linux-kernel - [PATCH 4/4] tty: serial, join uport checks in uart_port

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Message-Id: <20211118071911.12059-5-jslaby@suse.cz>
Date:   Thu, 18 Nov 2021 08:19:11 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 4/4] tty: serial, join uport checks in uart_port_shutdown()

There are two consequent checks of uport != NULL in
uart_port_shutdown(). Join these two under a single block.

De-multiline the comments when shuffling with them anyway.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/serial/serial_core.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 1e738f265eea..a8750927f03c 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1685,17 +1685,13 @@ static void uart_port_shutdown(struct tty_port *port)
 	 */
 	wake_up_interruptible(&port->delta_msr_wait);
 
-	/*
-	 * Free the IRQ and disable the port.
-	 */
-	if (uport)
+	if (uport) {
+		/* Free the IRQ and disable the port. */
 		uport->ops->shutdown(uport);
 
-	/*
-	 * Ensure that the IRQ handler isn't running on another CPU.
-	 */
-	if (uport)
+		/* Ensure that the IRQ handler isn't running on another CPU. */
 		synchronize_irq(uport->irq);
+	}
 }
 
 static int uart_carrier_raised(struct tty_port *port)
-- 
2.33.1