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USB: serial: cp210x: determine fw version for CP2105 and CP2108
authorJohan Hovold <johan@kernel.org>
Mon, 5 Jul 2021 08:20:15 +0000 (10:20 +0200)
committerJohan Hovold <johan@kernel.org>
Fri, 30 Jul 2021 15:19:51 +0000 (17:19 +0200)
commit4e9340bb551a5ad664196465ba7620009d835dbc
tree312edf5d5329addbe01a2d1bbb78bae1835f5c4etree | snapshot
parent33fb934a0992440e3d645d3965e71217c185fd6dcommit | diff
USB: serial: cp210x: determine fw version for CP2105 and CP2108

CP2105, CP2108 and CP2102N have vendor requests that can be used to
retrieve the firmware version. Having this information available is
essential when trying to work around buggy firmware as a recent CP2102N
regression showed.

Determine and log the firmware version also for CP2105 and CP2108
during type detection at probe.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
drivers/usb/serial/cp210x.c diff | blob | history
Domain: System / Kernel;