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USB: cdc-acm - blacklist IMS PCU device

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The IMS PCU (Passenger Control Unit) device used custom protocol over serial
line, so it is presenting itself as CDC ACM device.

Now that we have proper in-kernel driver for it we need to black-list the
device in cdc-acm driver.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2013-02-02 11:02:14 -08:00
parent 628329d524
commit 1614265526
2 changed files with 14 additions and 0 deletions
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13
drivers/usb/class/cdc-acm.c
View File

@ -949,6 +949,10 @@ static int acm_probe(struct usb_interface *intf,
/* normal quirks */
quirks = (unsigned long)id->driver_info;
if (quirks == IGNORE_DEVICE)
return -ENODEV;
num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
/* handle quirks deadly to normal probing*/
@ -1650,6 +1654,15 @@ static const struct usb_device_id acm_ids[] = {
.driver_info = NO_DATA_INTERFACE,
},
#if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
{ USB_DEVICE(0x04d8, 0x0082), /* Application mode */
.driver_info = IGNORE_DEVICE,
},
{ USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */
.driver_info = IGNORE_DEVICE,
},
#endif
/* control interfaces without any protocol set */
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTO_NONE) },

1
drivers/usb/class/cdc-acm.h
View File

@ -128,3 +128,4 @@ struct acm {
#define NO_CAP_LINE 4
#define NOT_A_MODEM 8
#define NO_DATA_INTERFACE 16
#define IGNORE_DEVICE 32