Commit 2225ee13 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

serial: rda: drop low-latency workaround 



The rda driver has always carried an unnecessary workaround for the
infamous low_latency behaviour of tty_flip_buffer_push(), which had
been removed years before the driver was added by commit c10b1332
("tty: serial: Add RDA8810PL UART driver").

Specifically, since commit a9c3f68f ("tty: Fix low_latency BUG"),
tty_flip_buffer_push() always schedules a work item to push data to the
line discipline and there's no need to keep any low_latency hacks around.

Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210421095509.3024-19-johan@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 493a275c

drivers/tty/serial/rda-uart.c

+0 −2
Original line number Diff line number Diff line
@@ -398,9 +398,7 @@ static void rda_uart_receive_chars(struct uart_port *port) 
		status = rda_uart_read(port, RDA_UART_STATUS);

	}



	spin_unlock(&port->lock);

	tty_flip_buffer_push(&port->state->port);

	spin_lock(&port->lock);

}



static irqreturn_t rda_interrupt(int irq, void *dev_id)