This patch fixes a problem with any mos7840 device where the use of the field "minor" before it is
initialised results in all the devices being overlaid in memory (minor = 0 for all instances),
additionally it adds USB ids for the mos7840 based ATEN International serial devices.
Contributed by: Phillip Branch
Signed-off-by: Tony Cook tony-cook@xxxxxxxxxxx
-----------------------------------------------------
diff -Naur linux-2.6.29/drivers/usb/serial/mos7840.c linux-2.6.29-patch1/drivers/usb/serial/mos7840.c
--- linux-2.6.29/drivers/usb/serial/mos7840.c 2009-03-28 14:08:46.000000000 +1030
+++ linux-2.6.29-patch1/drivers/usb/serial/mos7840.c 2009-03-29 23:25:25.000000000 +1030
@@ -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"
/*
@@ -114,6 +114,7 @@
#define USB_VENDOR_ID_MOSCHIP 0x9710
#define MOSCHIP_DEVICE_ID_7840 0x7840
#define MOSCHIP_DEVICE_ID_7820 0x7820
+
/* The native component can have its vendor/device id's overridden
* in vendor-specific implementations. Such devices can be handled
* by making a change here, in moschip_port_id_table, and in
@@ -123,6 +124,11 @@
#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 +176,7 @@
{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 +185,7 @@
{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 */
};
@@ -2477,9 +2485,14 @@
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 +2703,16 @@
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);
}
-----------------------------------------------------
--
Tony Cook
Lewiston 5501
Ph. +61 (0)8 8524 3418
Mob. +61 (0)4 2885 2512
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