1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
diff -Naru linux-4.9.87.orig/drivers/usb/class/cdc-acm.c linux-4.9.87/drivers/usb/class/cdc-acm.c
--- linux-4.9.87.orig/drivers/usb/class/cdc-acm.c 2019-01-21 09:33:23.938147201 -0600
+++ linux-4.9.87/drivers/usb/class/cdc-acm.c 2019-01-21 09:40:50.374133985 -0600
@@ -1161,8 +1161,10 @@
/* normal quirks */
quirks = (unsigned long)id->driver_info;
- if (quirks == IGNORE_DEVICE)
+ if (quirks == IGNORE_DEVICE) {
+ dev_dbg(&intf->dev, "Ignoring device\n");
return -ENODEV;
+ }
memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header));
@@ -1877,6 +1879,20 @@
.driver_info = IGNORE_DEVICE,
},
+ /* Ignore Exar XR21V141X usb serial chips
+ * This elminates conflicting with the Exar vizzini driver.
+ * The ACM driver cannot use features in the Exar chip,
+ * such as setting the baud rate. */
+ {USB_DEVICE(0x04e2, 0x1410),
+ .driver_info = IGNORE_DEVICE,
+ },
+ {USB_DEVICE(0x04e2, 0x1412),
+ .driver_info = IGNORE_DEVICE,
+ },
+ {USB_DEVICE(0x04e2, 0x1414),
+ .driver_info = IGNORE_DEVICE,
+ },
+
/* control interfaces without any protocol set */
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTO_NONE) },
|
