diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 19:59:04 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 19:59:04 -0700 |
commit | 73ecf3a6e3f0206bf56a0fefe3b3eda042fb7034 (patch) | |
tree | 866f0ebb2b148479e93b5ac955097b1cc94ceb4e /drivers/char/amiserial.c | |
parent | b9da0571050c09863e59f94d0b8594a290d61b88 (diff) | |
parent | cd3ecad19aea8debae9a48b53de2ec7a571f24e9 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (49 commits)
serial8250: ratelimit "too much work" error
serial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster
serial: abstraction for 8250 legacy ports
serial/imx: check that the buffer is non-empty before sending it out
serial: mfd: add more baud rates support
jsm: Remove the uart port on errors
Alchemy: Add UART PM methods.
8250: allow platforms to override PM hook.
altera_uart: Don't use plain integer as NULL pointer
altera_uart: Fix missing prototype for registering an early console
altera_uart: Fixup type usage of port flags
altera_uart: Make it possible to use Altera UART and 8250 ports together
altera_uart: Add support for different address strides
altera_uart: Add support for getting mapbase and IRQ from resources
altera_uart: Add support for polling mode (IRQ-less)
serial: Factor out uart_poll_timeout() from 8250 driver
serial: mark the 8250 driver as maintained
serial: 8250: Don't delay after transmitter is ready.
tty: MAINTAINERS: add drivers/serial/jsm/ as maintained driver
vcs: invoke the vt update callback when /dev/vcs* is written to
...
Diffstat (limited to 'drivers/char/amiserial.c')
-rw-r--r-- | drivers/char/amiserial.c | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index a11c8c9ca3d4..b0a70461a12c 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1263,6 +1263,36 @@ static int rs_break(struct tty_struct *tty, int break_state) return 0; } +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int rs_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct async_struct *info = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + local_irq_save(flags); + cnow = info->state->icount; + local_irq_restore(flags); + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} static int rs_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) @@ -1332,31 +1362,6 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, } /* NOTREACHED */ - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - local_irq_save(flags); - cnow = info->state->icount; - local_irq_restore(flags); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - if (copy_to_user(argp, &icount, sizeof(icount))) - return -EFAULT; - return 0; case TIOCSERGWILD: case TIOCSERSWILD: /* "setserial -W" is called in Debian boot */ @@ -1958,6 +1963,7 @@ static const struct tty_operations serial_ops = { .wait_until_sent = rs_wait_until_sent, .tiocmget = rs_tiocmget, .tiocmset = rs_tiocmset, + .get_icount = rs_get_icount, .proc_fops = &rs_proc_fops, }; |