linux-kernel - [PATCH v2] spi: spi-at91-usart: Fix wrong goto jump label when spi_alloc

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Message-Id: <1623206895-8282-1-git-send-email-zpershuai@gmail.com>
Date:   Wed,  9 Jun 2021 10:48:14 +0800
From:   zpershuai <zpershuai@...il.com>
To:     Radu Pirea <radu_nicolae.pirea@....ro>,
        Mark Brown <broonie@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     zpershuai <zpershuai@...il.com>
Subject: [PATCH v2] spi: spi-at91-usart: Fix wrong goto jump label when spi_alloc_master() returns error.

When spi_alloc_master() returns null pointer, it’s no need to use
spi_master_put() to release the memory, although spi_master_put()
function has null pointer checks.

Signed-off-by: zpershuai <zpershuai@...il.com>
---
 drivers/spi/spi-at91-usart.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/spi/spi-at91-usart.c b/drivers/spi/spi-at91-usart.c
index 8c83526..e5c2d2c 100644
--- a/drivers/spi/spi-at91-usart.c
+++ b/drivers/spi/spi-at91-usart.c
@@ -531,10 +531,9 @@ static int at91_usart_spi_probe(struct platform_device *pdev)
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
-	ret = -ENOMEM;
 	controller = spi_alloc_master(&pdev->dev, sizeof(*aus));
 	if (!controller)
-		goto at91_usart_spi_probe_fail;
+		return -ENOMEM;
 
 	ret = at91_usart_gpio_setup(pdev);
 	if (ret)
-- 
2.7.4