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authorSamuel Iglesias Gonsalvez <siglesias@igalia.com>2012-12-10 05:50:08 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-15 21:24:39 -0500
commite0f8d323f34dee3f47388dc3d87e7c428b077a0d (patch)
treead0c03cfb1a579fa893adf48843cbf88dee5d26c
parentb0d17fbdacb32f9f4b9ee1ad2b8f42f6a480d842 (diff)
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.c17
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)
625 wake_up_interruptible(&channel->tty_port.open_wait); 625 wake_up_interruptible(&channel->tty_port.open_wait);
626} 626}
627 627
628static void ipoctal_shutdown(struct tty_struct *tty)
629{
630 struct ipoctal_channel *channel = tty->driver_data;
631
632 if (channel == NULL)
633 return;
634
635 iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
636 channel->rx_enable = 0;
637 iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
638 iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
639 iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
640 iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
641 clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
642}
643
628static const struct tty_operations ipoctal_fops = { 644static const struct tty_operations ipoctal_fops = {
629 .ioctl = NULL, 645 .ioctl = NULL,
630 .open = ipoctal_open, 646 .open = ipoctal_open,
@@ -635,6 +651,7 @@ static const struct tty_operations ipoctal_fops = {
635 .chars_in_buffer = ipoctal_chars_in_buffer, 651 .chars_in_buffer = ipoctal_chars_in_buffer,
636 .get_icount = ipoctal_get_icount, 652 .get_icount = ipoctal_get_icount,
637 .hangup = ipoctal_hangup, 653 .hangup = ipoctal_hangup,
654 .shutdown = ipoctal_shutdown,
638}; 655};
639 656
640static int ipoctal_probe(struct ipack_device *dev) 657static int ipoctal_probe(struct ipack_device *dev)