netdev - [PATCH v2] p54: Fix an error handling path in p54spi

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Message-Id: <297d2547ff2ee627731662abceeab9dbdaf23231.1655068321.git.christophe.jaillet@wanadoo.fr>
Date:   Sun, 12 Jun 2022 23:12:20 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Christian Lamparter <chunkeey@...glemail.com>,
        Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "John W. Linville" <linville@...driver.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Christian Lamparter <chunkeey@....de>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH v2] p54: Fix an error handling path in p54spi_probe()

If an error occurs after a successful call to p54spi_request_firmware(), it
must be undone by a corresponding release_firmware() as already done in
the error handling path of p54spi_request_firmware() and in the .remove()
function.

Add the missing call in the error handling path and remove it from
p54spi_request_firmware() now that it is the responsibility of the caller
to release the firmawre

Fixes: cd8d3d321285 ("p54spi: p54spi driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
v2: reduce diffstat and take advantage on the fact that release_firmware()
checks for NULL
---
 drivers/net/wireless/intersil/p54/p54spi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intersil/p54/p54spi.c b/drivers/net/wireless/intersil/p54/p54spi.c
index f99b7ba69fc3..19152fd449ba 100644
--- a/drivers/net/wireless/intersil/p54/p54spi.c
+++ b/drivers/net/wireless/intersil/p54/p54spi.c
@@ -164,7 +164,7 @@ static int p54spi_request_firmware(struct ieee80211_hw *dev)
 
 	ret = p54_parse_firmware(dev, priv->firmware);
 	if (ret) {
-		release_firmware(priv->firmware);
+		/* the firmware is released by the caller */
 		return ret;
 	}
 
@@ -659,6 +659,7 @@ static int p54spi_probe(struct spi_device *spi)
 	return 0;
 
 err_free_common:
+	release_firmware(priv->firmware);
 	free_irq(gpio_to_irq(p54spi_gpio_irq), spi);
 err_free_gpio_irq:
 	gpio_free(p54spi_gpio_irq);
-- 
2.34.1