From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: balbi@kernel.org, gregkh@linuxfoundation.org, krzk@kernel.org, nathan@kernel.org, ndesaulniers@google.com, arnd@arndb.de, gustavoars@kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET <christophe.jaillet@wanadoo.fr> Subject: [PATCH 2/2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()' Date: Sun, 21 Feb 2021 08:41:33 +0100 [thread overview] Message-ID: <20210221074133.938017-1-christophe.jaillet@wanadoo.fr> (raw) Some 'clk_prepare_enable()' and 'clk_get()' must be undone in the error handling path of the probe function, as already done in the remove function. Fixes: 1c6d47aa4f4b ("USB Gadget driver for Samsung s3c2410 ARM SoC") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- checkpatch reports: WARNING: Unknown commit id '1c6d47aa4f4b', maybe rebased or not pulled? According to https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/usb/gadget/s3c2410_udc.c?id=3fc154b6b8134b98bb94d60cad9a46ec1ffbe372 the commit ID looks correct to me. Maybe something should be tweaked somewhere before applying, but I don't know what! --- drivers/usb/gadget/udc/s3c2410_udc.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index 3fc436286bad..146250e93412 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1750,7 +1750,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc_clock = clk_get(NULL, "usb-device"); if (IS_ERR(udc_clock)) { dev_err(dev, "failed to get udc clock source\n"); - return PTR_ERR(udc_clock); + retval = PTR_ERR(udc_clock); + goto err_usb_bus_clk; } clk_prepare_enable(udc_clock); @@ -1773,7 +1774,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) base_addr = devm_platform_ioremap_resource(pdev, 0); if (!base_addr) { retval = -ENOMEM; - goto err; + goto err_udc_clk; } the_controller = udc; @@ -1791,7 +1792,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) if (retval != 0) { dev_err(dev, "cannot get irq %i, err %d\n", irq_usbd, retval); retval = -EBUSY; - goto err; + goto err_udc_clk; } dev_dbg(dev, "got irq %i\n", irq_usbd); @@ -1862,7 +1863,14 @@ static int s3c2410_udc_probe(struct platform_device *pdev) gpio_free(udc_info->vbus_pin); err_int: free_irq(irq_usbd, udc); -err: +err_udc_clk: + clk_disable_unprepare(udc_clock); + clk_put(udc_clock); + udc_clock = NULL; +err_usb_bus_clk: + clk_disable_unprepare(usb_bus_clock); + clk_put(usb_bus_clock); + usb_bus_clock = NULL; return retval; } -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: balbi@kernel.org, gregkh@linuxfoundation.org, krzk@kernel.org, nathan@kernel.org, ndesaulniers@google.com, arnd@arndb.de, gustavoars@kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org, linux-usb@vger.kernel.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Christophe JAILLET <christophe.jaillet@wanadoo.fr> Subject: [PATCH 2/2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()' Date: Sun, 21 Feb 2021 08:41:33 +0100 [thread overview] Message-ID: <20210221074133.938017-1-christophe.jaillet@wanadoo.fr> (raw) Some 'clk_prepare_enable()' and 'clk_get()' must be undone in the error handling path of the probe function, as already done in the remove function. Fixes: 1c6d47aa4f4b ("USB Gadget driver for Samsung s3c2410 ARM SoC") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- checkpatch reports: WARNING: Unknown commit id '1c6d47aa4f4b', maybe rebased or not pulled? According to https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/usb/gadget/s3c2410_udc.c?id=3fc154b6b8134b98bb94d60cad9a46ec1ffbe372 the commit ID looks correct to me. Maybe something should be tweaked somewhere before applying, but I don't know what! --- drivers/usb/gadget/udc/s3c2410_udc.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index 3fc436286bad..146250e93412 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1750,7 +1750,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc_clock = clk_get(NULL, "usb-device"); if (IS_ERR(udc_clock)) { dev_err(dev, "failed to get udc clock source\n"); - return PTR_ERR(udc_clock); + retval = PTR_ERR(udc_clock); + goto err_usb_bus_clk; } clk_prepare_enable(udc_clock); @@ -1773,7 +1774,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) base_addr = devm_platform_ioremap_resource(pdev, 0); if (!base_addr) { retval = -ENOMEM; - goto err; + goto err_udc_clk; } the_controller = udc; @@ -1791,7 +1792,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) if (retval != 0) { dev_err(dev, "cannot get irq %i, err %d\n", irq_usbd, retval); retval = -EBUSY; - goto err; + goto err_udc_clk; } dev_dbg(dev, "got irq %i\n", irq_usbd); @@ -1862,7 +1863,14 @@ static int s3c2410_udc_probe(struct platform_device *pdev) gpio_free(udc_info->vbus_pin); err_int: free_irq(irq_usbd, udc); -err: +err_udc_clk: + clk_disable_unprepare(udc_clock); + clk_put(udc_clock); + udc_clock = NULL; +err_usb_bus_clk: + clk_disable_unprepare(usb_bus_clock); + clk_put(usb_bus_clock); + usb_bus_clock = NULL; return retval; } -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-02-21 7:43 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-21 7:41 Christophe JAILLET [this message] 2021-02-21 7:41 ` [PATCH 2/2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()' Christophe JAILLET 2021-02-22 6:04 ` Dan Carpenter 2021-02-22 6:04 ` Dan Carpenter 2021-03-05 10:08 ` Krzysztof Kozlowski 2021-03-05 10:08 ` Krzysztof Kozlowski
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