serial: imx: get rid of registers shadowing

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Neither registers shadowing is functionally needed as all the registers are
read-write, nor the shadowing makes much sense for speed-up, as most speed
critical reads/writes (of data Rx/Tx registers) are not shadowed anyway.
Moreover, the shadowing code is obviously pure overhead on the write path.

Get rid of the shadowing code and variables due to above considerations.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Link: https://lore.kernel.org/r/20230201141603.4205-1-sorganov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Sergey Organov 2023-02-01 17:16:03 +03:00 • committed by Greg Kroah-Hartman

parent 2af4b91884

commit f2d9fbb6f4

1 changed files with 4 additions and 63 deletions

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drivers/tty/serial/imx.c

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