USB: ftdi_sio: use error code from usb stack in read_latency_timer

[pandora-kernel.git] / drivers / usb / serial / ftdi_sio.c

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 7638828..ec901ed 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1184,7 +1184,6 @@ static int read_latency_timer(struct usb_serial_port *port)
        unsigned short latency = 0;
        int rv = 0;
 
-
        dbg("%s", __func__);
 
        rv = usb_control_msg(udev,
@@ -1194,11 +1193,11 @@ static int read_latency_timer(struct usb_serial_port *port)
                             0, priv->interface,
                             (char *) &latency, 1, WDR_TIMEOUT);
 
-       if (rv < 0) {
+       if (rv < 0)
                dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
-               return -EIO;
-       }
-       return latency;
+       else
+               priv->latency = latency;
+       return rv;
 }
 
 static int get_serial_info(struct usb_serial_port *port,
@@ -1552,8 +1551,7 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
        kref_init(&priv->kref);
        spin_lock_init(&priv->tx_lock);
        init_waitqueue_head(&priv->delta_msr_wait);
-       /* This will push the characters through immediately rather
-          than queue a task to deliver them */
+
        priv->flags = ASYNC_LOW_LATENCY;
 
        if (quirk && quirk->port_probe)
@@ -1585,7 +1583,8 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
 
        ftdi_determine_type(port);
        ftdi_set_max_packet_size(port);
-       read_latency_timer(port);
+       if (read_latency_timer(port) < 0)
+               priv->latency = 16;
        create_sysfs_attrs(port);
        return 0;
 }
@@ -1720,7 +1719,7 @@ static int ftdi_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags)
                           urb->transfer_buffer_length,
                           ftdi_read_bulk_callback, port);
        result = usb_submit_urb(urb, mem_flags);
-       if (result)
+       if (result && result != -EPERM)
                dev_err(&port->dev,
                        "%s - failed submitting read urb, error %d\n",
                                                        __func__, result);
@@ -2246,12 +2245,10 @@ static void ftdi_set_termios(struct tty_struct *tty,
        }
        if (cflag & CSIZE) {
                switch (cflag & CSIZE) {
-               case CS5: urb_value |= 5; dbg("Setting CS5"); break;
-               case CS6: urb_value |= 6; dbg("Setting CS6"); break;
                case CS7: urb_value |= 7; dbg("Setting CS7"); break;
                case CS8: urb_value |= 8; dbg("Setting CS8"); break;
                default:
-                       dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
+                       dev_err(&port->dev, "CSIZE was set but not CS7-CS8\n");
                }
        }