ACPICA: Improve parameter validation for acpi_install_gpe_block.
Add the following checks: 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2) There is not already a gpe block attached to the device. Likewise, with acpi_remove_gpe_block, ensure that the incoming object is a device. Signed-off-by: Bob Moore <robert.moore@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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9186fb5807
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@ -583,6 +583,18 @@ acpi_install_gpe_block(acpi_handle gpe_device,
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goto unlock_and_exit;
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}
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/* Validate the parent device */
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if (node->type != ACPI_TYPE_DEVICE) {
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status = AE_TYPE;
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goto unlock_and_exit;
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}
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if (node->object) {
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status = AE_ALREADY_EXISTS;
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goto unlock_and_exit;
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}
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/*
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* For user-installed GPE Block Devices, the gpe_block_base_number
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* is always zero
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@ -666,6 +678,13 @@ acpi_status acpi_remove_gpe_block(acpi_handle gpe_device)
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goto unlock_and_exit;
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}
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/* Validate the parent device */
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if (node->type != ACPI_TYPE_DEVICE) {
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status = AE_TYPE;
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goto unlock_and_exit;
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}
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/* Get the device_object attached to the node */
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obj_desc = acpi_ns_get_attached_object(node);
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