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Wed, 18 Mar 2026 09:12:39 -0700 (PDT) From: Felix Gu Date: Thu, 19 Mar 2026 00:12:34 +0800 Subject: [PATCH 1/2] spi: sn-f-ospi: Fix resource leak in f_ospi_probe() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260319-sn-f-v1-1-33a6738d2da8@gmail.com> References: <20260319-sn-f-v1-0-33a6738d2da8@gmail.com> In-Reply-To: <20260319-sn-f-v1-0-33a6738d2da8@gmail.com> To: Mark Brown , Kunihiko Hayashi Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1773850356; l=1715; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=v9woLIZgnstGAIF0Eth5tsY4n3LQFLhcy4LkO8NqurM=; b=XDxxe+Jl0TxFt2HOYzfrUi5I5sfII+Gc3wJ34vcts7QvZR4npV1kgcPV1wyR8IwJNvqj4wUru imfoKyZ7fO2CmdfVNO12C576YAKFIGOSveH9NbRZhjVSH3Js2nsZIyH X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= In f_ospi_probe(), when num_cs validation fails, it returns without calling spi_controller_put() on the SPI controller, which causes a resource leak. Use devm_spi_alloc_host() instead of spi_alloc_host() to ensure the SPI controller is properly freed when probe fails. Fixes: 1b74dd64c861 ("spi: Add Socionext F_OSPI SPI flash controller driver= ") Signed-off-by: Felix Gu --- drivers/spi/spi-sn-f-ospi.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/drivers/spi/spi-sn-f-ospi.c b/drivers/spi/spi-sn-f-ospi.c index bfcc140df810..1f554aa7ca27 100644 --- a/drivers/spi/spi-sn-f-ospi.c +++ b/drivers/spi/spi-sn-f-ospi.c @@ -612,7 +612,7 @@ static int f_ospi_probe(struct platform_device *pdev) u32 num_cs =3D OSPI_NUM_CS; int ret; =20 - ctlr =3D spi_alloc_host(dev, sizeof(*ospi)); + ctlr =3D devm_spi_alloc_host(dev, sizeof(*ospi)); if (!ctlr) return -ENOMEM; =20 @@ -635,16 +635,12 @@ static int f_ospi_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ospi); =20 ospi->base =3D devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(ospi->base)) { - ret =3D PTR_ERR(ospi->base); - goto err_put_ctlr; - } + if (IS_ERR(ospi->base)) + return PTR_ERR(ospi->base); =20 ospi->clk =3D devm_clk_get_enabled(dev, NULL); - if (IS_ERR(ospi->clk)) { - ret =3D PTR_ERR(ospi->clk); - goto err_put_ctlr; - } + if (IS_ERR(ospi->clk)) + return PTR_ERR(ospi->clk); =20 mutex_init(&ospi->mlock); =20 @@ -661,9 +657,6 @@ static int f_ospi_probe(struct platform_device *pdev) err_destroy_mutex: mutex_destroy(&ospi->mlock); =20 -err_put_ctlr: - spi_controller_put(ctlr); - return ret; } =20 --=20 2.43.0