serial: pl011: Drop duplicate loop counter

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pl011_fifo_to_tty() has two counters (max_count and fifotaken) for the
same loop.  One counter should suffice.  This saves one subtraction per
character read from the RX FIFO.

Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Cc: Phil Elwell <phil@raspberrypi.org>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Lukas Wunner 2017-11-25 00:40:49 +01:00 • committed by Greg Kroah-Hartman

parent f859722a8f

commit e73be92d82

1 changed files with 2 additions and 4 deletions

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6

drivers/tty/serial/amba-pl011.c

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