1 // SPDX-License-Identifier: GPL-2.0+
19 #include <linux/pci-acpi.h>
34 /* acpi_run_oshp - get control of hotplug from the firmware
36  * @handle - the handle of the hotplug controller.
41 	struct acpi_buffer	string = { ACPI_ALLOCATE_BUFFER, NULL };  in acpi_run_oshp()  local
43 	acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);  in acpi_run_oshp()
50 			       __func__, (char *)string.pointer, status);  in acpi_run_oshp()
53 			    __func__, (char *)string.pointer);  in acpi_run_oshp()
56 			(char *)string.pointer);  in acpi_run_oshp()
58 	kfree(string.pointer);  in acpi_run_oshp()
74 	struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL };  in acpi_get_hp_hw_control_from_firmware()  local
77 	 * If there's no ACPI host bridge (i.e., ACPI support is compiled  in acpi_get_hp_hw_control_from_firmware()
78 	 * into the kernel but the hardware platform doesn't support ACPI),  in acpi_get_hp_hw_control_from_firmware()
81 	host = pci_find_host_bridge(pdev->bus);  in acpi_get_hp_hw_control_from_firmware()
82 	root = acpi_pci_find_root(ACPI_HANDLE(&host->dev));  in acpi_get_hp_hw_control_from_firmware()
90 	if (root->osc_support_set) {  in acpi_get_hp_hw_control_from_firmware()
91 		if (host->native_shpc_hotplug)  in acpi_get_hp_hw_control_from_firmware()
93 		return -ENODEV;  in acpi_get_hp_hw_control_from_firmware()
105 	handle = ACPI_HANDLE(&pdev->dev);  in acpi_get_hp_hw_control_from_firmware()
112 		for (pbus = pdev->bus; pbus; pbus = pbus->parent) {  in acpi_get_hp_hw_control_from_firmware()
120 		acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);  in acpi_get_hp_hw_control_from_firmware()
122 			 (char *)string.pointer);  in acpi_get_hp_hw_control_from_firmware()
135 	kfree(string.pointer);  in acpi_get_hp_hw_control_from_firmware()
136 	return -ENODEV;  in acpi_get_hp_hw_control_from_firmware()
139 		 (char *)string.pointer);  in acpi_get_hp_hw_control_from_firmware()
140 	kfree(string.pointer);  in acpi_get_hp_hw_control_from_firmware()
160  * acpi_pci_check_ejectable - check if handle is ejectable ACPI PCI slot
193  * acpi_pci_detect_ejectable - check if the PCI bus has ejectable slots