Hello,
It's possible to unplug usb device and do tiocmset() and tiocmget() without
valid interface in pl2303 module.
The patch below check this and return -ENODEV if interface was removed.
(the patch is against bk of 2005-04-11.)
diff -purN linux-05-04-11/drivers/usb/serial/pl2303.c
linux-05-04-11.usb/drivers/usb/serial/pl2303.c
--- linux-05-04-11/drivers/usb/serial/pl2303.c 2005-04-11 10:58:41.000000000
-0300
+++ linux-05-04-11.usb/drivers/usb/serial/pl2303.c 2005-04-11
11:09:04.000000000 -0300
@@ -677,6 +677,9 @@ static int pl2303_tiocmset (struct usb_s
unsigned long flags;
u8 control;
+ if(!usb_get_intfdata(port->serial->interface))
+ return -ENODEV;
+
spin_lock_irqsave (&priv->lock, flags);
if (set & TIOCM_RTS)
priv->line_control |= CONTROL_RTS;
@@ -702,6 +705,9 @@ static int pl2303_tiocmget (struct usb_s
dbg("%s (%d)", __FUNCTION__, port->number);
+ if(!usb_get_intfdata(port->serial->interface))
+ return -ENODEV;
+
spin_lock_irqsave (&priv->lock, flags);
mcr = priv->line_control;
status = priv->line_status;
--
Fl�vio Bruno Leitner <[EMAIL PROTECTED]>
[0EA2 7F40 4CF4 1E63 4AF6 33C0 3E10 E205 F251 EDDA]
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