USB: serial: cp210x: refactor flow-control handling

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Add a helper function to be used to configure flow control.

The flow-control code was the last caller that relied on the
memset-on-failure behaviour of cp210x_read_reg_block(), which we can now
drop in favour of bailing out on errors when retrieving the flow-control
settings.

This should also simplify adding support for software flow control.

Signed-off-by: Johan Hovold <johan@kernel.org>

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Johan Hovold 2020-11-16 17:18:25 +01:00

parent b339628ec0

commit ed921771ff

1 changed files with 47 additions and 50 deletions

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drivers/usb/serial/cp210x.c

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