diff options
Diffstat (limited to 'drivers/char/mxser.c')
| -rw-r--r-- | drivers/char/mxser.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index e0c5d2a6904..d2692d443f7 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -33,12 +33,12 @@ #include <linux/string.h> #include <linux/fcntl.h> #include <linux/ptrace.h> -#include <linux/gfp.h> #include <linux/ioport.h> #include <linux/mm.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/bitops.h> +#include <linux/slab.h> #include <asm/system.h> #include <asm/io.h> @@ -1011,6 +1011,7 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) if (!info->ioaddr) return -ENODEV; + tty->driver_data = info; return tty_port_open(&info->port, tty, filp); } @@ -1074,7 +1075,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) struct mxser_port *info = tty->driver_data; struct tty_port *port = &info->port; - if (tty->index == MXSER_PORTS) + if (tty->index == MXSER_PORTS || info == NULL) return; if (tty_port_close_start(port, tty, filp) == 0) return; @@ -1768,7 +1769,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, int len, lsr; len = mxser_chars_in_buffer(tty); - spin_lock(&info->slock); + spin_lock_irq(&info->slock); lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE; spin_unlock_irq(&info->slock); len += (lsr ? 0 : 1); @@ -1778,12 +1779,12 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, case MOXA_ASPP_MON: { int mcr, status; - spin_lock(&info->slock); + spin_lock_irq(&info->slock); status = mxser_get_msr(info->ioaddr, 1, tty->index); mxser_check_modem_status(tty, info, status); mcr = inb(info->ioaddr + UART_MCR); - spin_unlock(&info->slock); + spin_unlock_irq(&info->slock); if (mcr & MOXA_MUST_MCR_XON_FLAG) info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; |