From 1558f9b44e1c6b5eba46f58214851fd24285641f Mon Sep 17 00:00:00 2001 From: Ishizaki Kou Date: Thu, 31 May 2007 19:30:33 +1000 Subject: [PATCH] [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 Acked-by: Arnd Bergmann Signed-off-by: Paul Mackerras --- drivers/serial/of_serial.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/serial/of_serial.c b/drivers/serial/of_serial.c index 7ffdaeaf0545..d7752af1c7ec 100644 --- a/drivers/serial/of_serial.c +++ b/drivers/serial/of_serial.c @@ -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; } -- GitLab