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Subject[PATCH] 2.5.72 synclink.c
From
Date
Fix arbitration between net open and tty open.

Cleanup unused local resulting from latest tty changes.

Please apply.

--
Paul Fulghum, paulkf@microgate.com
Microgate Corporation, http://www.microgate.com

--- linux-2.5.72/drivers/char/synclink.c 2003-06-16 08:42:25.000000000 -0500
+++ linux-2.5.72-mg/drivers/char/synclink.c 2003-06-18 10:31:00.000000000 -0500
@@ -1,7 +1,7 @@
/*
* linux/drivers/char/synclink.c
*
- * $Id: synclink.c,v 4.9 2003/05/06 21:18:51 paulkf Exp $
+ * $Id: synclink.c,v 4.12 2003/06/18 15:29:32 paulkf Exp $
*
* Device driver for Microgate SyncLink ISA and PCI
* high speed multiprotocol serial adapters.
@@ -910,7 +910,7 @@
MODULE_PARM(txholdbufs,"1-" __MODULE_STRING(MAX_TOTAL_DEVICES) "i");

static char *driver_name = "SyncLink serial driver";
-static char *driver_version = "$Revision: 4.9 $";
+static char *driver_version = "$Revision: 4.12 $";

static int synclink_init_one (struct pci_dev *dev,
const struct pci_device_id *ent);
@@ -3170,14 +3170,17 @@
{
struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;

- if (!info || mgsl_paranoia_check(info, tty->name, "mgsl_close"))
+ if (mgsl_paranoia_check(info, tty->name, "mgsl_close"))
return;

if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->count);

- if (!info->count || tty_hung_up_p(filp))
+ if (!info->count)
+ return;
+
+ if (tty_hung_up_p(filp))
goto cleanup;

if ((tty->count == 1) && (info->count != 1)) {
@@ -3493,16 +3496,11 @@
info = mgsl_device_list;
while(info && info->line != line)
info = info->next_device;
- if ( !info ){
- printk("%s(%d):Can't find specified device on open (line=%d)\n",
- __FILE__,__LINE__,line);
+ if (mgsl_paranoia_check(info, tty->name, "mgsl_open"))
return -ENODEV;
- }

tty->driver_data = info;
info->tty = tty;
- if (mgsl_paranoia_check(info, tty->name, "mgsl_open"))
- return -ENODEV;

if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_open(%s), old ref count = %d\n",
@@ -3562,6 +3560,8 @@

cleanup:
if (retval) {
+ if (tty->count == 1)
+ info->tty = 0; /* tty layer will release tty struct */
if(info->count)
info->count--;
}
@@ -4461,7 +4461,6 @@
int mgsl_init_tty(void);
int mgsl_init_tty()
{
- struct mgsl_struct *info;
serial_driver = alloc_tty_driver(mgsl_device_count);
if (!serial_driver)
return -ENOMEM;


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