On 7/23/2018 21:02, Romain Izard wrote:
Some modems now use the Android Debug Bridge to provide a debugging interface, and some phones can also export serial ports managed by the "option" driver. The ADB daemon running in userspace tries to use USB interfaces with bDeviceClass=0xFF, bDeviceSubClass=0x42, bDeviceProtocol=1 Prevent the option driver from binding to those interfaces, as they will not be serial ports.
You are assuming that an interface with these attributes are always a ADB interface - that is wrong. Vendor specific class (0xff) is not standardized to be something specific.
This can fix issues like: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=781256
You are trying to solve a 4++ years old bug report where it was assumed that the option driver was the culprit. The device in question, a Qualcomm modem with vid/pid 05c6:9025 has never been included in option.
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