From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: balbi@kernel.org, gregkh@linuxfoundation.org, krzk@kernel.org,
nathan@kernel.org, gustavoars@kernel.org, arnd@arndb.de,
ben-linux@fluff.org
Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.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 v2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()'
Date: Sat, 6 Mar 2021 15:21:45 +0100 [thread overview]
Message-ID: <20210306142145.3490-1-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: 3fc154b6b813 ("USB Gadget driver for Samsung s3c2410 ARM SoC")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v2: Fix a stupid error in the hash in Fixes:
---
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
next reply other threads:[~2021-03-06 14:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-06 14:21 Christophe JAILLET [this message]
2021-03-06 16:16 ` [PATCH 2/2 v2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()' Krzysztof Kozlowski
2021-03-06 17:22 ` Christophe JAILLET
2021-03-06 18:17 ` Krzysztof Kozlowski
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