| From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.4 017/101] ACPI/processor: Fix error handling in __acpi_processor_start() | Date | Thu, 8 Mar 2018 05:01:30 +0000 |
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From: Thomas Gleixner <tglx@linutronix.de>
[ Upstream commit a5cbdf693a60d5b86d4d21dfedd90f17754eb273 ]
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: Fenghua Yu <fenghua.yu@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: linux-acpi@vger.kernel.org Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Tejun Heo <tj@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Len Brown <lenb@kernel.org> Link: http://lkml.kernel.org/r/20170412201042.695499645@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- drivers/acpi/processor_driver.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 11154a330f07..2c086859a0bd 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -259,6 +259,9 @@ static int __acpi_processor_start(struct acpi_device *device) if (ACPI_SUCCESS(status)) return 0; + result = -ENODEV; + acpi_pss_perf_exit(pr, device); + err_power_exit: acpi_processor_power_exit(pr); return result; -- 2.14.1
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