2.3.18 patch to fix "Trying to free nonexistent resource <02f8-02ff>"

Nick Holloway (alfie@alfie.demon.co.uk)
Sat, 11 Sep 1999 13:34:57 +0100

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I have a Thinkpad with a single serial port, and the Debian startup
scripts attempt to configure the non-existant 2nd serial port. This leads
to the message "Trying to free nonexistent resource <02f8-02ff>" being
spat out.

Here is a patch for serial.c, so that set_serial_info doesn't attempt
to free the resource that isn't allocated.

-- 
 `O O'  | Home: Nick.Holloway@alfie.demon.co.uk  http://www.alfie.demon.co.uk/
// ^ \\ | Work: Nick.Holloway@parallax.co.uk


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--- linux-2.3/drivers/char/serial.c~	Sat Sep 11 13:00:53 1999
+++ linux-2.3/drivers/char/serial.c	Sat Sep 11 13:01:41 1999
@@ -2006,7 +2006,7 @@
 	info->xmit_fifo_size = state->xmit_fifo_size =
 		new_serial.xmit_fifo_size;
 
-	if (state->port)
+	if (state->type != PORT_UNKNOWN && state->port)
 		release_region(state->port,8);
 	if (change_port || change_irq) {
 		/*


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