[patch 07/13] ACPI/processor: Fix error handling in __acpi_processor_start()

From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>,
	Sebastian Siewior <bigeasy@linutronix.de>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	"David S. Miller" <davem@davemloft.net>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Lai Jiangshan <jiangshanlai@gmail.com>,
	Len Brown <lenb@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Tejun Heo <tj@kernel.org>, Tony Luck <tony.luck@intel.com>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	linux-acpi@vger.kernel.org
Subject: [patch 07/13] ACPI/processor: Fix error handling in __acpi_processor_start()
Date: Wed, 12 Apr 2017 22:07:33 +0200	[thread overview]
Message-ID: <20170412201042.695499645@linutronix.de> (raw)
In-Reply-To: 20170412200726.941336635@linutronix.de

[-- Attachment #1: ACPI-processor--Fix-error-handling-in-__acpi_processor_start--.patch --]
[-- Type: text/plain, Size: 781 bytes --]

When acpi_install_notify_handler() fails the cooling device stays
registered and the sysfs files created via acpi_pss_perf_init() are
leaked and the function returns success.

Undo acpi_pss_perf_init() and return a proper error code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Cc: linux-acpi@vger.kernel.org
---
 drivers/acpi/processor_driver.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -251,6 +251,9 @@ static int __acpi_processor_start(struct
 	if (ACPI_SUCCESS(status))
 		return 0;
 
+	result = -ENODEV;
+	acpi_pss_perf_exit(pr, device);
+
 err_power_exit:
 	acpi_processor_power_exit(pr);
 	return result;


