https://bugzilla.kernel.org/show_bug.cgi?id=86931
Kai Krakow (hurikhan77+bko@gmail.com) changed:
What |Removed |Added
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CC| |hurikhan77+bko@gmail.com
--- Comment #10 from Kai Krakow (hurikhan77+bko@gmail.com) ---
"unknown main tag item 0x0" comes from the HID layer, it has nothing to do with
Bluetooth or connection stability. It's usually a stray NUL character at the
end of the HID descriptor which the kernel safely ignores but still logs. In my
own driver development (xpadneo), I just shorten the HID descriptor by one byte
if it ends with NUL because the devices I work with are known to NUL-terminate
their HID descriptors.
Maybe the kernel should do the same: If the last HID descriptor byte is a
NUL-byte, it should simply shorten the HID descriptor by one byte, essentially
cutting the offending byte off, and the message would be gone. Other than a log
message, it has no consequences in the kernel, it comes from a completely
different layer that's not related to Bluetooth at all.
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