mirror of https://gitee.com/openkylin/linux.git
ACPI / EC: Fix unexpected ec_remove_handlers() invocations
The ec_remove_handlers() is invoked without checking EC_FLAGS_HANDLERS_INSTALLED, this patch enhances this check to avoid issues that acpi_disable_gpe() is invoked unexpectedly to reduce the GPE runtime count. This may happen when the EC handler installation failed on some platforms. Reported-by: Venkat Raghavulu <venkat.raghavulu@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -844,6 +844,8 @@ static int ec_install_handlers(struct acpi_ec *ec)
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static void ec_remove_handlers(struct acpi_ec *ec)
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{
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if (!test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
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return;
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acpi_disable_gpe(NULL, ec->gpe);
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if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
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ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
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