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rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe() 

[ Upstream commit f2eef045de ]

brcmstb_waketmr_probe() does not disable timer->clk on error paths.

Found by Linux Driver Verification project (linuxtesting.org).

Fixes: c4f07ecee2 ("rtc: brcmstb-waketimer: Add Broadcom STB wake-timer")
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Alexey Khoroshilov 2017-11-18 00:15:58 +03:00 committed by Greg Kroah-Hartman
parent 31a0f45021
commit f113f79441
1 changed files with 12 additions and 3 deletions
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15
drivers/rtc/rtc-brcmstb-waketimer.c
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@ -253,7 +253,7 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev)
ret = devm_request_irq(dev, timer->irq, brcmstb_waketmr_irq, 0,
"brcmstb-waketimer", timer);
if (ret < 0)
return ret;
goto err_clk;
timer->reboot_notifier.notifier_call = brcmstb_waketmr_reboot;
register_reboot_notifier(&timer->reboot_notifier);
@ -262,12 +262,21 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev)
&brcmstb_waketmr_ops, THIS_MODULE);
if (IS_ERR(timer->rtc)) {
dev_err(dev, "unable to register device\n");
unregister_reboot_notifier(&timer->reboot_notifier);
return PTR_ERR(timer->rtc);
ret = PTR_ERR(timer->rtc);
goto err_notifier;
}
dev_info(dev, "registered, with irq %d\n", timer->irq);
return 0;
err_notifier:
unregister_reboot_notifier(&timer->reboot_notifier);
err_clk:
if (timer->clk)
clk_disable_unprepare(timer->clk);
return ret;
}