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| author | Daeseok Youn <daeseok.youn@gmail.com> | 2014-07-11 10:24:34 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-12 00:36:19 (GMT) |
| commit | db6fc2df9c353c9865b4c27c982efeb8fc37a523 (patch) | |
| tree | 391bbc2288ab4f6019a86bd910be54756ea28281 /drivers/staging/dgap | |
| parent | 501bcd4f9bf93d29881fddafcab1982836c41404 (diff) | |
| download | linux-db6fc2df9c353c9865b4c27c982efeb8fc37a523.tar.xz | |
staging: dgap: removes redundant null check and change paramter for dgap_tty_digisetcustombaud()
Null checks in dgap_tty_digisetcustombaud() are already done by
dgap_tty_ioctl() and change "tty" as a paramter of this function
to "ch", "bd and "un".
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/dgap')
| -rw-r--r-- | drivers/staging/dgap/dgap.c | 29 |
1 files changed, 5 insertions, 24 deletions
diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c index 3b76958..32988a8 100644 --- a/drivers/staging/dgap/dgap.c +++ b/drivers/staging/dgap/dgap.c @@ -106,8 +106,8 @@ static int dgap_set_modem_info(struct channel_t *ch, struct board_t *bd, struct unsigned int command, unsigned int __user *value); static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value); -static int dgap_tty_digisetcustombaud(struct tty_struct *tty, - int __user *new_info); +static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd, + struct un_t *un, int __user *new_info); static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un, int __user *retinfo); static int dgap_tty_tiocmget(struct tty_struct *tty); @@ -3344,32 +3344,13 @@ static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un, * * Ioctl to set the custom baud rate setting */ -static int dgap_tty_digisetcustombaud(struct tty_struct *tty, - int __user *new_info) +static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd, + struct un_t *un, int __user *new_info) { - struct board_t *bd; - struct channel_t *ch; - struct un_t *un; uint new_rate; ulong lock_flags; ulong lock_flags2; - if (!tty || tty->magic != TTY_MAGIC) - return -EFAULT; - - un = tty->driver_data; - if (!un || un->magic != DGAP_UNIT_MAGIC) - return -EFAULT; - - ch = un->un_ch; - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) - return -EFAULT; - - bd = ch->ch_bd; - if (!bd || bd->magic != DGAP_BOARD_MAGIC) - return -EFAULT; - - if (copy_from_user(&new_rate, new_info, sizeof(unsigned int))) return -EFAULT; @@ -4040,7 +4021,7 @@ static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd, case DIGI_SETCUSTOMBAUD: spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); spin_unlock_irqrestore(&bd->bd_lock, lock_flags); - return dgap_tty_digisetcustombaud(tty, uarg); + return dgap_tty_digisetcustombaud(ch, bd, un, uarg); case DIGI_RESET_PORT: dgap_firmware_reset_port(ch); |