diff options
| author | Johan Hovold <johan@kernel.org> | 2016-11-08 13:28:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 13:16:57 +0100 |
| commit | bb2d387c4d90f5b400b94a0fcb5aaef31dfc0789 (patch) | |
| tree | 972a8de60bd4e9df7983b9bed0701d6954e9bff1 /drivers/usb/class/cdc-acm.c | |
| parent | 04cbf3832bbe21ac473e6b79571fce0c7f10a087 (diff) | |
USB: cdc-acm: use get_icount tty operation
Use the tty get_icount operation instead of implementing TIOCGICOUNT
directly.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 5535377f540e..5112c2f88d3a 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -968,25 +968,20 @@ static int wait_serial_change(struct acm *acm, unsigned long arg) return rv; } -static int get_serial_usage(struct acm *acm, - struct serial_icounter_struct __user *count) +static int acm_tty_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) { - struct serial_icounter_struct icount; - int rv = 0; - - memset(&icount, 0, sizeof(icount)); - icount.dsr = acm->iocount.dsr; - icount.rng = acm->iocount.rng; - icount.dcd = acm->iocount.dcd; - icount.frame = acm->iocount.frame; - icount.overrun = acm->iocount.overrun; - icount.parity = acm->iocount.parity; - icount.brk = acm->iocount.brk; + struct acm *acm = tty->driver_data; - if (copy_to_user(count, &icount, sizeof(icount)) > 0) - rv = -EFAULT; + icount->dsr = acm->iocount.dsr; + icount->rng = acm->iocount.rng; + icount->dcd = acm->iocount.dcd; + icount->frame = acm->iocount.frame; + icount->overrun = acm->iocount.overrun; + icount->parity = acm->iocount.parity; + icount->brk = acm->iocount.brk; - return rv; + return 0; } static int acm_tty_ioctl(struct tty_struct *tty, @@ -1011,9 +1006,6 @@ static int acm_tty_ioctl(struct tty_struct *tty, rv = wait_serial_change(acm, arg); usb_autopm_put_interface(acm->control); break; - case TIOCGICOUNT: - rv = get_serial_usage(acm, (struct serial_icounter_struct __user *) arg); - break; } return rv; @@ -1924,6 +1916,7 @@ static const struct tty_operations acm_ops = { .set_termios = acm_tty_set_termios, .tiocmget = acm_tty_tiocmget, .tiocmset = acm_tty_tiocmset, + .get_icount = acm_tty_get_icount, }; /* |