Commit a774aa45 authored by Gabriel Somlo's avatar Gabriel Somlo Committed by Greg Kroah-Hartman
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serial: liteuart: clean up rx loop variables 



The `status` variable will always be `1` when passed into the call
to `uart_insert_char()`, so it can be eliminated altogether.

Use `u8` as the type for `ch`, as it matches the return type of
the `litex_read8()` call which produces its value.

Signed-off-by: default avatarGabriel Somlo <gsomlo@gmail.com>
Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: default avatarJiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221123130500.1030189-10-gsomlo@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ca538cc7

drivers/tty/serial/liteuart.c

+3 −4
Original line number Diff line number Diff line
@@ -73,10 +73,9 @@ static void liteuart_timer(struct timer_list *t) 
	struct liteuart_port *uart = from_timer(uart, t, timer);

	struct uart_port *port = &uart->port;

	unsigned char __iomem *membase = port->membase;

	int ch;

	unsigned long status;

	u8 ch;



	while ((status = !litex_read8(membase + OFF_RXEMPTY)) == 1) {

	while (!litex_read8(membase + OFF_RXEMPTY)) {

		ch = litex_read8(membase + OFF_RXTX);

		port->icount.rx++;
@@ -85,7 +84,7 @@ static void liteuart_timer(struct timer_list *t) 


		/* no overflow bits in status */

		if (!(uart_handle_sysrq_char(port, ch)))

			uart_insert_char(port, status, 0, ch, TTY_NORMAL);

			uart_insert_char(port, 1, 0, ch, TTY_NORMAL);

	}



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