    }

    -static struct tty_operations tty3215_ops = {
    +static const struct tty_operations tty3215_ops = {
    .open = tty3215_open,
    .close = tty3215_close,
    .write = tty3215_write,
    Index: linux-2.6.17/drivers/s390/char/sclp_tty.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/s390/char/sclp_tty.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/s390/char/sclp_tty.c 2006-08-15 12:53:39.000000000 -0400
    @@ -711,7 +711,7 @@ static struct sclp_register sclp_input_e
    .receiver_fn = sclp_tty_receiver
    };

    -static struct tty_operations sclp_ops = {
    +static const struct tty_operations sclp_ops = {
    .open = sclp_tty_open,
    .close = sclp_tty_close,
    .write = sclp_tty_write,
    Index: linux-2.6.17/drivers/s390/char/sclp_vt220.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/s390/char/sclp_vt220.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/s390/char/sclp_vt220.c 2006-08-15 12:53:39.000000000 -0400
    @@ -655,7 +655,7 @@ __sclp_vt220_init(int early)
    return 0;
    }

    -static struct tty_operations sclp_vt220_ops = {
    +static const struct tty_operations sclp_vt220_ops = {
    .open = sclp_vt220_open,
    .close = sclp_vt220_close,
    .write = sclp_vt220_write,
    Index: linux-2.6.17/drivers/s390/char/tty3270.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/s390/char/tty3270.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/s390/char/tty3270.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1738,7 +1738,7 @@ tty3270_ioctl(struct tty_struct *tty, st
    return kbd_ioctl(tp->kbd, file, cmd, arg);
    }

    -static struct tty_operations tty3270_ops = {
    +static const struct tty_operations tty3270_ops = {
    .open = tty3270_open,
    .close = tty3270_close,
    .write = tty3270_write,
    Index: linux-2.6.17/drivers/sbus/char/aurora.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/sbus/char/aurora.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/sbus/char/aurora.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2187,7 +2187,7 @@ static void do_softint(void *private_)
    #endif
    }

    -static struct tty_operations aurora_ops = {
    +static const struct tty_operations aurora_ops = {
    .open = aurora_open,
    .close = aurora_close,
    .write = aurora_write,
    Index: linux-2.6.17/drivers/serial/68328serial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/serial/68328serial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/serial/68328serial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1378,7 +1378,7 @@ void startup_console(void)
    #endif /* CONFIG_PM_LEGACY */


    -static struct tty_operations rs_ops = {
    +static const struct tty_operations rs_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/serial/68360serial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/serial/68360serial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/serial/68360serial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2424,7 +2424,7 @@ long console_360_init(long kmem_start, l
    */
    static int baud_idx;

    -static struct tty_operations rs_360_ops = {
    +static const struct tty_operations rs_360_ops = {
    .owner = THIS_MODULE,
    .open = rs_360_open,
    .close = rs_360_close,
    Index: linux-2.6.17/drivers/serial/crisv10.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/serial/crisv10.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/serial/crisv10.c 2006-08-15 12:53:39.000000000 -0400
    @@ -4825,7 +4825,7 @@ show_serial_version(void)

    /* rs_init inits the driver at boot (using the module_init chain) */

    -static struct tty_operations rs_ops = {
    +static const struct tty_operations rs_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/serial/mcfserial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/serial/mcfserial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/serial/mcfserial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1666,7 +1666,7 @@ static void show_serial_version(void)
    printk(mcfrs_drivername);
    }

    -static struct tty_operations mcfrs_ops = {
    +static const struct tty_operations mcfrs_ops = {
    .open = mcfrs_open,
    .close = mcfrs_close,
    .write = mcfrs_write,
    Index: linux-2.6.17/drivers/serial/serial_core.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/serial/serial_core.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/serial/serial_core.c 2006-08-15 12:53:39.000000000 -0400
    @@ -2097,7 +2097,7 @@ uart_configure_port(struct uart_driver *
    }
    }

    -static struct tty_operations uart_ops = {
    +static const struct tty_operations uart_ops = {
    .open = uart_open,
    .close = uart_close,
    .write = uart_write,
    Index: linux-2.6.17/drivers/tc/zs.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/tc/zs.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/tc/zs.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1701,7 +1701,7 @@ static void __init probe_sccs(void)
    spin_unlock_irqrestore(&zs_lock, flags);
    }

    -static struct tty_operations serial_ops = {
    +static const struct tty_operations serial_ops = {
    .open = rs_open,
    .close = rs_close,
    .write = rs_write,
    Index: linux-2.6.17/drivers/usb/class/cdc-acm.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/usb/class/cdc-acm.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/usb/class/cdc-acm.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1120,7 +1120,7 @@ static struct usb_driver acm_driver = {
    * TTY driver structures.
    */

    -static struct tty_operations acm_ops = {
    +static const struct tty_operations acm_ops = {
    .open = acm_tty_open,
    .close = acm_tty_close,
    .write = acm_tty_write,
    Index: linux-2.6.17/drivers/usb/gadget/serial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/usb/gadget/serial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/usb/gadget/serial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -271,7 +271,7 @@ static unsigned int use_acm = GS_DEFAULT


    /* tty driver struct */
    -static struct tty_operations gs_tty_ops = {
    +static const struct tty_operations gs_tty_ops = {
    .open = gs_open,
    .close = gs_close,
    .write = gs_write,
    Index: linux-2.6.17/drivers/usb/serial/usb-serial.c
    ===================================================================
    --- linux-2.6.17.orig/drivers/usb/serial/usb-serial.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/drivers/usb/serial/usb-serial.c 2006-08-15 12:53:39.000000000 -0400
    @@ -1013,7 +1013,7 @@ void usb_serial_disconnect(struct usb_in
    dev_info(dev, "device disconnected\n");
    }

    -static struct tty_operations serial_ops = {
    +static const struct tty_operations serial_ops = {
    .open = serial_open,
    .close = serial_close,
    .write = serial_write,
    Index: linux-2.6.17/net/bluetooth/rfcomm/tty.c
    ===================================================================
    --- linux-2.6.17.orig/net/bluetooth/rfcomm/tty.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/net/bluetooth/rfcomm/tty.c 2006-08-15 12:53:39.000000000 -0400
    @@ -992,7 +992,7 @@ static int rfcomm_tty_tiocmset(struct tt

    /* ---- TTY structure ---- */

    -static struct tty_operations rfcomm_ops = {
    +static const struct tty_operations rfcomm_ops = {
    .open = rfcomm_tty_open,
    .close = rfcomm_tty_close,
    .write = rfcomm_tty_write,
    Index: linux-2.6.17/net/irda/ircomm/ircomm_tty.c
    ===================================================================
    --- linux-2.6.17.orig/net/irda/ircomm/ircomm_tty.c 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/net/irda/ircomm/ircomm_tty.c 2006-08-15 12:53:39.000000000 -0400
    @@ -79,7 +79,7 @@ static struct tty_driver *driver;

    hashbin_t *ircomm_tty = NULL;

    -static struct tty_operations ops = {
    +static const struct tty_operations ops = {
    .open = ircomm_tty_open,
    .close = ircomm_tty_close,
    .write = ircomm_tty_write,
    Index: linux-2.6.17/arch/um/include/line.h
    ===================================================================
    --- linux-2.6.17.orig/arch/um/include/line.h 2006-08-15 12:53:33.000000000 -0400
    +++ linux-2.6.17/arch/um/include/line.h 2006-08-15 16:17:58.000000000 -0400
    @@ -91,10 +91,9 @@ extern int line_setup_irq(int fd, int in
    void *data);
    extern void line_close_chan(struct line *line);
    extern struct tty_driver * line_register_devfs(struct lines *set,
    - struct line_driver *line_driver,
    - struct tty_operations *driver,
    - struct line *lines,
    - int nlines);
    + struct line_driver *line_driver,
    + const struct tty_operations *driver,
    + struct line *lines, int nlines);
    extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
    extern void close_lines(struct line *lines, int nlines);

    -
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