4.4-stable review patch. If anyone has any objections, please let me know.
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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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/acpi/processor_driver.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -259,6 +259,9 @@ 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;