linux-kernel - [PATCH v1 1/2] serial: 8250_dw: Re-use temporary variable for of

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Message-Id: <20211005134529.23256-1-andriy.shevchenko@linux.intel.com>
Date:   Tue,  5 Oct 2021 16:45:28 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Subject: [PATCH v1 1/2] serial: 8250_dw: Re-use temporary variable for of_node

In couple of places we may re-use temporary variable instead of
dereferencing it. No functional changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/tty/serial/8250/8250_dw.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index cf87022e73e4..792389acf9f6 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -389,8 +389,9 @@ static bool dw8250_idma_filter(struct dma_chan *chan, void *param)
 
 static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
 {
-	if (p->dev->of_node) {
-		struct device_node *np = p->dev->of_node;
+	struct device_node *np = p->dev->of_node;
+
+	if (np) {
 		int id;
 
 		/* get index of serial line, if found in DT aliases */
@@ -407,11 +408,13 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
 			data->skip_autocfg = true;
 		}
 #endif
-		if (of_device_is_big_endian(p->dev->of_node)) {
+
+		if (of_device_is_big_endian(np)) {
 			p->iotype = UPIO_MEM32BE;
 			p->serial_in = dw8250_serial_in32be;
 			p->serial_out = dw8250_serial_out32be;
 		}
+
 		if (of_device_is_compatible(np, "marvell,armada-38x-uart"))
 			p->serial_out = dw8250_serial_out38x;
 
-- 
2.33.0