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USB: pl2303: add quirk for legacy devices 

Add quirk for legacy devices (type 0 and 1) rather than testing on
device type throughout the driver.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-12-29 19:23:08 +01:00 committed by Greg Kroah-Hartman
parent 7f966ac7a9
commit 23c6acb968
1 changed files with 6 additions and 3 deletions
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9
drivers/usb/serial/pl2303.c
View File

@ -33,6 +33,7 @@
#define PL2303_QUIRK_UART_STATE_IDX0 BIT(0)
#define PL2303_QUIRK_LEGACY BIT(1)
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) },
@ -224,6 +225,8 @@ static int pl2303_startup(struct usb_serial *serial)
spriv->type = type;
spriv->quirks = (unsigned long)usb_get_serial_data(serial);
if (type == TYPE_01)
spriv->quirks |= PL2303_QUIRK_LEGACY;
usb_set_serial_data(serial, spriv);
@ -237,7 +240,7 @@ static int pl2303_startup(struct usb_serial *serial)
pl2303_vendor_read(serial, 0x8383, buf);
pl2303_vendor_write(serial, 0, 1);
pl2303_vendor_write(serial, 1, 0);
if (type == TYPE_01)
if (spriv->quirks & PL2303_QUIRK_LEGACY)
pl2303_vendor_write(serial, 2, 0x24);
else
pl2303_vendor_write(serial, 2, 0x44);
@ -531,7 +534,7 @@ static void pl2303_set_termios(struct tty_struct *tty,
}
if (C_CRTSCTS(tty)) {
if (spriv->type == TYPE_01)
if (spriv->quirks & PL2303_QUIRK_LEGACY)
pl2303_vendor_write(serial, 0x0, 0x41);
else
pl2303_vendor_write(serial, 0x0, 0x61);
@ -571,7 +574,7 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
int result;
if (spriv->type == TYPE_01) {
if (spriv->quirks & PL2303_QUIRK_LEGACY) {
usb_clear_halt(serial->dev, port->write_urb->pipe);
usb_clear_halt(serial->dev, port->read_urb->pipe);
} else {