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authorPavel Löbl <pavel@loebl.cz>2019-11-01 08:01:50 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-01 09:17:42 +0100
commit84743898d60bd9ac8a3ad0cac53aa01d508175bb (patch)
tree8990fbf836547ca43708e919f6f5ece5741e33bb
parent356440a79b6b2faf796a65b9915b0882e9f1f73b (diff)
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USB: serial: mos7840: add USB ID to support Moxa UPort 2210
commit e696d00e65e81d46e911f24b12e441037bf11b38 upstream. Add USB ID for MOXA UPort 2210. This device contains mos7820 but it passes GPIO0 check implemented by driver and it's detected as mos7840. Hence product id check is added to force mos7820 mode. Signed-off-by: Pavel Löbl <pavel@loebl.cz> Cc: stable <stable@vger.kernel.org> [ johan: rename id defines and add vendor-id check ] Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/serial/mos7840.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index b42bad85097a..c1c0f6023d96 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -118,11 +118,15 @@
/* This driver also supports
* ATEN UC2324 device using Moschip MCS7840
* ATEN UC2322 device using Moschip MCS7820
+ * MOXA UPort 2210 device using Moschip MCS7820
*/
#define USB_VENDOR_ID_ATENINTL 0x0557
#define ATENINTL_DEVICE_ID_UC2324 0x2011
#define ATENINTL_DEVICE_ID_UC2322 0x7820
+#define USB_VENDOR_ID_MOXA 0x110a
+#define MOXA_DEVICE_ID_2210 0x2210
+
/* Interrupt Routine Defines */
#define SERIAL_IIR_RLS 0x06
@@ -193,6 +197,7 @@ static const struct usb_device_id id_table[] = {
{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)},
{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)},
+ {USB_DEVICE(USB_VENDOR_ID_MOXA, MOXA_DEVICE_ID_2210)},
{} /* terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
@@ -2053,6 +2058,7 @@ static int mos7840_probe(struct usb_serial *serial,
const struct usb_device_id *id)
{
u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
+ u16 vid = le16_to_cpu(serial->dev->descriptor.idVendor);
u8 *buf;
int device_type;
@@ -2062,6 +2068,11 @@ static int mos7840_probe(struct usb_serial *serial,
goto out;
}
+ if (vid == USB_VENDOR_ID_MOXA && product == MOXA_DEVICE_ID_2210) {
+ device_type = MOSCHIP_DEVICE_ID_7820;
+ goto out;
+ }
+
buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL);
if (!buf)
return -ENOMEM;