Commit b52e1113 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Revert "pl2303: improve the chip type information output on startup"

This reverts commit a77a8c23


Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip.  This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: default avatarMika Westerberg <>
Cc: Frank Schäfer <>
Acked-by: default avatarJohan Hovold <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent e8bbd5c4
......@@ -177,7 +177,6 @@ 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);
......@@ -190,18 +189,14 @@ 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;
type_str = "type_0";
} else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) {
else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
type = HX;
type_str = "X/HX";
} else if (serial->dev->descriptor.bDeviceClass == 0x00
|| serial->dev->descriptor.bDeviceClass == 0xFF) {
else if (serial->dev->descriptor.bDeviceClass == 0x00
|| serial->dev->descriptor.bDeviceClass == 0xFF)
type = type_1;
type_str = "type_1";
dev_dbg(&serial->interface->dev, "device type: %s\n", type_str);
dev_dbg(&serial->interface->dev, "device type: %d\n", type);
spriv->type = type;
usb_set_serial_data(serial, spriv);
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment