diff --git a/Documentation/firmware-guide/acpi/dsd/leds.rst b/Documentation/firmware-guide/acpi/dsd/leds.rst
index aba1e9abfeeb9d98f09d3fe25dcaa8dc16ab1769..b99fff8e06f2804ca663d2c9d01744c9c515d2b1 100644
--- a/Documentation/firmware-guide/acpi/dsd/leds.rst
+++ b/Documentation/firmware-guide/acpi/dsd/leds.rst
@@ -90,10 +90,10 @@ where
References
==========
-[1] Device tree. <URL:https://www.devicetree.org>, referenced 2019-02-21.
+[1] Device tree. https://www.devicetree.org, referenced 2019-02-21.
[2] Advanced Configuration and Power Interface Specification.
- <URL:https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf>,
+ https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf,
referenced 2019-02-21.
[3] Documentation/devicetree/bindings/leds/common.txt
@@ -101,11 +101,11 @@ References
[4] Documentation/devicetree/bindings/media/video-interfaces.txt
[5] Device Properties UUID For _DSD.
- <URL:https://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf>,
+ https://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf,
referenced 2019-02-21.
[6] Hierarchical Data Extension UUID For _DSD.
- <URL:https://www.uefi.org/sites/default/files/resources/_DSD-hierarchical-data-extension-UUID-v1.1.pdf>,
+ https://www.uefi.org/sites/default/files/resources/_DSD-hierarchical-data-extension-UUID-v1.1.pdf,
referenced 2019-02-21.
[7] Documentation/firmware-guide/acpi/dsd/data-node-references.rst
diff --git a/Documentation/firmware-guide/acpi/enumeration.rst b/Documentation/firmware-guide/acpi/enumeration.rst
index c13fee8b02ba7a8ecf03ee96571e1bf14bfd117c..9f0d5c854fa434432f99f090a01097bc84607984 100644
--- a/Documentation/firmware-guide/acpi/enumeration.rst
+++ b/Documentation/firmware-guide/acpi/enumeration.rst
@@ -461,3 +461,157 @@ Otherwise, the _DSD itself is regarded as invalid and therefore the "compatible"
property returned by it is meaningless.
Refer to :doc:`DSD-properties-rules` for more information.
+
+PCI hierarchy representation
+============================
+
+Sometimes could be useful to enumerate a PCI device, knowing its position on the
+PCI bus.
+
+For example, some systems use PCI devices soldered directly on the mother board,
+in a fixed position (ethernet, Wi-Fi, serial ports, etc.). In this conditions it
+is possible to refer to these PCI devices knowing their position on the PCI bus
+topology.
+
+To identify a PCI device, a complete hierarchical description is required, from
+the chipset root port to the final device, through all the intermediate
+bridges/switches of the board.
+
+For example, let us assume to have a system with a PCIe serial port, an
+Exar XR17V3521, soldered on the main board. This UART chip also includes
+16 GPIOs and we want to add the property ``gpio-line-names`` [1] to these pins.
+In this case, the ``lspci`` output for this component is::
+
+ 07:00.0 Serial controller: Exar Corp. XR17V3521 Dual PCIe UART (rev 03)
+
+The complete ``lspci`` output (manually reduced in length) is::
+
+ 00:00.0 Host bridge: Intel Corp... Host Bridge (rev 0d)
+ ...
+ 00:13.0 PCI bridge: Intel Corp... PCI Express Port A #1 (rev fd)
+ 00:13.1 PCI bridge: Intel Corp... PCI Express Port A #2 (rev fd)
+ 00:13.2 PCI bridge: Intel Corp... PCI Express Port A #3 (rev fd)
+ 00:14.0 PCI bridge: Intel Corp... PCI Express Port B #1 (rev fd)
+ 00:14.1 PCI bridge: Intel Corp... PCI Express Port B #2 (rev fd)
+ ...
+ 05:00.0 PCI bridge: Pericom Semiconductor Device 2404 (rev 05)
+ 06:01.0 PCI bridge: Pericom Semiconductor Device 2404 (rev 05)
+ 06:02.0 PCI bridge: Pericom Semiconductor Device 2404 (rev 05)
+ 06:03.0 PCI bridge: Pericom Semiconductor Device 2404 (rev 05)
+ 07:00.0 Serial controller: Exar Corp. XR17V3521 Dual PCIe UART (rev 03) <-- Exar
+ ...
+
+The bus topology is::
+
+ -[0000:00]-+-00.0
+ ...
+ +-13.0-[01]----00.0
+ +-13.1-[02]----00.0
+ +-13.2-[03]--
+ +-14.0-[04]----00.0
+ +-14.1-[05-09]----00.0-[06-09]--+-01.0-[07]----00.0 <-- Exar
+ | +-02.0-[08]----00.0
+ | \-03.0-[09]--
+ ...
+ \-1f.1
+
+To describe this Exar device on the PCI bus, we must start from the ACPI name
+of the chipset bridge (also called "root port") with address::
+
+ Bus: 0 - Device: 14 - Function: 1
+
+To find this information is necessary disassemble the BIOS ACPI tables, in
+particular the DSDT (see also [2])::
+
+ mkdir ~/tables/
+ cd ~/tables/
+ acpidump > acpidump
+ acpixtract -a acpidump
+ iasl -e ssdt?.* -d dsdt.dat
+
+Now, in the dsdt.dsl, we have to search the device whose address is related to
+0x14 (device) and 0x01 (function). In this case we can find the following
+device::
+
+ Scope (_SB.PCI0)
+ {
+ ... other definitions follow ...
+ Device (RP02)
+ {
+ Method (_ADR, 0, NotSerialized) // _ADR: Address
+ {
+ If ((RPA2 != Zero))
+ {
+ Return (RPA2) /* \RPA2 */
+ }
+ Else
+ {
+ Return (0x00140001)
+ }
+ }
+ ... other definitions follow ...
+
+and the _ADR method [3] returns exactly the device/function couple that
+we are looking for. With this information and analyzing the above ``lspci``
+output (both the devices list and the devices tree), we can write the following
+ACPI description for the Exar PCIe UART, also adding the list of its GPIO line
+names::
+
+ Scope (_SB.PCI0.RP02)
+ {
+ Device (BRG1) //Bridge
+ {
+ Name (_ADR, 0x0000)
+
+ Device (BRG2) //Bridge
+ {
+ Name (_ADR, 0x00010000)
+
+ Device (EXAR)
+ {
+ Name (_ADR, 0x0000)
+
+ Name (_DSD, Package ()
+ {
+ ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+ Package ()
+ {
+ Package ()
+ {
+ "gpio-line-names",
+ Package ()
+ {
+ "mode_232",
+ "mode_422",
+ "mode_485",
+ "misc_1",
+ "misc_2",
+ "misc_3",
+ "",
+ "",
+ "aux_1",
+ "aux_2",
+ "aux_3",
+ }
+ }
+ }
+ })
+ }
+ }
+ }
+ }
+
+The location "_SB.PCI0.RP02" is obtained by the above investigation in the
+dsdt.dsl table, whereas the device names "BRG1", "BRG2" and "EXAR" are
+created analyzing the position of the Exar UART in the PCI bus topology.
+
+References
+==========
+
+[1] Documentation/firmware-guide/acpi/gpio-properties.rst
+
+[2] Documentation/admin-guide/acpi/initrd_table_override.rst
+
+[3] ACPI Specifications, Version 6.3 - Paragraph 6.1.1 _ADR Address)
+ https://uefi.org/sites/default/files/resources/ACPI_6_3_May16.pdf,
+ referenced 2020-11-18
diff --git a/Documentation/firmware-guide/acpi/gpio-properties.rst b/Documentation/firmware-guide/acpi/gpio-properties.rst
index 59aad6138b6e4e649646dc86222e6b326daa31c2..b36aa3e743d8479be91c739f4ed6c2a769748829 100644
--- a/Documentation/firmware-guide/acpi/gpio-properties.rst
+++ b/Documentation/firmware-guide/acpi/gpio-properties.rst
@@ -133,7 +133,61 @@ Example::
- gpio-line-names
-Example::
+The ``gpio-line-names`` declaration is a list of strings ("names"), which
+describes each line/pin of a GPIO controller/expander. This list, contained in
+a package, must be inserted inside the GPIO controller declaration of an ACPI
+table (typically inside the DSDT). The ``gpio-line-names`` list must respect the
+following rules (see also the examples):
+
+ - the first name in the list corresponds with the first line/pin of the GPIO
+ controller/expander
+ - the names inside the list must be consecutive (no "holes" are permitted)
+ - the list can be incomplete and can end before the last GPIO line: in
+ other words, it is not mandatory to fill all the GPIO lines
+ - empty names are allowed (two quotation marks ``""`` correspond to an empty
+ name)
+
+Example of a GPIO controller of 16 lines, with an incomplete list with two
+empty names::
+
+ Package () {
+ "gpio-line-names",
+ Package () {
+ "pin_0",
+ "pin_1",
+ "",
+ "",
+ "pin_3",
+ "pin_4_push_button",
+ }
+ }
+
+At runtime, the above declaration produces the following result (using the
+"libgpiod" tools)::
+
+ root@debian:~# gpioinfo gpiochip4
+ gpiochip4 - 16 lines:
+ line 0: "pin_0" unused input active-high
+ line 1: "pin_1" unused input active-high
+ line 2: unnamed unused input active-high
+ line 3: unnamed unused input active-high
+ line 4: "pin_3" unused input active-high
+ line 5: "pin_4_push_button" unused input active-high
+ line 6: unnamed unused input active-high
+ line 7 unnamed unused input active-high
+ line 8: unnamed unused input active-high
+ line 9: unnamed unused input active-high
+ line 10: unnamed unused input active-high
+ line 11: unnamed unused input active-high
+ line 12: unnamed unused input active-high
+ line 13: unnamed unused input active-high
+ line 14: unnamed unused input active-high
+ line 15: unnamed unused input active-high
+ root@debian:~# gpiofind pin_4_push_button
+ gpiochip4 5
+ root@debian:~#
+
+Another example::
Package () {
"gpio-line-names",
diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index fb72903385933592f7d37eea75489afc14c15a6d..d50261d05f3a1ab63dfd09878c262943e0bd79e8 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -117,13 +117,6 @@ static inline bool __acpi_aml_busy(void)
return false;
}
-static inline bool __acpi_aml_opened(void)
-{
- if (acpi_aml_io.flags & ACPI_AML_OPEN)
- return true;
- return false;
-}
-
static inline bool __acpi_aml_used(void)
{
return acpi_aml_io.usages ? true : false;
diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c
index 5c1e9ea43123e94de355cc4cc5fd906aab6fd8ea..ca28183f4d1329ea22aa4c775c66334da91c7d06 100644
--- a/drivers/acpi/acpi_watchdog.c
+++ b/drivers/acpi/acpi_watchdog.c
@@ -151,11 +151,7 @@ void __init acpi_watchdog_init(void)
found = false;
resource_list_for_each_entry(rentry, &resource_list) {
if (rentry->res->flags == res.flags &&
- resource_overlaps(rentry->res, &res)) {
- if (res.start < rentry->res->start)
- rentry->res->start = res.start;
- if (res.end > rentry->res->end)
- rentry->res->end = res.end;
+ resource_union(rentry->res, &res, rentry->res)) {
found = true;
break;
}
diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h
index 89101e53324b873d33d00dfcbea6124a882d5e21..94e18bb76556e40cac81acf08fe89f8c8b36bf24 100644
--- a/drivers/acpi/acpica/accommon.h
+++ b/drivers/acpi/acpica/accommon.h
@@ -13,7 +13,7 @@
/*
* Common set of includes for all ACPICA source files.
* We put them here because we don't want to duplicate them
- * in the the source code again and again.
+ * in the source code again and again.
*
* Note: The order of these include files is important.
*/
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index 738d4b231f34ae8a4356ce25f5288d5e29364548..a8a4c8c9b9efaa5d0c274f9c1de12f285ba0fb58 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -21,7 +21,8 @@ extern u8 acpi_gbl_default_address_spaces[];
/* Local prototypes */
static void
-acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node);
+acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
+ acpi_adr_space_type space_id);
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
@@ -684,10 +685,12 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, NULL,
&info, NULL);
- /* Special case for EC: handle "orphan" _REG methods with no region */
-
- if (space_id == ACPI_ADR_SPACE_EC) {
- acpi_ev_orphan_ec_reg_method(node);
+ /*
+ * Special case for EC and GPIO: handle "orphan" _REG methods with
+ * no region.
+ */
+ if (space_id == ACPI_ADR_SPACE_EC || space_id == ACPI_ADR_SPACE_GPIO) {
+ acpi_ev_execute_orphan_reg_method(node, space_id);
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES,
@@ -760,31 +763,28 @@ acpi_ev_reg_run(acpi_handle obj_handle,
/*******************************************************************************
*
- * FUNCTION: acpi_ev_orphan_ec_reg_method
+ * FUNCTION: acpi_ev_execute_orphan_reg_method
*
- * PARAMETERS: ec_device_node - Namespace node for an EC device
+ * PARAMETERS: device_node - Namespace node for an ACPI device
+ * space_id - The address space ID
*
* RETURN: None
*
- * DESCRIPTION: Execute an "orphan" _REG method that appears under the EC
+ * DESCRIPTION: Execute an "orphan" _REG method that appears under an ACPI
* device. This is a _REG method that has no corresponding region
- * within the EC device scope. The orphan _REG method appears to
- * have been enabled by the description of the ECDT in the ACPI
- * specification: "The availability of the region space can be
- * detected by providing a _REG method object underneath the
- * Embedded Controller device."
- *
- * To quickly access the EC device, we use the ec_device_node used
- * during EC handler installation. Otherwise, we would need to
- * perform a time consuming namespace walk, executing _HID
- * methods to find the EC device.
+ * within the device's scope. ACPI tables depending on these
+ * "orphan" _REG methods have been seen for both EC and GPIO
+ * Operation Regions. Presumably the Windows ACPI implementation
+ * always calls the _REG method independent of the presence of
+ * an actual Operation Region with the correct address space ID.
*
* MUTEX: Assumes the namespace is locked
*
******************************************************************************/
static void
-acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
+acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
+ acpi_adr_space_type space_id)
{
acpi_handle reg_method;
struct acpi_namespace_node *next_node;
@@ -792,9 +792,9 @@ acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
struct acpi_object_list args;
union acpi_object objects[2];
- ACPI_FUNCTION_TRACE(ev_orphan_ec_reg_method);
+ ACPI_FUNCTION_TRACE(ev_execute_orphan_reg_method);
- if (!ec_device_node) {
+ if (!device_node) {
return_VOID;
}
@@ -804,7 +804,7 @@ acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
/* Get a handle to a _REG method immediately under the EC device */
- status = acpi_get_handle(ec_device_node, METHOD_NAME__REG, ®_method);
+ status = acpi_get_handle(device_node, METHOD_NAME__REG, ®_method);
if (ACPI_FAILURE(status)) {
goto exit; /* There is no _REG method present */
}
@@ -816,23 +816,23 @@ acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
* with other space IDs to be present; but the code below will then
* execute the _REG method with the embedded_control space_ID argument.
*/
- next_node = acpi_ns_get_next_node(ec_device_node, NULL);
+ next_node = acpi_ns_get_next_node(device_node, NULL);
while (next_node) {
if ((next_node->type == ACPI_TYPE_REGION) &&
(next_node->object) &&
- (next_node->object->region.space_id == ACPI_ADR_SPACE_EC)) {
+ (next_node->object->region.space_id == space_id)) {
goto exit; /* Do not execute the _REG */
}
- next_node = acpi_ns_get_next_node(ec_device_node, next_node);
+ next_node = acpi_ns_get_next_node(device_node, next_node);
}
- /* Evaluate the _REG(embedded_control,Connect) method */
+ /* Evaluate the _REG(space_id,Connect) method */
args.count = 2;
args.pointer = objects;
objects[0].type = ACPI_TYPE_INTEGER;
- objects[0].integer.value = ACPI_ADR_SPACE_EC;
+ objects[0].integer.value = space_id;
objects[1].type = ACPI_TYPE_INTEGER;
objects[1].integer.value = ACPI_REG_CONNECT;
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 0cea9c363acee958dae66b64fa7d8b3fdb64fdf6..167a1c2495ab3e3f19cddab7eead42636682f1b6 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -71,11 +71,13 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node,
acpi_status status;
const union acpi_predefined_info *predefined;
+ ACPI_FUNCTION_TRACE(ns_check_return_value);
+
/* If not a predefined name, we cannot validate the return object */
predefined = info->predefined;
if (!predefined) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/*
@@ -83,7 +85,7 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node,
* validate the return object
*/
if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/*
@@ -102,7 +104,7 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node,
if (acpi_gbl_disable_auto_repair ||
(!predefined->info.expected_btypes) ||
(predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/*
@@ -163,7 +165,7 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node,
node->flags |= ANOBJ_EVALUATED;
}
- return (status);
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c
index 237b3ddeb075705968331b400d025538c023dd44..1875b1cba2029f9a467845008a39bed1acb840a4 100644
--- a/drivers/acpi/acpica/nsprepkg.c
+++ b/drivers/acpi/acpica/nsprepkg.c
@@ -59,7 +59,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
u32 count;
u32 i;
- ACPI_FUNCTION_NAME(ns_check_package);
+ ACPI_FUNCTION_TRACE(ns_check_package);
/* The package info for this name is in the next table entry */
@@ -88,14 +88,14 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
*/
if (!count) {
if (package->ret_info.type == ACPI_PTYPE1_VAR) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Return Package has no elements (empty)"));
- return (AE_AML_OPERAND_VALUE);
+ return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
/*
@@ -152,7 +152,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
package->ret_info.
object_type1, i);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
elements++;
@@ -186,7 +186,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
object_type[i],
i);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
} else {
/* These are the optional package elements */
@@ -198,7 +198,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
tail_object_type,
i);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
}
@@ -214,7 +214,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
elements++;
@@ -234,7 +234,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
/*
@@ -279,7 +279,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
acpi_ns_wrap_with_package(info, return_object,
return_object_ptr);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
/* Update locals to point to the new package (of 1 element) */
@@ -316,7 +316,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
package->ret_info.
object_type1, 0);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
/* Validate length of the UUID buffer */
@@ -326,14 +326,14 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
info->full_pathname,
info->node_flags,
"Invalid length for UUID Buffer"));
- return (AE_AML_OPERAND_VALUE);
+ return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
status = acpi_ns_check_object_type(info, elements + 1,
package->ret_info.
object_type2, 0);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
elements += 2;
@@ -350,10 +350,10 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
"Invalid internal return type in table entry: %X",
package->ret_info.type));
- return (AE_AML_INTERNAL);
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
- return (status);
+ return_ACPI_STATUS(status);
package_too_small:
@@ -363,7 +363,7 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
"Return Package is too small - found %u elements, expected %u",
count, expected_count));
- return (AE_AML_OPERAND_VALUE);
+ return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
/*******************************************************************************
@@ -708,6 +708,8 @@ acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
acpi_status status;
u32 i;
+ ACPI_FUNCTION_TRACE(ns_check_package_elements);
+
/*
* Up to two groups of package elements are supported by the data
* structure. All elements in each group must be of the same type.
@@ -717,7 +719,7 @@ acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
status = acpi_ns_check_object_type(info, this_element,
type1, i + start_index);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
this_element++;
@@ -728,11 +730,11 @@ acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
type2,
(i + count1 + start_index));
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
this_element++;
}
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index 125143c41bb8100bb4f5953ba1070bf400c22414..d2c8d8279e7a2b45c9db23f63181d5f4e8bd0d07 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -155,15 +155,17 @@ acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
const struct acpi_repair_info *predefined;
acpi_status status;
+ ACPI_FUNCTION_TRACE(ns_complex_repairs);
+
/* Check if this name is in the list of repairable names */
predefined = acpi_ns_match_complex_repair(node);
if (!predefined) {
- return (validate_status);
+ return_ACPI_STATUS(validate_status);
}
status = predefined->repair_function(info, return_object_ptr);
- return (status);
+ return_ACPI_STATUS(status);
}
/******************************************************************************
@@ -344,17 +346,19 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info,
u16 original_ref_count;
u32 i;
+ ACPI_FUNCTION_TRACE(ns_repair_CID);
+
/* Check for _CID as a simple string */
if (return_object->common.type == ACPI_TYPE_STRING) {
status = acpi_ns_repair_HID(info, return_object_ptr);
- return (status);
+ return_ACPI_STATUS(status);
}
/* Exit if not a Package */
if (return_object->common.type != ACPI_TYPE_PACKAGE) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/* Examine each element of the _CID package */
@@ -366,7 +370,7 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info,
status = acpi_ns_repair_HID(info, element_ptr);
if (ACPI_FAILURE(status)) {
- return (status);
+ return_ACPI_STATUS(status);
}
if (original_element != *element_ptr) {
@@ -380,7 +384,7 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info,
element_ptr++;
}
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
@@ -491,16 +495,15 @@ acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
- union acpi_operand_object *new_string;
- char *source;
char *dest;
+ char *source;
ACPI_FUNCTION_NAME(ns_repair_HID);
/* We only care about string _HID objects (not integers) */
if (return_object->common.type != ACPI_TYPE_STRING) {
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
if (return_object->string.length == 0) {
@@ -511,14 +514,7 @@ acpi_ns_repair_HID(struct acpi_evaluate_info *info,
/* Return AE_OK anyway, let driver handle it */
info->return_flags |= ACPI_OBJECT_REPAIRED;
- return (AE_OK);
- }
-
- /* It is simplest to always create a new string object */
-
- new_string = acpi_ut_create_string_object(return_object->string.length);
- if (!new_string) {
- return (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_OK);
}
/*
@@ -530,7 +526,7 @@ acpi_ns_repair_HID(struct acpi_evaluate_info *info,
source = return_object->string.pointer;
if (*source == '*') {
source++;
- new_string->string.length--;
+ return_object->string.length--;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Removed invalid leading asterisk\n",
@@ -545,13 +541,12 @@ acpi_ns_repair_HID(struct acpi_evaluate_info *info,
* "NNNN####" where N is an uppercase letter or decimal digit, and
* # is a hex digit.
*/
- for (dest = new_string->string.pointer; *source; dest++, source++) {
+ for (dest = return_object->string.pointer; *source; dest++, source++) {
*dest = (char)toupper((int)*source);
}
+ return_object->string.pointer[return_object->string.length] = 0;
- acpi_ut_remove_reference(return_object);
- *return_object_ptr = new_string;
- return (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index 3294cc8dc0730340c2b9703b09a8952ae60019a2..c7fdb12c33105adf0b33481b84493ac078d9eddd 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -287,7 +287,7 @@ struct apei_res {
};
/* Collect all resources requested, to avoid conflict */
-struct apei_resources apei_resources_all = {
+static struct apei_resources apei_resources_all = {
.iomem = LIST_HEAD_INIT(apei_resources_all.iomem),
.ioport = LIST_HEAD_INIT(apei_resources_all.ioport),
};
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e0cb1bcfffb293b64a97ea2586718bf08763aaee..13565629ce0a8c570b68de07ce21669ce94f6539 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -169,7 +169,7 @@ struct acpi_ec_query {
};
static int acpi_ec_query(struct acpi_ec *ec, u8 *data);
-static void advance_transaction(struct acpi_ec *ec);
+static void advance_transaction(struct acpi_ec *ec, bool interrupt);
static void acpi_ec_event_handler(struct work_struct *work);
static void acpi_ec_event_processor(struct work_struct *work);
@@ -335,12 +335,12 @@ static const char *acpi_ec_cmd_string(u8 cmd)
* GPE Registers
* -------------------------------------------------------------------------- */
-static inline bool acpi_ec_is_gpe_raised(struct acpi_ec *ec)
+static inline bool acpi_ec_gpe_status_set(struct acpi_ec *ec)
{
acpi_event_status gpe_status = 0;
(void)acpi_get_gpe_status(NULL, ec->gpe, &gpe_status);
- return (gpe_status & ACPI_EVENT_FLAG_STATUS_SET) ? true : false;
+ return !!(gpe_status & ACPI_EVENT_FLAG_STATUS_SET);
}
static inline void acpi_ec_enable_gpe(struct acpi_ec *ec, bool open)
@@ -351,14 +351,14 @@ static inline void acpi_ec_enable_gpe(struct acpi_ec *ec, bool open)
BUG_ON(ec->reference_count < 1);
acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);
}
- if (acpi_ec_is_gpe_raised(ec)) {
+ if (acpi_ec_gpe_status_set(ec)) {
/*
* On some platforms, EN=1 writes cannot trigger GPE. So
* software need to manually trigger a pseudo GPE event on
* EN=1 writes.
*/
ec_dbg_raw("Polling quirk");
- advance_transaction(ec);
+ advance_transaction(ec, false);
}
}
@@ -372,23 +372,6 @@ static inline void acpi_ec_disable_gpe(struct acpi_ec *ec, bool close)
}
}
-static inline void acpi_ec_clear_gpe(struct acpi_ec *ec)
-{
- /*
- * GPE STS is a W1C register, which means:
- * 1. Software can clear it without worrying about clearing other
- * GPEs' STS bits when the hardware sets them in parallel.
- * 2. As long as software can ensure only clearing it when it is
- * set, hardware won't set it in parallel.
- * So software can clear GPE in any contexts.
- * Warning: do not move the check into advance_transaction() as the
- * EC commands will be sent without GPE raised.
- */
- if (!acpi_ec_is_gpe_raised(ec))
- return;
- acpi_clear_gpe(NULL, ec->gpe);
-}
-
/* --------------------------------------------------------------------------
* Transaction Management
* -------------------------------------------------------------------------- */
@@ -488,7 +471,7 @@ static inline void __acpi_ec_enable_event(struct acpi_ec *ec)
* Unconditionally invoke this once after enabling the event
* handling mechanism to detect the pending events.
*/
- advance_transaction(ec);
+ advance_transaction(ec, false);
}
static inline void __acpi_ec_disable_event(struct acpi_ec *ec)
@@ -632,24 +615,41 @@ static inline void ec_transaction_transition(struct acpi_ec *ec, unsigned long f
}
}
-static void advance_transaction(struct acpi_ec *ec)
+static void acpi_ec_spurious_interrupt(struct acpi_ec *ec, struct transaction *t)
{
- struct transaction *t;
- u8 status;
+ if (t->irq_count < ec_storm_threshold)
+ ++t->irq_count;
+
+ /* Trigger if the threshold is 0 too. */
+ if (t->irq_count == ec_storm_threshold)
+ acpi_ec_mask_events(ec);
+}
+
+static void advance_transaction(struct acpi_ec *ec, bool interrupt)
+{
+ struct transaction *t = ec->curr;
bool wakeup = false;
+ u8 status;
+
+ ec_dbg_stm("%s (%d)", interrupt ? "IRQ" : "TASK", smp_processor_id());
- ec_dbg_stm("%s (%d)", in_interrupt() ? "IRQ" : "TASK",
- smp_processor_id());
/*
- * By always clearing STS before handling all indications, we can
- * ensure a hardware STS 0->1 change after this clearing can always
- * trigger a GPE interrupt.
+ * Clear GPE_STS upfront to allow subsequent hardware GPE_STS 0->1
+ * changes to always trigger a GPE interrupt.
+ *
+ * GPE STS is a W1C register, which means:
+ *
+ * 1. Software can clear it without worrying about clearing the other
+ * GPEs' STS bits when the hardware sets them in parallel.
+ *
+ * 2. As long as software can ensure only clearing it when it is set,
+ * hardware won't set it in parallel.
*/
- if (ec->gpe >= 0)
- acpi_ec_clear_gpe(ec);
+ if (ec->gpe >= 0 && acpi_ec_gpe_status_set(ec))
+ acpi_clear_gpe(NULL, ec->gpe);
status = acpi_ec_read_status(ec);
- t = ec->curr;
+
/*
* Another IRQ or a guarded polling mode advancement is detected,
* the next QR_EC submission is then allowed.
@@ -661,56 +661,43 @@ static void advance_transaction(struct acpi_ec *ec)
clear_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags);
acpi_ec_complete_query(ec);
}
+ if (!t)
+ goto out;
}
- if (!t)
- goto err;
+
if (t->flags & ACPI_EC_COMMAND_POLL) {
if (t->wlen > t->wi) {
- if ((status & ACPI_EC_FLAG_IBF) == 0)
+ if (!(status & ACPI_EC_FLAG_IBF))
acpi_ec_write_data(ec, t->wdata[t->wi++]);
- else
- goto err;
+ else if (interrupt && !(status & ACPI_EC_FLAG_SCI))
+ acpi_ec_spurious_interrupt(ec, t);
} else if (t->rlen > t->ri) {
- if ((status & ACPI_EC_FLAG_OBF) == 1) {
+ if (status & ACPI_EC_FLAG_OBF) {
t->rdata[t->ri++] = acpi_ec_read_data(ec);
if (t->rlen == t->ri) {
ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);
+ wakeup = true;
if (t->command == ACPI_EC_COMMAND_QUERY)
ec_dbg_evt("Command(%s) completed by hardware",
acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
- wakeup = true;
}
- } else
- goto err;
- } else if (t->wlen == t->wi &&
- (status & ACPI_EC_FLAG_IBF) == 0) {
+ } else if (interrupt && !(status & ACPI_EC_FLAG_SCI)) {
+ acpi_ec_spurious_interrupt(ec, t);
+ }
+ } else if (t->wlen == t->wi && !(status & ACPI_EC_FLAG_IBF)) {
ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);
wakeup = true;
}
- goto out;
} else if (!(status & ACPI_EC_FLAG_IBF)) {
acpi_ec_write_cmd(ec, t->command);
ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);
- goto out;
- }
-err:
- /*
- * If SCI bit is set, then don't think it's a false IRQ
- * otherwise will take a not handled IRQ as a false one.
- */
- if (!(status & ACPI_EC_FLAG_SCI)) {
- if (in_interrupt() && t) {
- if (t->irq_count < ec_storm_threshold)
- ++t->irq_count;
- /* Allow triggering on 0 threshold */
- if (t->irq_count == ec_storm_threshold)
- acpi_ec_mask_events(ec);
- }
}
+
out:
if (status & ACPI_EC_FLAG_SCI)
acpi_ec_submit_query(ec);
- if (wakeup && in_interrupt())
+
+ if (wakeup && interrupt)
wake_up(&ec->wait);
}
@@ -767,7 +754,7 @@ static int ec_poll(struct acpi_ec *ec)
if (!ec_guard(ec))
return 0;
spin_lock_irqsave(&ec->lock, flags);
- advance_transaction(ec);
+ advance_transaction(ec, false);
spin_unlock_irqrestore(&ec->lock, flags);
} while (time_before(jiffies, delay));
pr_debug("controller reset, restart transaction\n");
@@ -1216,7 +1203,7 @@ static void acpi_ec_check_event(struct acpi_ec *ec)
* taking care of it.
*/
if (!ec->curr)
- advance_transaction(ec);
+ advance_transaction(ec, false);
spin_unlock_irqrestore(&ec->lock, flags);
}
}
@@ -1259,7 +1246,7 @@ static void acpi_ec_handle_interrupt(struct acpi_ec *ec)
unsigned long flags;
spin_lock_irqsave(&ec->lock, flags);
- advance_transaction(ec);
+ advance_transaction(ec, true);
spin_unlock_irqrestore(&ec->lock, flags);
}
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index e3638bafb94110f541ce1bd0f3cfd7f3e9ff8344..cb229e24c56375b0a89255667436abc46fa9b0d3 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -105,7 +105,8 @@ struct acpi_device_bus_id {
int acpi_device_add(struct acpi_device *device,
void (*release)(struct device *));
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
- int type, unsigned long long sta);
+ int type, unsigned long long sta,
+ struct acpi_device_info *info);
int acpi_device_setup_files(struct acpi_device *dev);
void acpi_device_remove_files(struct acpi_device *dev);
void acpi_device_add_finalize(struct acpi_device *device);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index c12b5fb3e8fbaae9c8343730c450d6ba9ebd571a..0bf072cef6cfd32057edece53d01b634357d95fe 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -722,9 +722,7 @@ static void acpi_pci_root_validate_resources(struct device *dev,
* our resources no longer match the ACPI _CRS, but
* the kernel resource tree doesn't allow overlaps.
*/
- if (resource_overlaps(res1, res2)) {
- res2->start = min(res1->start, res2->start);
- res2->end = max(res1->end, res2->end);
+ if (resource_union(res1, res2, res2)) {
dev_info(dev, "host bridge window expanded to %pR; %pR ignored\n",
res2, res1);
free = true;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 8048da85b7e0787b340086200776a35f6310f06b..189a0d4c6d06bee3ce626e7729998126c75be551 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -939,7 +939,7 @@ int acpi_add_power_resource(acpi_handle handle)
device = &resource->device;
acpi_init_device_object(device, handle, ACPI_BUS_TYPE_POWER,
- ACPI_STA_DEFAULT);
+ ACPI_STA_DEFAULT, NULL);
mutex_init(&resource->resource_lock);
INIT_LIST_HEAD(&resource->list_node);
INIT_LIST_HEAD(&resource->dependents);
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index f66236cff69b02ee6a8e3ac8014c35e49571a8a6..d93e400940a31b28aa90139e6958cae49abdd703 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -31,7 +31,6 @@
#include <asm/apic.h>
#endif
-#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_idle");
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index b04a68950ff14299804809b10f480419219fdaa6..0dcedd652807c97518658795d78130d07b1373f4 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -22,7 +22,6 @@
#define PREFIX "ACPI: "
-#define ACPI_PROCESSOR_CLASS "processor"
#define ACPI_PROCESSOR_FILE_PERFORMANCE "performance"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_perflib");
@@ -616,7 +615,6 @@ int acpi_processor_preregister_performance(
continue;
pr->performance = per_cpu_ptr(performance, i);
- cpumask_set_cpu(i, pr->performance->shared_cpu_map);
pdomain = &(pr->performance->domain_info);
if (acpi_processor_get_psd(pr->handle, pdomain)) {
retval = -EINVAL;
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 6c7d05b37c986894ab211d7dd3ff7841b3f3cc02..677a132be242b68d04721a3a3d44b112085133ae 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -19,8 +19,6 @@
#define PREFIX "ACPI: "
-#define ACPI_PROCESSOR_CLASS "processor"
-
#ifdef CONFIG_CPU_FREQ
/* If a passive cooling situation is detected, primarily CPUfreq is used, as it
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index a0bd56ece3ff55a4cdf0388ee026750123b69022..b1876534324b56954ced8f23a46161f1f67246ee 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -22,7 +22,6 @@
#define PREFIX "ACPI: "
-#define ACPI_PROCESSOR_CLASS "processor"
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_throttling");
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 58203193417ed5e8804dc67394fd14f00d7f17e9..20a7892c6d3fd86f998b44929d4ff02054d1e39b 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -534,7 +534,7 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
ret = c->preproc(ares, c->preproc_data);
if (ret < 0) {
c->error = ret;
- return AE_CTRL_TERMINATE;
+ return AE_ABORT_METHOD;
} else if (ret > 0) {
return AE_OK;
}
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index e6d9f4de280000d17e9a29ef5c0af478782e2280..3b0b6dd34914fbf7e6c4710c05f94c6c300ad288 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -711,26 +711,4 @@ static struct acpi_driver acpi_sbs_driver = {
},
.drv.pm = &acpi_sbs_pm,
};
-
-static int __init acpi_sbs_init(void)
-{
- int result = 0;
-
- if (acpi_disabled)
- return -ENODEV;
-
- result = acpi_bus_register_driver(&acpi_sbs_driver);
- if (result < 0)
- return -ENODEV;
-
- return 0;
-}
-
-static void __exit acpi_sbs_exit(void)
-{
- acpi_bus_unregister_driver(&acpi_sbs_driver);
- return;
-}
-
-module_init(acpi_sbs_init);
-module_exit(acpi_sbs_exit);
+module_acpi_driver(acpi_sbs_driver);
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 519963bcc047ebde75d3457ac80c958964a6ac19..a1b226eb2ce259f81090757a26db3c4114f081f3 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -51,8 +51,8 @@ static u64 spcr_uart_addr;
struct acpi_dep_data {
struct list_head node;
- acpi_handle master;
- acpi_handle slave;
+ acpi_handle supplier;
+ acpi_handle consumer;
};
void acpi_scan_lock_acquire(void)
@@ -719,6 +719,42 @@ int acpi_device_add(struct acpi_device *device,
/* --------------------------------------------------------------------------
Device Enumeration
-------------------------------------------------------------------------- */
+static bool acpi_info_matches_ids(struct acpi_device_info *info,
+ const char * const ids[])
+{
+ struct acpi_pnp_device_id_list *cid_list = NULL;
+ int i;
+
+ if (!(info->valid & ACPI_VALID_HID))
+ return false;
+
+ if (info->valid & ACPI_VALID_CID)
+ cid_list = &info->compatible_id_list;
+
+ for (i = 0; ids[i]; i++) {
+ int j;
+
+ if (!strcmp(info->hardware_id.string, ids[i]))
+ return true;
+
+ if (!cid_list)
+ continue;
+
+ for (j = 0; j < cid_list->count; j++) {
+ if (!strcmp(cid_list->ids[j].string, ids[i]))
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/* List of HIDs for which we ignore matching ACPI devices, when checking _DEP lists. */
+static const char * const acpi_ignore_dep_ids[] = {
+ "PNP0D80", /* Windows-compatible System Power Management Controller */
+ NULL
+};
+
static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
{
struct acpi_device *device = NULL;
@@ -1236,10 +1272,8 @@ static bool acpi_object_is_system_bus(acpi_handle handle)
}
static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
- int device_type)
+ int device_type, struct acpi_device_info *info)
{
- acpi_status status;
- struct acpi_device_info *info;
struct acpi_pnp_device_id_list *cid_list;
int i;
@@ -1250,8 +1284,7 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
break;
}
- status = acpi_get_object_info(handle, &info);
- if (ACPI_FAILURE(status)) {
+ if (!info) {
pr_err(PREFIX "%s: Error reading device info\n",
__func__);
return;
@@ -1276,8 +1309,6 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
if (info->valid & ACPI_VALID_CLS)
acpi_add_id(pnp, info->class_code.string);
- kfree(info);
-
/*
* Some devices don't reliably have _HIDs & _CIDs, so add
* synthetic HIDs to make sure drivers can find them.
@@ -1583,7 +1614,8 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
}
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
- int type, unsigned long long sta)
+ int type, unsigned long long sta,
+ struct acpi_device_info *info)
{
INIT_LIST_HEAD(&device->pnp.ids);
device->device_type = type;
@@ -1592,7 +1624,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
fwnode_init(&device->fwnode, &acpi_device_fwnode_ops);
acpi_set_device_status(device, sta);
acpi_device_get_busid(device);
- acpi_set_pnp_ids(handle, &device->pnp, type);
+ acpi_set_pnp_ids(handle, &device->pnp, type, info);
acpi_init_properties(device);
acpi_bus_get_flags(device);
device->flags.match_driver = false;
@@ -1620,14 +1652,20 @@ static int acpi_add_single_object(struct acpi_device **child,
int result;
struct acpi_device *device;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_device_info *info = NULL;
+
+ if (handle != ACPI_ROOT_OBJECT && type == ACPI_BUS_TYPE_DEVICE)
+ acpi_get_object_info(handle, &info);
device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL);
if (!device) {
printk(KERN_ERR PREFIX "Memory allocation error\n");
+ kfree(info);
return -ENOMEM;
}
- acpi_init_device_object(device, handle, type, sta);
+ acpi_init_device_object(device, handle, type, sta, info);
+ kfree(info);
/*
* For ACPI_BUS_TYPE_DEVICE getting the status is delayed till here so
* that we can call acpi_bus_get_status() and use its quirk handling.
@@ -1833,13 +1871,7 @@ static void acpi_device_dep_initialize(struct acpi_device *adev)
continue;
}
- /*
- * Skip the dependency of Windows System Power
- * Management Controller
- */
- skip = info->valid & ACPI_VALID_HID &&
- !strcmp(info->hardware_id.string, "INT3396");
-
+ skip = acpi_info_matches_ids(info, acpi_ignore_dep_ids);
kfree(info);
if (skip)
@@ -1849,8 +1881,8 @@ static void acpi_device_dep_initialize(struct acpi_device *adev)
if (!dep)
return;
- dep->master = dep_devices.handles[i];
- dep->slave = adev->handle;
+ dep->supplier = dep_devices.handles[i];
+ dep->consumer = adev->handle;
adev->dep_unmet++;
mutex_lock(&acpi_dep_list_lock);
@@ -2026,8 +2058,8 @@ void acpi_walk_dep_device_list(acpi_handle handle)
mutex_lock(&acpi_dep_list_lock);
list_for_each_entry_safe(dep, tmp, &acpi_dep_list, node) {
- if (dep->master == handle) {
- acpi_bus_get_device(dep->slave, &adev);
+ if (dep->supplier == handle) {
+ acpi_bus_get_device(dep->consumer, &adev);
if (!adev)
continue;
diff --git a/drivers/acpi/tiny-power-button.c b/drivers/acpi/tiny-power-button.c
index 420e61b8eaaed72de60c279dfa87b7b07716a45e..a19f0e4e69f7602f5ef127e084b9cf87edda5aff 100644
--- a/drivers/acpi/tiny-power-button.c
+++ b/drivers/acpi/tiny-power-button.c
@@ -40,6 +40,4 @@ static struct acpi_driver acpi_tiny_power_button_driver = {
},
};
-module_driver(acpi_tiny_power_button_driver,
- acpi_bus_register_driver,
- acpi_bus_unregister_driver);
+module_acpi_driver(acpi_tiny_power_button_driver);
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 4f5463b2a217817d006e85df8180818871115491..811d298637cb250841e54cef4af9c37b9b7ecf54 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -140,6 +140,13 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
},
{
.callback = video_detect_force_vendor,
+ .ident = "GIGABYTE GB-BXBT-2807",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"),
+ },
+ },
+ {
.ident = "Sony VPCEH3U1E",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 5eb175933a5b455429a2f98a994b9ba58395bdcf..d4f39a20aa2ac5ddbfbd09b974944de4f8bc4759 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -64,14 +64,14 @@
-------------------------------------------------------------------------- */
-/* ACPI PCI Interrupt Link (pci_link.c) */
+/* ACPI PCI Interrupt Link */
int acpi_irq_penalty_init(void);
int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
int *polarity, char **name);
int acpi_pci_link_free_irq(acpi_handle handle);
-/* ACPI PCI Device Binding (pci_bind.c) */
+/* ACPI PCI Device Binding */
struct pci_bus;
@@ -94,14 +94,6 @@ void pci_acpi_crs_quirks(void);
static inline void pci_acpi_crs_quirks(void) { }
#endif
-/* --------------------------------------------------------------------------
- Processor
- -------------------------------------------------------------------------- */
-
-#define ACPI_PROCESSOR_LIMIT_NONE 0x00
-#define ACPI_PROCESSOR_LIMIT_INCREMENT 0x01
-#define ACPI_PROCESSOR_LIMIT_DECREMENT 0x02
-
/*--------------------------------------------------------------------------
Dock Station
-------------------------------------------------------------------------- */
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index be7de305a62201593fa69ea5d04d8f7b59196979..0bba8b8c350e760c2d41f3bbc01df123d0f670f8 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -12,7 +12,7 @@
/* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION 0x20200925
+#define ACPI_CA_VERSION 0x20201113
#include <acpi/acconfig.h>
#include <acpi/actypes.h>
diff --git a/include/acpi/acuuid.h b/include/acpi/acuuid.h
index 10e30a5030ee77fbd651bbb99798da664ac6df9b..fb7d8d1fd93c8b1c02983f5dfe82b6d55754ebf3 100644
--- a/include/acpi/acuuid.h
+++ b/include/acpi/acuuid.h
@@ -39,6 +39,7 @@
/* NVDIMM - NFIT table */
+#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
#define UUID_VOLATILE_MEMORY "7305944f-fdda-44e3-b16c-3f22d252e5d0"
#define UUID_PERSISTENT_MEMORY "66f0d379-b4f3-4074-ac43-0d3318b78cdb"
#define UUID_CONTROL_REGION "92f701f6-13b4-405d-910b-299367e8234c"
@@ -47,6 +48,10 @@
#define UUID_VOLATILE_VIRTUAL_CD "3d5abd30-4175-87ce-6d64-d2ade523c4bb"
#define UUID_PERSISTENT_VIRTUAL_DISK "5cea02c9-4d07-69d3-269f-4496fbe096f9"
#define UUID_PERSISTENT_VIRTUAL_CD "08018188-42cd-bb48-100f-5387d53ded3d"
+#define UUID_NFIT_DIMM_N_MSFT "1ee68b36-d4bd-4a1a-9a16-4f8e53d46e05"
+#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"
+#define UUID_NFIT_DIMM_N_HPE2 "5008664b-b758-41a0-a03c-27c2f2d04f7e"
+#define UUID_NFIT_DIMM_N_HYPERV "5746c5f2-a9a2-4264-ad0e-e4ddc9e09e80"
/* Processor Properties (ACPI 6.2) */
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index f9bf374f96336dd1d321ad71e58556b0d4b6b2a3..fe48b7840665a9fc5b6d4db3060e3d4e22d89094 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -10,9 +10,10 @@
#define _LINUX_IOPORT_H
#ifndef __ASSEMBLY__
+#include <linux/bits.h>
#include <linux/compiler.h>
+#include <linux/minmax.h>
#include <linux/types.h>
-#include <linux/bits.h>
/*
* Resources are tree-like, allowing
* nesting etc..
@@ -229,6 +230,31 @@ static inline bool resource_contains(struct resource *r1, struct resource *r2)
return r1->start <= r2->start && r1->end >= r2->end;
}
+/* True if any part of r1 overlaps r2 */
+static inline bool resource_overlaps(struct resource *r1, struct resource *r2)
+{
+ return r1->start <= r2->end && r1->end >= r2->start;
+}
+
+static inline bool
+resource_intersection(struct resource *r1, struct resource *r2, struct resource *r)
+{
+ if (!resource_overlaps(r1, r2))
+ return false;
+ r->start = max(r1->start, r2->start);
+ r->end = min(r1->end, r2->end);
+ return true;
+}
+
+static inline bool
+resource_union(struct resource *r1, struct resource *r2, struct resource *r)
+{
+ if (!resource_overlaps(r1, r2))
+ return false;
+ r->start = min(r1->start, r2->start);
+ r->end = max(r1->end, r2->end);
+ return true;
+}
/* Convenience shorthand with allocation */
#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0)
@@ -296,12 +322,6 @@ extern int
walk_iomem_res_desc(unsigned long desc, unsigned long flags, u64 start, u64 end,
void *arg, int (*func)(struct resource *, void *));
-/* True if any part of r1 overlaps r2 */
-static inline bool resource_overlaps(struct resource *r1, struct resource *r2)
-{
- return (r1->start <= r2->end && r1->end >= r2->start);
-}
-
struct resource *devm_request_free_mem_region(struct device *dev,
struct resource *base, unsigned long size);
struct resource *request_free_mem_region(struct resource *base,
diff --git a/kernel/Makefile b/kernel/Makefile
index 6c9f19911be03e526e29389811fda6247656a253..dddf51266719bfb8a90c70bc021de7eb3bd5ab33 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -122,6 +122,7 @@ obj-$(CONFIG_HAS_IOMEM) += iomem.o
obj-$(CONFIG_RSEQ) += rseq.o
obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o
+obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_kunit.o
obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o
CFLAGS_stackleak.o += $(DISABLE_STACKLEAK_PLUGIN)
diff --git a/kernel/resource.c b/kernel/resource.c
index 3ae2f56cc79defc5bdfa7f69f2736f89a2fcea0e..82df80417489b5a2b6fa0412e7bb2926d3dd848c 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -557,13 +557,13 @@ int region_intersects(resource_size_t start, size_t size, unsigned long flags,
}
read_unlock(&resource_lock);
- if (other == 0)
- return type ? REGION_INTERSECTS : REGION_DISJOINT;
+ if (type == 0)
+ return REGION_DISJOINT;
- if (type)
- return REGION_MIXED;
+ if (other == 0)
+ return REGION_INTERSECTS;
- return REGION_DISJOINT;
+ return REGION_MIXED;
}
EXPORT_SYMBOL_GPL(region_intersects);
diff --git a/kernel/resource_kunit.c b/kernel/resource_kunit.c
new file mode 100644
index 0000000000000000000000000000000000000000..58ab9f914602b9b1919d4817bf119e3aeead54bd
--- /dev/null
+++ b/kernel/resource_kunit.c
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test cases for API provided by resource.c and ioport.h
+ */
+
+#include <kunit/test.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#define R0_START 0x0000
+#define R0_END 0xffff
+#define R1_START 0x1234
+#define R1_END 0x2345
+#define R2_START 0x4567
+#define R2_END 0x5678
+#define R3_START 0x6789
+#define R3_END 0x789a
+#define R4_START 0x2000
+#define R4_END 0x7000
+
+static struct resource r0 = { .start = R0_START, .end = R0_END };
+static struct resource r1 = { .start = R1_START, .end = R1_END };
+static struct resource r2 = { .start = R2_START, .end = R2_END };
+static struct resource r3 = { .start = R3_START, .end = R3_END };
+static struct resource r4 = { .start = R4_START, .end = R4_END };
+
+struct result {
+ struct resource *r1;
+ struct resource *r2;
+ struct resource r;
+ bool ret;
+};
+
+static struct result results_for_union[] = {
+ {
+ .r1 = &r1, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true,
+ }, {
+ .r1 = &r3, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true,
+ }, {
+ .r1 = &r4, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r1, .ret = false,
+ }, {
+ .r1 = &r3, .r2 = &r1, .ret = false,
+ }, {
+ .r1 = &r4, .r2 = &r1, .r.start = R1_START, .r.end = R4_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r3, .ret = false,
+ }, {
+ .r1 = &r2, .r2 = &r4, .r.start = R4_START, .r.end = R4_END, .ret = true,
+ }, {
+ .r1 = &r3, .r2 = &r4, .r.start = R4_START, .r.end = R3_END, .ret = true,
+ },
+};
+
+static struct result results_for_intersection[] = {
+ {
+ .r1 = &r1, .r2 = &r0, .r.start = R1_START, .r.end = R1_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r0, .r.start = R2_START, .r.end = R2_END, .ret = true,
+ }, {
+ .r1 = &r3, .r2 = &r0, .r.start = R3_START, .r.end = R3_END, .ret = true,
+ }, {
+ .r1 = &r4, .r2 = &r0, .r.start = R4_START, .r.end = R4_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r1, .ret = false,
+ }, {
+ .r1 = &r3, .r2 = &r1, .ret = false,
+ }, {
+ .r1 = &r4, .r2 = &r1, .r.start = R4_START, .r.end = R1_END, .ret = true,
+ }, {
+ .r1 = &r2, .r2 = &r3, .ret = false,
+ }, {
+ .r1 = &r2, .r2 = &r4, .r.start = R2_START, .r.end = R2_END, .ret = true,
+ }, {
+ .r1 = &r3, .r2 = &r4, .r.start = R3_START, .r.end = R4_END, .ret = true,
+ },
+};
+
+static void resource_do_test(struct kunit *test, bool ret, struct resource *r,
+ bool exp_ret, struct resource *exp_r,
+ struct resource *r1, struct resource *r2)
+{
+ KUNIT_EXPECT_EQ_MSG(test, ret, exp_ret, "Resources %pR %pR", r1, r2);
+ KUNIT_EXPECT_EQ_MSG(test, r->start, exp_r->start, "Start elements are not equal");
+ KUNIT_EXPECT_EQ_MSG(test, r->end, exp_r->end, "End elements are not equal");
+}
+
+static void resource_do_union_test(struct kunit *test, struct result *r)
+{
+ struct resource result;
+ bool ret;
+
+ memset(&result, 0, sizeof(result));
+ ret = resource_union(r->r1, r->r2, &result);
+ resource_do_test(test, ret, &result, r->ret, &r->r, r->r1, r->r2);
+
+ memset(&result, 0, sizeof(result));
+ ret = resource_union(r->r2, r->r1, &result);
+ resource_do_test(test, ret, &result, r->ret, &r->r, r->r2, r->r1);
+}
+
+static void resource_test_union(struct kunit *test)
+{
+ struct result *r = results_for_union;
+ unsigned int i = 0;
+
+ do {
+ resource_do_union_test(test, &r[i]);
+ } while (++i < ARRAY_SIZE(results_for_union));
+}
+
+static void resource_do_intersection_test(struct kunit *test, struct result *r)
+{
+ struct resource result;
+ bool ret;
+
+ memset(&result, 0, sizeof(result));
+ ret = resource_intersection(r->r1, r->r2, &result);
+ resource_do_test(test, ret, &result, r->ret, &r->r, r->r1, r->r2);
+
+ memset(&result, 0, sizeof(result));
+ ret = resource_intersection(r->r2, r->r1, &result);
+ resource_do_test(test, ret, &result, r->ret, &r->r, r->r2, r->r1);
+}
+
+static void resource_test_intersection(struct kunit *test)
+{
+ struct result *r = results_for_intersection;
+ unsigned int i = 0;
+
+ do {
+ resource_do_intersection_test(test, &r[i]);
+ } while (++i < ARRAY_SIZE(results_for_intersection));
+}
+
+static struct kunit_case resource_test_cases[] = {
+ KUNIT_CASE(resource_test_union),
+ KUNIT_CASE(resource_test_intersection),
+ {}
+};
+
+static struct kunit_suite resource_test_suite = {
+ .name = "resource",
+ .test_cases = resource_test_cases,
+};
+kunit_test_suite(resource_test_suite);
+
+MODULE_LICENSE("GPL");
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8be18d0eb0bd6be16b96231bb68b5760517554ee..7c70521d2a228d0428a1944324a2b8ed4278f887 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2257,6 +2257,17 @@ config BITFIELD_KUNIT
If unsure, say N.
+config RESOURCE_KUNIT_TEST
+ tristate "KUnit test for resource API"
+ depends on KUNIT
+ help
+ This builds the resource API unit test.
+ Tests the logic of API provided by resource.c and ioport.h.
+ For more information on KUnit and unit tests in general please refer
+ to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
+
config SYSCTL_KUNIT_TEST
tristate "KUnit test for sysctl" if !KUNIT_ALL_TESTS
depends on KUNIT
diff --git a/sound/soc/intel/catpt/core.h b/sound/soc/intel/catpt/core.h
index 0f53a0d43254f356677b7477d8fbf8ebee7f60c1..a64a0a77dcb7733ab55f423e1de59f371ea49119 100644
--- a/sound/soc/intel/catpt/core.h
+++ b/sound/soc/intel/catpt/core.h
@@ -22,17 +22,6 @@ void catpt_sram_free(struct resource *sram);
struct resource *
catpt_request_region(struct resource *root, resource_size_t size);
-static inline bool catpt_resource_overlapping(struct resource *r1,
- struct resource *r2,
- struct resource *ret)
-{
- if (!resource_overlaps(r1, r2))
- return false;
- ret->start = max(r1->start, r2->start);
- ret->end = min(r1->end, r2->end);
- return true;
-}
-
struct catpt_ipc_msg {
union {
u32 header;
diff --git a/sound/soc/intel/catpt/loader.c b/sound/soc/intel/catpt/loader.c
index 40c22e4bb2635fda7087b0d2fdd97ffddccffdf2..ff7b8f0d34ac7d2958994e815f7a755b7c593e17 100644
--- a/sound/soc/intel/catpt/loader.c
+++ b/sound/soc/intel/catpt/loader.c
@@ -267,7 +267,7 @@ static int catpt_restore_fwimage(struct catpt_dev *cdev,
r2.start = off;
r2.end = r2.start + info->size - 1;
- if (!catpt_resource_overlapping(&r2, &r1, &common))
+ if (!resource_intersection(&r2, &r1, &common))
continue;
/* calculate start offset of common data area */
off = common.start - r1.start;