[PATCH] 2.5.74 synclink_cs.c

Paul Fulghum (paulkf@microgate.com)
03 Jul 2003 08:00:20 -0500


Fix arbitration between net open and tty open.

Cleanup missed bits of CUA device removal changes.

Please apply.

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

--- linux-2.5.72/drivers/char/pcmcia/synclink_cs.c 2003-06-16 08:42:24.000000000 -0500 +++ linux-2.5.72-mg/drivers/char/pcmcia/synclink_cs.c 2003-06-18 10:31:08.000000000 -0500 @@ -1,7 +1,7 @@ /* * linux/drivers/char/pcmcia/synclink_cs.c * - * $Id: synclink_cs.c,v 4.10 2003/05/13 16:06:03 paulkf Exp $ + * $Id: synclink_cs.c,v 4.13 2003/06/18 15:29:32 paulkf Exp $ * * Device driver for Microgate SyncLink PC Card * multiprotocol serial adapter. @@ -467,7 +467,6 @@ * assigned major number. May be forced as module parameter. */ static int ttymajor=0; -static int cuamajor=0; static int debug_level = 0; static int maxframe[MAX_DEVICE_COUNT] = {0,}; @@ -485,7 +484,6 @@ MODULE_PARM(break_on_load,"i"); MODULE_PARM(ttymajor,"i"); -MODULE_PARM(cuamajor,"i"); MODULE_PARM(debug_level,"i"); MODULE_PARM(maxframe,"1-" __MODULE_STRING(MAX_DEVICE_COUNT) "i"); MODULE_PARM(dosyncppp,"1-" __MODULE_STRING(MAX_DEVICE_COUNT) "i"); @@ -493,7 +491,7 @@ MODULE_LICENSE("GPL"); static char *driver_name = "SyncLink PC Card driver"; -static char *driver_version = "$Revision: 4.10 $"; +static char *driver_version = "$Revision: 4.13 $"; static struct tty_driver *serial_driver; @@ -1290,7 +1288,7 @@ (info->serial_signals & SerialSignal_DCD) ? "on" : "off"); if (info->serial_signals & SerialSignal_DCD) wake_up_interruptible(&info->open_wait); - else if (!(info->flags & ASYNC_CALLOUT_NOHUP)) { + else { if (debug_level >= DEBUG_LEVEL_ISR) printk("doing serial hangup..."); if (info->tty) @@ -2538,14 +2536,17 @@ { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; - if (!info || mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) return; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_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)) { @@ -2822,16 +2823,11 @@ info = mgslpc_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 (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) return -ENODEV; - } tty->driver_data = info; info->tty = tty; - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) - return -ENODEV; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", @@ -2879,6 +2875,8 @@ cleanup: if (retval) { + if (tty->count == 1) + info->tty = 0; /* tty layer will release tty struct */ if(info->count) info->count--; }

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

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