[PATCH v4 03/10] tty: serial: altera_uart_{r,t}x_chars() need only uart_port

From: Jiri Slaby
Date: Tue Sep 20 2022 - 01:21:27 EST


Both altera_uart_{r,t}x_chars() need only uart_port, not altera_uart. So
pass the former from altera_uart_interrupt() directly.

Apart it maybe saves a dereference, this makes the transition of
altera_uart_tx_chars() easier to follow in the next patch.

Cc: Tobias Klauser <tklauser@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---

Notes:
[v4] this is new in v4 -- extracted as a separate change

drivers/tty/serial/altera_uart.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index 4170e66601ec..82f2790de28d 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -199,9 +199,8 @@ static void altera_uart_set_termios(struct uart_port *port,
*/
}

-static void altera_uart_rx_chars(struct altera_uart *pp)
+static void altera_uart_rx_chars(struct uart_port *port)
{
- struct uart_port *port = &pp->port;
unsigned char ch, flag;
unsigned short status;

@@ -246,9 +245,8 @@ static void altera_uart_rx_chars(struct altera_uart *pp)
tty_flip_buffer_push(&port->state->port);
}

-static void altera_uart_tx_chars(struct altera_uart *pp)
+static void altera_uart_tx_chars(struct uart_port *port)
{
- struct uart_port *port = &pp->port;
struct circ_buf *xmit = &port->state->xmit;

if (port->x_char) {
@@ -286,9 +284,9 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data)

spin_lock(&port->lock);
if (isr & ALTERA_UART_STATUS_RRDY_MSK)
- altera_uart_rx_chars(pp);
+ altera_uart_rx_chars(port);
if (isr & ALTERA_UART_STATUS_TRDY_MSK)
- altera_uart_tx_chars(pp);
+ altera_uart_tx_chars(port);
spin_unlock(&port->lock);

return IRQ_RETVAL(isr);
--
2.37.3