Commit a77a8c23 authored by Frank Schäfer's avatar Frank Schäfer Committed by Greg Kroah-Hartman
Browse files

pl2303: improve the chip type information output on startup

The chip type distinction is getting more and more relevant and
complicating, so always print the chip type.
Printing a name string is also much better than just printing an
internal index number.
Signed-off-by: default avatarFrank Schäfer <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 73b583af
......@@ -177,6 +177,7 @@ static int pl2303_startup(struct usb_serial *serial)
struct pl2303_serial_private *spriv;
enum pl2303_type type = type_0;
char *type_str = "unknown (treating as type_0)";
unsigned char *buf;
spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
......@@ -189,14 +190,18 @@ static int pl2303_startup(struct usb_serial *serial)
return -ENOMEM;
if (serial->dev->descriptor.bDeviceClass == 0x02)
if (serial->dev->descriptor.bDeviceClass == 0x02) {
type = type_0;
else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
type_str = "type_0";
} else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) {
type = HX;
else if (serial->dev->descriptor.bDeviceClass == 0x00
|| serial->dev->descriptor.bDeviceClass == 0xFF)
type_str = "X/HX";
} else if (serial->dev->descriptor.bDeviceClass == 0x00
|| serial->dev->descriptor.bDeviceClass == 0xFF) {
type = type_1;
dev_dbg(&serial->interface->dev, "device type: %d\n", type);
type_str = "type_1";
dev_dbg(&serial->interface->dev, "device type: %s\n", type_str);
spriv->type = type;
usb_set_serial_data(serial, spriv);
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