Re: [PATCH] USB: serial: option: the patch is meant to support LARA-R6 Cat 1 and LARA-L6 CAT 4 module family.

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On 9/30/2022 22:23, Davide Tronchin wrote:
The LARA-R6 module has the following USB identifiers:
Vendor  ID: 0x05c6
Product ID: 0x908b

The USB composition exposes the following interfaces:
If 0: Diagnostic
If 1: AT parser
If 2: AT parser
If 3: AT parser/alternative functions

The USB Id 05c6:908b belongs to Qualcomm and is not reserved for Ublox - it is used by other companies, Simtech is one of them. The generic Windows driver from Qualcomm and the same driver from Simtech defines the interfaces as:

MI_00 Qualcomm HS-USB MSM Diagnostics 908B
MI_01 Qualcomm HS-USB NMEA 908B
MI_02 Qualcomm HS-USB Modem 908B-2
MI_03 Qualcomm HS-USB Modem 908B-3
MI_04 Qualcomm HS-USB WWAN Adapter 908B

MI_00 Simtech Wireless HS-USB MSM Diagnostics 908B
MI_01 Simtech Wireless HS-USB NMEA 908B
MI_02 Simtech Wireless HS-USB Modem 908B-2
MI_03 Simtech Wireless HS-USB Modem 908B-3
MI_04 Simtech Wireless HS-USB WWAN Adapter 908B

The net interface in both cases is a QMI interface
which has to be blacklisted in the option driver.
Please provide a v2 of your patch reflecting this.

thanks
Lars






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