USB: serial: ftdi_sio: match on interface number for jtag

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commit 4e31a5d0a9 upstream.

Some FTDI devices have the first port reserved for JTAG and have been
using a dedicated quirk to prevent binding to it.

As can be inferred directly or indirectly from the commit messages,
almost all of these devices are dual port devices which means that the
more recently added macro for matching on interface number can be used
instead (and some such devices do so already).

This avoids probing interfaces that will never be bound and cleans up
the match table somewhat.

Note that the JTAG quirk is kept for quad port devices, which would
otherwise require three match entries.

Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2025-11-10 12:12:05 +01:00 • committed by Greg Kroah-Hartman

parent 31dea5e1c2

commit ccf6e31b91

1 changed files with 24 additions and 48 deletions

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drivers/usb/serial/ftdi_sio.c

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