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: Frank Schäfer <fschaefer.oss@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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drivers/usb/serial
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@ -177,6 +177,7 @@ static int pl2303_startup(struct usb_serial *serial)
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{
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struct pl2303_serial_private *spriv;
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enum pl2303_type type = type_0;
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char *type_str = "unknown (treating as type_0)";
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unsigned char *buf;
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spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
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@ -189,14 +190,18 @@ static int pl2303_startup(struct usb_serial *serial)
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return -ENOMEM;
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}
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if (serial->dev->descriptor.bDeviceClass == 0x02)
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if (serial->dev->descriptor.bDeviceClass == 0x02) {
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type = type_0;
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else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
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type_str = "type_0";
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} else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) {
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type = HX;
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else if (serial->dev->descriptor.bDeviceClass == 0x00
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|| serial->dev->descriptor.bDeviceClass == 0xFF)
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type_str = "X/HX";
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} else if (serial->dev->descriptor.bDeviceClass == 0x00
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|| serial->dev->descriptor.bDeviceClass == 0xFF) {
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type = type_1;
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dev_dbg(&serial->interface->dev, "device type: %d\n", type);
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type_str = "type_1";
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}
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dev_dbg(&serial->interface->dev, "device type: %s\n", type_str);
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spriv->type = type;
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usb_set_serial_data(serial, spriv);
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