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Date: Mon, 26 Dec 2022 08:23:34 +0700 From: Lars Melin <larsm17@...il.com> To: Matthew Garrett <mjg59@...f.ucam.org>, johan@...nel.org, bjorn@...k.no Cc: netdev@...r.kernel.org, linux-usb@...r.kernel.org, Matthew Garrett <mgarrett@...ora.tech> Subject: Re: [PATCH 1/3] USB: serial: option: Add generic MDM9207 configurations On 12/26/2022 03:52, Matthew Garrett wrote: > + /* Qualcomm MDM9207 - 0: DIAG, 2: AT, 3: NMEA */ > + { USB_DEVICE(QUALCOMM_VENDOR_ID, 0xf601), > + .driver_info = RSVD(1) | RSVD(4) | RSVD(5) }, > + /* Qualcomm MDM9207 - 2: DIAG, 4: AT, 5: NMEA */ > + { USB_DEVICE(QUALCOMM_VENDOR_ID, 0xf622), > + .driver_info = RSVD(0) | RSVD(1) | RSVD(3) | RSVD(6) }, Please tell what the reserved interfaces are used for and why they should be blacklisted. The generic Qualcomm driver for 05c6:f601 (which is used by at least one other brand/reseller) specifies that interface#1 is for USB Modem (ppp dial-up). I assume that you posses this dongle since you add support for it so you can easily verify that function which I assume has not been disabled in your version. thanks Lars
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