From: Jiri Slaby jslaby@suse.cz
[ Upstream commit 3af44d9bb0539d5fa27d6159d696fda5f3747bff ]
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@distanz.ch Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Acked-by: Tobias Klauser tklauser@distanz.ch Signed-off-by: Jiri Slaby jslaby@suse.cz Link: https://lore.kernel.org/r/20220920052049.20507-4-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: 1307c5d33cce ("serial: altera_uart: fix locking in polling mode") Signed-off-by: Sasha Levin sashal@kernel.org --- 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 71478d098c13..ab08c4050a84 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);