diff options
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/hvc/hvc_iucv.c | 4 | ||||
-rw-r--r-- | drivers/tty/mxser.c | 15 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_mid.c | 19 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 12 | ||||
-rw-r--r-- | drivers/tty/serial/kgdboc.c | 6 | ||||
-rw-r--r-- | drivers/tty/serial/samsung.c | 5 |
6 files changed, 45 insertions, 16 deletions
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c index 2af1e5751bd6..796fbff623f6 100644 --- a/drivers/tty/hvc/hvc_iucv.c +++ b/drivers/tty/hvc/hvc_iucv.c @@ -1470,7 +1470,9 @@ out_error: */ static int __init hvc_iucv_config(char *val) { - return kstrtoul(val, 10, &hvc_iucv_devices); + if (kstrtoul(val, 10, &hvc_iucv_devices)) + pr_warn("hvc_iucv= invalid parameter value '%s'\n", val); + return 1; } diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 9d00ff5ef961..085dc8dd1327 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -861,6 +861,7 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty) struct mxser_port *info = container_of(port, struct mxser_port, port); unsigned long page; unsigned long flags; + int ret; page = __get_free_page(GFP_KERNEL); if (!page) @@ -870,9 +871,9 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty) if (!info->ioaddr || !info->type) { set_bit(TTY_IO_ERROR, &tty->flags); - free_page(page); spin_unlock_irqrestore(&info->slock, flags); - return 0; + ret = 0; + goto err_free_xmit; } info->port.xmit_buf = (unsigned char *) page; @@ -898,8 +899,10 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty) if (capable(CAP_SYS_ADMIN)) { set_bit(TTY_IO_ERROR, &tty->flags); return 0; - } else - return -ENODEV; + } + + ret = -ENODEV; + goto err_free_xmit; } /* @@ -944,6 +947,10 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty) spin_unlock_irqrestore(&info->slock, flags); return 0; +err_free_xmit: + free_page(page); + info->port.xmit_buf = NULL; + return ret; } /* diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c index efa0515139f8..e6c1791609dd 100644 --- a/drivers/tty/serial/8250/8250_mid.c +++ b/drivers/tty/serial/8250/8250_mid.c @@ -73,6 +73,11 @@ static int pnw_setup(struct mid8250 *mid, struct uart_port *p) return 0; } +static void pnw_exit(struct mid8250 *mid) +{ + pci_dev_put(mid->dma_dev); +} + static int tng_handle_irq(struct uart_port *p) { struct mid8250 *mid = p->private_data; @@ -124,6 +129,11 @@ static int tng_setup(struct mid8250 *mid, struct uart_port *p) return 0; } +static void tng_exit(struct mid8250 *mid) +{ + pci_dev_put(mid->dma_dev); +} + static int dnv_handle_irq(struct uart_port *p) { struct mid8250 *mid = p->private_data; @@ -330,9 +340,9 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, mid); return 0; + err: - if (mid->board->exit) - mid->board->exit(mid); + mid->board->exit(mid); return ret; } @@ -342,8 +352,7 @@ static void mid8250_remove(struct pci_dev *pdev) serial8250_unregister_port(mid->line); - if (mid->board->exit) - mid->board->exit(mid); + mid->board->exit(mid); } static const struct mid8250_board pnw_board = { @@ -351,6 +360,7 @@ static const struct mid8250_board pnw_board = { .freq = 50000000, .base_baud = 115200, .setup = pnw_setup, + .exit = pnw_exit, }; static const struct mid8250_board tng_board = { @@ -358,6 +368,7 @@ static const struct mid8250_board tng_board = { .freq = 38400000, .base_baud = 1843200, .setup = tng_setup, + .exit = tng_exit, }; static const struct mid8250_board dnv_board = { diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 777ef1a9591c..87567515591e 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1545,6 +1545,18 @@ static inline void start_tx_rs485(struct uart_port *port) if (!(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) serial8250_stop_rx(&up->port); + /* + * While serial8250_em485_handle_stop_tx() is a noop if + * em485->active_timer != &em485->stop_tx_timer, it might happen that + * the timer is still armed and triggers only after the current bunch of + * chars is send and em485->active_timer == &em485->stop_tx_timer again. + * So cancel the timer. There is still a theoretical race condition if + * the timer is already running and only comes around to check for + * em485->active_timer when &em485->stop_tx_timer is armed again. + */ + if (em485->active_timer == &em485->stop_tx_timer) + hrtimer_try_to_cancel(&em485->stop_tx_timer); + em485->active_timer = NULL; mcr = serial8250_in_MCR(up); diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c index f5608ad68ae1..6d4792ec9e5f 100644 --- a/drivers/tty/serial/kgdboc.c +++ b/drivers/tty/serial/kgdboc.c @@ -391,16 +391,16 @@ static int kgdboc_option_setup(char *opt) { if (!opt) { pr_err("config string not provided\n"); - return -EINVAL; + return 1; } if (strlen(opt) >= MAX_CONFIG_LEN) { pr_err("config string too long\n"); - return -ENOSPC; + return 1; } strcpy(config, opt); - return 0; + return 1; } __setup("kgdboc=", kgdboc_option_setup); diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index c7683beb3412..6040d5a6139a 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -761,11 +761,8 @@ static irqreturn_t s3c24xx_serial_tx_chars(int irq, void *id) goto out; } - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) { - spin_unlock(&port->lock); + if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); - spin_lock(&port->lock); - } if (uart_circ_empty(xmit)) s3c24xx_serial_stop_tx(port); |