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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2017-11-18 00:15:58 +0300
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-11-29 22:11:13 +0100
commitf2eef045de9defbc6fc6b72b17f0941cbe26c81d (patch)
treeb4281bfd081a6aede1d53e3267ae796f75bf2b66 /drivers/rtc
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()
brcmstb_waketmr_probe() does not disable timer->clk on error paths. Found by Linux Driver Verification project (linuxtesting.org). Fixes: c4f07ecee22e ("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>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-brcmstb-waketimer.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c
index 796ac792a381..6cee61201c30 100644
--- a/drivers/rtc/rtc-brcmstb-waketimer.c
+++ b/drivers/rtc/rtc-brcmstb-waketimer.c
@@ -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;
}

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