linux-kernel - [PATCH 4.18 073/145] rtc: omap: fix resource leak in registration error path

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Date:   Fri,  7 Sep 2018 23:08:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        Johan Hovold <johan@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 4.18 073/145] rtc: omap: fix resource leak in registration error path

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@...nel.org>

commit 551757eb052986ec81cebcc6301cc1c4f8dca938 upstream.

Make sure to deregister the pin controller in case rtc registration
fails.

Fixes: 57072758623f ("rtc: omap: switch to rtc_register_device")
Cc: stable <stable@...r.kernel.org>     # 4.14
Cc: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/rtc/rtc-omap.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -880,12 +880,14 @@ static int omap_rtc_probe(struct platfor
 
 	ret = rtc_register_device(rtc->rtc);
 	if (ret)
-		goto err;
+		goto err_deregister_pinctrl;
 
 	rtc_nvmem_register(rtc->rtc, &omap_rtc_nvmem_config);
 
 	return 0;
 
+err_deregister_pinctrl:
+	pinctrl_unregister(rtc->pctldev);
 err:
 	clk_disable_unprepare(rtc->clk);
 	device_init_wakeup(&pdev->dev, false);