Added shutdown callback to disable RX and TX when there is no other client
accesing the device.
Signed-off-by: Samuel Iglesias Gonsalvez <sigles...@igalia.com>
---
drivers/ipack/devices/ipoctal.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index 3561fb52..e2ae10b 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -624,6 +624,22 @@ 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,
@@ -634,6 +650,7 @@ 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)
--
1.7.10.4
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