diff options
Diffstat (limited to 'drivers/serial/serial_core.c')
-rw-r--r-- | drivers/serial/serial_core.c | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 276da14..0f5a179 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -58,7 +58,8 @@ static struct lock_class_key port_lock_key; #define uart_console(port) (0) #endif -static void uart_change_speed(struct uart_state *state, struct ktermios *old_termios); +static void uart_change_speed(struct uart_state *state, + struct ktermios *old_termios); static void uart_wait_until_sent(struct tty_struct *tty, int timeout); static void uart_change_pm(struct uart_state *state, int pm_state); @@ -129,8 +130,8 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear) spin_unlock_irqrestore(&port->lock, flags); } -#define uart_set_mctrl(port,set) uart_update_mctrl(port,set,0) -#define uart_clear_mctrl(port,clear) uart_update_mctrl(port,0,clear) +#define uart_set_mctrl(port, set) uart_update_mctrl(port, set, 0) +#define uart_clear_mctrl(port, clear) uart_update_mctrl(port, 0, clear) /* * Startup the port. This will be called once per open. All calls @@ -290,7 +291,7 @@ uart_update_timeout(struct uart_port *port, unsigned int cflag, break; default: bits = 10; - break; // CS8 + break; /* CS8 */ } if (cflag & CSTOPB) @@ -622,7 +623,7 @@ static int uart_get_info(struct uart_state *state, tmp.close_delay = state->close_delay / 10; tmp.closing_wait = state->closing_wait == USF_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : - state->closing_wait / 10; + state->closing_wait / 10; tmp.custom_divisor = port->custom_divisor; tmp.hub6 = port->hub6; tmp.io_type = port->iotype; @@ -788,7 +789,8 @@ static int uart_set_info(struct uart_state *state, * We failed anyway. */ retval = -EBUSY; - goto exit; // Added to return the correct error -Ram Gupta + /* Added to return the correct error -Ram Gupta */ + goto exit; } } @@ -858,7 +860,7 @@ static int uart_get_lsr_info(struct uart_state *state, ((uart_circ_chars_pending(&state->info->xmit) > 0) && !state->info->tty->stopped && !state->info->tty->hw_stopped)) result &= ~TIOCSER_TEMT; - + return put_user(result, value); } @@ -996,8 +998,8 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg) ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { - ret = 0; - break; + ret = 0; + break; } schedule(); @@ -1137,7 +1139,8 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, return ret; } -static void uart_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +static void uart_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) { struct uart_state *state = tty->driver_data; unsigned long flags; @@ -1213,7 +1216,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp) { struct uart_state *state = tty->driver_data; struct uart_port *port; - + BUG_ON(!kernel_locked()); if (!state || !state->port) @@ -1278,8 +1281,8 @@ static void uart_close(struct tty_struct *tty, struct file *filp) uart_shutdown(state); uart_flush_buffer(tty); - tty_ldisc_flush(tty); - + tty_ldisc_flush(tty); + tty->closing = 0; state->info->tty = NULL; @@ -1341,7 +1344,7 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout) expire = jiffies + timeout; pr_debug("uart_wait_until_sent(%d), jiffies=%lu, expire=%lu...\n", - port->line, jiffies, expire); + port->line, jiffies, expire); /* * Check whether the transmitter is empty every 'char_time'. @@ -1460,10 +1463,9 @@ uart_block_til_ready(struct file *filp, struct uart_state *state) * have set TTY_IO_ERROR for a non-existant port. */ if ((filp->f_flags & O_NONBLOCK) || - (info->tty->termios->c_cflag & CLOCAL) || - (info->tty->flags & (1 << TTY_IO_ERROR))) { + (info->tty->termios->c_cflag & CLOCAL) || + (info->tty->flags & (1 << TTY_IO_ERROR))) break; - } /* * Set DTR to allow modem to know we're waiting. Do @@ -1551,8 +1553,8 @@ static struct uart_state *uart_get(struct uart_driver *drv, int line) } /* - * In 2.4.5, calls to uart_open are serialised by the BKL in - * linux/fs/devices.c:chrdev_open() + * calls to uart_open are serialised by the BKL in + * fs/char_dev.c:chrdev_open() * Note that if this fails, then uart_close() _will_ be called. * * In time, we want to scrap the "opening nonpresent ports" @@ -1674,7 +1676,7 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i) port->line, uart_type(port), mmio ? "mmio:0x" : "port:", mmio ? (unsigned long long)port->mapbase - : (unsigned long long) port->iobase, + : (unsigned long long) port->iobase, port->irq); if (port->type == PORT_UNKNOWN) { @@ -1682,8 +1684,7 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i) return ret + 1; } - if(capable(CAP_SYS_ADMIN)) - { + if (capable(CAP_SYS_ADMIN)) { mutex_lock(&state->mutex); pm_state = state->pm_state; if (pm_state) @@ -1709,12 +1710,12 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i) if (port->icount.overrun) ret += sprintf(buf + ret, " oe:%d", port->icount.overrun); - -#define INFOBIT(bit,str) \ + +#define INFOBIT(bit, str) \ if (port->mctrl & (bit)) \ strncat(stat_buf, (str), sizeof(stat_buf) - \ strlen(stat_buf) - 2) -#define STATBIT(bit,str) \ +#define STATBIT(bit, str) \ if (status & (bit)) \ strncat(stat_buf, (str), sizeof(stat_buf) - \ strlen(stat_buf) - 2) @@ -1730,7 +1731,7 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i) if (stat_buf[0]) stat_buf[0] = ' '; strcat(stat_buf, "\n"); - + ret += sprintf(buf + ret, stat_buf); } else { strcat(buf, "\n"); @@ -1992,11 +1993,11 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port) /* * Wait for the transmitter to empty. */ - for (tries = 3; !ops->tx_empty(port) && tries; tries--) { + for (tries = 3; !ops->tx_empty(port) && tries; tries--) msleep(10); - } if (!tries) - printk(KERN_ERR "%s%s%s%d: Unable to drain transmitter\n", + printk(KERN_ERR "%s%s%s%d: Unable to drain " + "transmitter\n", port->dev ? port->dev->bus_id : "", port->dev ? ": " : "", drv->dev_name, port->line); |