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path: root/drivers/usb/serial/mos7840.c
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Diffstat (limited to 'drivers/usb/serial/mos7840.c')
-rw-r--r--drivers/usb/serial/mos7840.c43
1 files changed, 26 insertions, 17 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 2c20e88a91b3..84fb1dcd30dc 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -38,7 +38,7 @@
/*
* Version Information
*/
-#define DRIVER_VERSION "1.3.1"
+#define DRIVER_VERSION "1.3.2"
#define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver"
/*
@@ -123,6 +123,11 @@
#define BANDB_DEVICE_ID_USOPTL4_4 0xAC44
#define BANDB_DEVICE_ID_USOPTL4_2 0xAC42
+/* This driver also supports the ATEN UC2324 device since it is mos7840 based
+ * - if I knew the device id it would also support the ATEN UC2322 */
+#define USB_VENDOR_ID_ATENINTL 0x0557
+#define ATENINTL_DEVICE_ID_UC2324 0x2011
+
/* Interrupt Routine Defines */
#define SERIAL_IIR_RLS 0x06
@@ -170,6 +175,7 @@ static struct usb_device_id moschip_port_id_table[] = {
{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
+ {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
{} /* terminating entry */
};
@@ -178,6 +184,7 @@ static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
+ {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
{} /* terminating entry */
};
@@ -1000,12 +1007,6 @@ static int mos7840_open(struct tty_struct *tty,
status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset,
Data);
- /* force low_latency on so that our tty_push actually forces *
- * the data through,otherwise it is scheduled, and with *
- * high data rates (like with OHCI) data can get lost. */
- if (tty)
- tty->low_latency = 1;
-
/* Check to see if we've set up our endpoint info yet *
* (can't set it up in mos7840_startup as the structures *
* were not set up at that time.) */
@@ -2477,9 +2478,14 @@ static int mos7840_startup(struct usb_serial *serial)
mos7840_set_port_private(serial->port[i], mos7840_port);
spin_lock_init(&mos7840_port->pool_lock);
- mos7840_port->port_num = ((serial->port[i]->number -
- (serial->port[i]->serial->minor)) +
- 1);
+ /* minor is not initialised until later by
+ * usb-serial.c:get_free_serial() and cannot therefore be used
+ * to index device instances */
+ mos7840_port->port_num = i + 1;
+ dbg ("serial->port[i]->number = %d", serial->port[i]->number);
+ dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor);
+ dbg ("mos7840_port->port_num = %d", mos7840_port->port_num);
+ dbg ("serial->minor = %d", serial->minor);
if (mos7840_port->port_num == 1) {
mos7840_port->SpRegOffset = 0x0;
@@ -2690,13 +2696,16 @@ static void mos7840_shutdown(struct usb_serial *serial)
for (i = 0; i < serial->num_ports; ++i) {
mos7840_port = mos7840_get_port_private(serial->port[i]);
- spin_lock_irqsave(&mos7840_port->pool_lock, flags);
- mos7840_port->zombie = 1;
- spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
- usb_kill_urb(mos7840_port->control_urb);
- kfree(mos7840_port->ctrl_buf);
- kfree(mos7840_port->dr);
- kfree(mos7840_port);
+ dbg ("mos7840_port %d = %p", i, mos7840_port);
+ if (mos7840_port) {
+ spin_lock_irqsave(&mos7840_port->pool_lock, flags);
+ mos7840_port->zombie = 1;
+ spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
+ usb_kill_urb(mos7840_port->control_urb);
+ kfree(mos7840_port->ctrl_buf);
+ kfree(mos7840_port->dr);
+ kfree(mos7840_port);
+ }
mos7840_set_port_private(serial->port[i], NULL);
}