linux-kernel - [PATCH v1] serial: 8250_lpss: copy dma_param using devm

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Date: Tue,  2 Jan 2024 11:20:06 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: ilpo.jarvinen@...ux.intel.com,
	mika.westerberg@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com,
	gregkh@...uxfoundation.org,
	jirislaby@...nel.org
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v1] serial: 8250_lpss: copy dma_param using devm_kmemdup()

Use devm_kmemdup() helper to copy dma_param instead of doing it manually.

Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---
 drivers/tty/serial/8250/8250_lpss.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index 0e43bdfb7459..776ec1ef29d6 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -287,17 +287,14 @@ static int lpss8250_dma_setup(struct lpss8250 *lpss, struct uart_8250_port *port
 		return 0;
 	}
 
-	rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL);
+	rx_param = devm_kmemdup(dev, &lpss->dma_param, sizeof(*rx_param), GFP_KERNEL);
 	if (!rx_param)
 		return -ENOMEM;
 
-	tx_param = devm_kzalloc(dev, sizeof(*tx_param), GFP_KERNEL);
+	tx_param = devm_kmemdup(dev, &lpss->dma_param, sizeof(*tx_param), GFP_KERNEL);
 	if (!tx_param)
 		return -ENOMEM;
 
-	*rx_param = lpss->dma_param;
-	*tx_param = lpss->dma_param;
-
 	dma->fn = lpss8250_dma_filter;
 	dma->rx_param = rx_param;
 	dma->tx_param = tx_param;
-- 
2.35.3