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USB: cdc-acm: add more Maxlinear/Exar models to ignore list

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Now that the xr_serial got support for other models, add their USB IDs
as well.

The Maxlinear/Exar USB UARTs can be used in either ACM mode using the
cdc-acm driver or in "custom driver" mode in which further features such
as hardware and software flow control, GPIO control and in-band
line-status reporting are available.

In ACM mode the device always enables RTS/CTS flow control, something
which could prevent transmission in case the CTS input isn't wired up
correctly.

Ensure that cdc_acm will not bind to these devices if the custom
USB-serial driver is enabled.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5155887a764cbc11f8da0217fe08a24a77d120b4.1616571453.git.mchehab+huawei@kernel.org
[ johan: rewrite commit message, clean up entries ]
Cc: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2021-04-12 11:55:57 +02:00 committed by Johan Hovold
parent d801c8d438
commit 039b81d50a
1 changed files with 11 additions and 3 deletions
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14
drivers/usb/class/cdc-acm.c
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@ -1902,9 +1902,17 @@ static const struct usb_device_id acm_ids[] = {
#endif
#if IS_ENABLED(CONFIG_USB_SERIAL_XR)
{ USB_DEVICE(0x04e2, 0x1410), /* Ignore XR21V141X USB to Serial converter */
.driver_info = IGNORE_DEVICE,
},
{ USB_DEVICE(0x04e2, 0x1400), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1401), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1402), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1403), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1410), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1411), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1412), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1414), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1420), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1422), .driver_info = IGNORE_DEVICE },
{ USB_DEVICE(0x04e2, 0x1424), .driver_info = IGNORE_DEVICE },
#endif
/*Samsung phone in firmware update mode */