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Wed, 30 Jul 2025 15:33:18 -0700 (PDT) From: Kevin Hilman To: Johan Hovold , Greg Kroah-Hartman , Thinh Nguyen , Bin Liu Cc: Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Neil Armstrong , Jerome Brunet , Martin Blumenstingl , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org, Roger Quadros Subject: Re: [PATCH 4/5] usb: musb: omap2430: fix device leak at unbind In-Reply-To: <20250724091910.21092-5-johan@kernel.org> References: <20250724091910.21092-1-johan@kernel.org> <20250724091910.21092-5-johan@kernel.org> Date: Wed, 30 Jul 2025 15:33:18 -0700 Message-ID: <7hqzxxb975.fsf@baylibre.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Johan Hovold writes: > Make sure to drop the reference to the control device taken by > of_find_device_by_node() during probe when the driver is unbound. > > Fixes: 8934d3e4d0e7 ("usb: musb: omap2430: Don't use omap_get_control_dev()") > Cc: stable@vger.kernel.org # 3.13 > Cc: Roger Quadros > Signed-off-by: Johan Hovold Reviewed-by: Kevin Hilman > --- > drivers/usb/musb/omap2430.c | 14 +++++++++----- > 1 file changed, 9 insertions(+), 5 deletions(-) > > diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c > index 2970967a4fd2..36f756f9b7f6 100644 > --- a/drivers/usb/musb/omap2430.c > +++ b/drivers/usb/musb/omap2430.c > @@ -400,7 +400,7 @@ static int omap2430_probe(struct platform_device *pdev) > ret = platform_device_add_resources(musb, pdev->resource, pdev->num_resources); > if (ret) { > dev_err(&pdev->dev, "failed to add resources\n"); > - goto err2; > + goto err_put_control_otghs; > } > > if (populate_irqs) { > @@ -413,7 +413,7 @@ static int omap2430_probe(struct platform_device *pdev) > res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > if (!res) { > ret = -EINVAL; > - goto err2; > + goto err_put_control_otghs; > } > > musb_res[i].start = res->start; > @@ -441,14 +441,14 @@ static int omap2430_probe(struct platform_device *pdev) > ret = platform_device_add_resources(musb, musb_res, i); > if (ret) { > dev_err(&pdev->dev, "failed to add IRQ resources\n"); > - goto err2; > + goto err_put_control_otghs; > } > } > > ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); > if (ret) { > dev_err(&pdev->dev, "failed to add platform_data\n"); > - goto err2; > + goto err_put_control_otghs; > } > > pm_runtime_enable(glue->dev); > @@ -463,7 +463,9 @@ static int omap2430_probe(struct platform_device *pdev) > > err3: > pm_runtime_disable(glue->dev); > - > +err_put_control_otghs: > + if (!IS_ERR(glue->control_otghs)) > + put_device(glue->control_otghs); > err2: > platform_device_put(musb); > > @@ -477,6 +479,8 @@ static void omap2430_remove(struct platform_device *pdev) > > platform_device_unregister(glue->musb); > pm_runtime_disable(glue->dev); > + if (!IS_ERR(glue->control_otghs)) > + put_device(glue->control_otghs); > } > > #ifdef CONFIG_PM > -- > 2.49.1