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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/tty/synclink_gt.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/tty/synclink_gt.c')
-rw-r--r--kernel/drivers/tty/synclink_gt.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/kernel/drivers/tty/synclink_gt.c b/kernel/drivers/tty/synclink_gt.c
index 0e8c39b6c..6fc39fbfc 100644
--- a/kernel/drivers/tty/synclink_gt.c
+++ b/kernel/drivers/tty/synclink_gt.c
@@ -672,15 +672,6 @@ static int open(struct tty_struct *tty, struct file *filp)
DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count));
- /* If port is closing, signal caller to try again */
- if (info->port.flags & ASYNC_CLOSING){
- wait_event_interruptible_tty(tty, info->port.close_wait,
- !(info->port.flags & ASYNC_CLOSING));
- retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
- goto cleanup;
- }
-
mutex_lock(&info->port.mutex);
info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
@@ -1539,7 +1530,8 @@ static int hdlcdev_open(struct net_device *dev)
DBGINFO(("%s hdlcdev_open\n", dev->name));
/* generic HDLC layer open processing */
- if ((rc = hdlc_open(dev)))
+ rc = hdlc_open(dev);
+ if (rc)
return rc;
/* arbitrate between network and tty opens */
@@ -1803,7 +1795,8 @@ static int hdlcdev_init(struct slgt_info *info)
/* allocate and initialize network and HDLC layer objects */
- if (!(dev = alloc_hdlcdev(info))) {
+ dev = alloc_hdlcdev(info);
+ if (!dev) {
printk(KERN_ERR "%s hdlc device alloc failure\n", info->device_name);
return -ENOMEM;
}
@@ -1824,7 +1817,8 @@ static int hdlcdev_init(struct slgt_info *info)
hdlc->xmit = hdlcdev_xmit;
/* register objects with HDLC layer */
- if ((rc = register_hdlc_device(dev))) {
+ rc = register_hdlc_device(dev);
+ if (rc) {
printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__);
free_netdev(dev);
return rc;
@@ -1879,7 +1873,8 @@ static void rx_async(struct slgt_info *info)
stat = 0;
- if ((status = *(p+1) & (BIT1 + BIT0))) {
+ status = *(p + 1) & (BIT1 + BIT0);
+ if (status) {
if (status & BIT1)
icount->parity++;
else if (status & BIT0)
@@ -3316,9 +3311,8 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
}
cd = tty_port_carrier_raised(port);
-
- if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd ))
- break;
+ if (do_clocal || cd)
+ break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3755,7 +3749,8 @@ static void slgt_cleanup(void)
if (serial_driver) {
for (info=slgt_device_list ; info != NULL ; info=info->next_device)
tty_unregister_device(serial_driver, info->line);
- if ((rc = tty_unregister_driver(serial_driver)))
+ rc = tty_unregister_driver(serial_driver);
+ if (rc)
DBGERR(("tty_unregister_driver error=%d\n", rc));
put_tty_driver(serial_driver);
}