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[POWERPC] of_serial: Ignore unknown serial port 

Current of_serial driver assumes unknown serial port to be 8250.  But
this behavior may cause fatal problems when the serial port is not
8250.  This corrects probe routine to ignore unknown serial port.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Ishizaki Kou 2007-05-31 19:30:33 +10:00 committed by Paul Mackerras
parent f716a425c1
commit 1558f9b44e
1 changed files with 2 additions and 4 deletions
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6
drivers/serial/of_serial.c
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@ -75,15 +75,13 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
goto out;
switch (port_type) {
case PORT_UNKNOWN:
dev_info(&ofdev->dev, "Unknown serial port found, "
"attempting to use 8250 driver\n");
/* fallthrough */
case PORT_8250 ... PORT_MAX_8250:
ret = serial8250_register_port(&port);
break;
default:
/* need to add code for these */
case PORT_UNKNOWN:
dev_info(&ofdev->dev, "Unknown serial port found, ignored\n");
ret = -ENODEV;
break;
}