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| author | Samuel Iglesias Gonsalvez <siglesias@igalia.com> | 2012-12-10 14:50:08 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-16 06:24:39 +0400 |
| commit | e0f8d323f34dee3f47388dc3d87e7c428b077a0d (patch) | |
| tree | ad0c03cfb1a579fa893adf48843cbf88dee5d26c | |
| parent | b0d17fbdacb32f9f4b9ee1ad2b8f42f6a480d842 (diff) | |
| download | linux-e0f8d323f34dee3f47388dc3d87e7c428b077a0d.tar.xz | |
ipack/devices/ipoctal: added shutdown callback
Added shutdown callback to disable RX and TX when there is no other client
accesing the device.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/ipack/devices/ipoctal.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c index 8666d2d05eef..0b3c4b8fe830 100644 --- a/drivers/ipack/devices/ipoctal.c +++ b/drivers/ipack/devices/ipoctal.c @@ -625,6 +625,22 @@ static void ipoctal_hangup(struct tty_struct *tty) wake_up_interruptible(&channel->tty_port.open_wait); } +static void ipoctal_shutdown(struct tty_struct *tty) +{ + struct ipoctal_channel *channel = tty->driver_data; + + if (channel == NULL) + return; + + iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr); + channel->rx_enable = 0; + iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr); + clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags); +} + static const struct tty_operations ipoctal_fops = { .ioctl = NULL, .open = ipoctal_open, @@ -635,6 +651,7 @@ static const struct tty_operations ipoctal_fops = { .chars_in_buffer = ipoctal_chars_in_buffer, .get_icount = ipoctal_get_icount, .hangup = ipoctal_hangup, + .shutdown = ipoctal_shutdown, }; static int ipoctal_probe(struct ipack_device *dev) |