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ACPI updates for 6.9-rc1

Browse Source 
- Rearrange Device Check and Bus Check notification handling in the
    ACPI device hotplug code to make it get the "enabled" _STA bit into
    account (Rafael Wysocki).
 
  - Modify acpi_processor_add() to skip processors with the "enabled"
    _STA bit clear, as per the specification (Rafael Wysocki).
 
  - Stop failing Device Check notification handling without a valid
    reason (Rafael Wysocki).
 
  - Defer enumeration of devices that depend on a device with an ACPI
    device ID equalt to INTC10CF to address probe ordering issues on
    some platforms (Wentong Wu).
 
  - Constify acpi_bus_type (Ricardo Marliere).
 
  - Make the ACPI-specific suspend-to-idle code take the Low-Power S0
    Idle MSFT UUID into account on non-AMD systems (Rafael Wysocki).
 
  - Add ACPI IRQ override quirks for some new platforms (Sergey
    Kalinichev, Maxim Kudinov, Alexey Froloff, Sviatoslav Harasymchuk,
    Nicolas Haye).
 
  - Make the NFIT parsing code use acpi_evaluate_dsm_typed() (Andy
    Shevchenko).
 
  - Fix a memory leak in acpi_processor_power_exit() (Armin Wolf).
 
  - Make it possible to quirk the CSI-2 and MIPI DisCo for Imaging
    properties parsing and add a quirk for Dell XPS 9315 (Sakari Ailus).
 
  - Prevent false-positive static checker warnings from triggering by
    intializing some variables in the ACPI thermal code to zero (Colin
    Ian King).
 
  - Add DELL0501 handling to acpi_quirk_skip_serdev_enumeration() and
    make that function generic (Hans de Goede).
 
  - Make the ACPI backlight code handle fetching EDID that is longer than
    256 bytes (Mario Limonciello).
 
  - Skip initialization of GHES_ASSIST structures for Machine Check
    Architecture in APEI (Avadhut Naik).
 
  - Convert several plaform drivers in the ACPI subsystem to using a
    remove callback that returns void (Uwe Kleine-König).
 
  - Drop the long-deprecated custom_method debugfs interface that is
    problematic from the security standpoint (Rafael Wysocki).
 
  - Use %pe in a couple of places in the ACPI code for easier error
    decoding (Onkarnath).
 
  - Fix register width information handling during system memory
    accesses in the ACPI CPPC library (Jarred White).
 
  - Add AMD CPPC V2 support for family 17h processors to the ACPI CPPC
    library (Perry Yuan).
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Merge tag 'acpi-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These modify the ACPI device events and processor enumeration code to
  take the 'enabled' _STA bit into account as mandated by the ACPI
  specification, convert several platform drivers to using a remove
  callback that returns void, add some new quirks for ACPI IRQ override
  and other things, address assorted issues and clean up code.

  Specifics:

   - Rearrange Device Check and Bus Check notification handling in the
     ACPI device hotplug code to make it get the "enabled" _STA bit into
     account (Rafael Wysocki)

   - Modify acpi_processor_add() to skip processors with the "enabled"
     _STA bit clear, as per the specification (Rafael Wysocki)

   - Stop failing Device Check notification handling without a valid
     reason (Rafael Wysocki)

   - Defer enumeration of devices that depend on a device with an ACPI
     device ID equalt to INTC10CF to address probe ordering issues on
     some platforms (Wentong Wu)

   - Constify acpi_bus_type (Ricardo Marliere)

   - Make the ACPI-specific suspend-to-idle code take the Low-Power S0
     Idle MSFT UUID into account on non-AMD systems (Rafael Wysocki)

   - Add ACPI IRQ override quirks for some new platforms (Sergey
     Kalinichev, Maxim Kudinov, Alexey Froloff, Sviatoslav Harasymchuk,
     Nicolas Haye)

   - Make the NFIT parsing code use acpi_evaluate_dsm_typed() (Andy
     Shevchenko)

   - Fix a memory leak in acpi_processor_power_exit() (Armin Wolf)

   - Make it possible to quirk the CSI-2 and MIPI DisCo for Imaging
     properties parsing and add a quirk for Dell XPS 9315 (Sakari Ailus)

   - Prevent false-positive static checker warnings from triggering by
     intializing some variables in the ACPI thermal code to zero (Colin
     Ian King)

   - Add DELL0501 handling to acpi_quirk_skip_serdev_enumeration() and
     make that function generic (Hans de Goede)

   - Make the ACPI backlight code handle fetching EDID that is longer
     than 256 bytes (Mario Limonciello)

   - Skip initialization of GHES_ASSIST structures for Machine Check
     Architecture in APEI (Avadhut Naik)

   - Convert several plaform drivers in the ACPI subsystem to using a
     remove callback that returns void (Uwe Kleine-König)

   - Drop the long-deprecated custom_method debugfs interface that is
     problematic from the security standpoint (Rafael Wysocki)

   - Use %pe in a couple of places in the ACPI code for easier error
     decoding (Onkarnath)

   - Fix register width information handling during system memory
     accesses in the ACPI CPPC library (Jarred White)

   - Add AMD CPPC V2 support for family 17h processors to the ACPI CPPC
     library (Perry Yuan)"

* tag 'acpi-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (35 commits)
  ACPI: resource: Use IRQ override on Maibenben X565
  ACPI: CPPC: Use access_width over bit_width for system memory accesses
  ACPI: CPPC: enable AMD CPPC V2 support for family 17h processors
  ACPI: APEI: Skip initialization of GHES_ASSIST structures for Machine Check Architecture
  ACPI: scan: Consolidate Device Check and Bus Check notification handling
  ACPI: scan: Rework Device Check and Bus Check notification handling
  ACPI: scan: Make acpi_processor_add() check the device enabled bit
  ACPI: scan: Relocate acpi_bus_trim_one()
  ACPI: scan: Fix device check notification handling
  ACPI: resource: Add MAIBENBEN X577 to irq1_edge_low_force_override
  ACPI: pfr_update: Convert to platform remove callback returning void
  ACPI: pfr_telemetry: Convert to platform remove callback returning void
  ACPI: fan: Convert to platform remove callback returning void
  ACPI: GED: Convert to platform remove callback returning void
  ACPI: DPTF: Convert to platform remove callback returning void
  ACPI: AGDI: Convert to platform remove callback returning void
  ACPI: TAD: Convert to platform remove callback returning void
  ACPI: APEI: GHES: Convert to platform remove callback returning void
  ACPI: property: Polish ignoring bad data nodes
  ACPI: thermal_lib: Initialize temp_decik to zero
  ...
This commit is contained in:
Linus Torvalds 2024-03-13 11:54:05 -07:00
commit 9434467959
35 changed files with 418 additions and 385 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/firmware-guide/acpi/index.rst
View File

@ -14,7 +14,6 @@ ACPI Support
dsd/phy
enumeration
osi
method-customizing
method-tracing
DSD-properties-rules
debug

89
Documentation/firmware-guide/acpi/method-customizing.rst
View File

@ -1,89 +0,0 @@
.. SPDX-License-Identifier: GPL-2.0
=======================================
Linux ACPI Custom Control Method How To
=======================================
:Author: Zhang Rui <rui.zhang@intel.com>
Linux supports customizing ACPI control methods at runtime.
Users can use this to:
1. override an existing method which may not work correctly,
or just for debugging purposes.
2. insert a completely new method in order to create a missing
method such as _OFF, _ON, _STA, _INI, etc.
For these cases, it is far simpler to dynamically install a single
control method rather than override the entire DSDT, because kernel
rebuild/reboot is not needed and test result can be got in minutes.
.. note::
- Only ACPI METHOD can be overridden, any other object types like
"Device", "OperationRegion", are not recognized. Methods
declared inside scope operators are also not supported.
- The same ACPI control method can be overridden for many times,
and it's always the latest one that used by Linux/kernel.
- To get the ACPI debug object output (Store (AAAA, Debug)),
please run::
echo 1 > /sys/module/acpi/parameters/aml_debug_output
1. override an existing method
==============================
a) get the ACPI table via ACPI sysfs I/F. e.g. to get the DSDT,
just run "cat /sys/firmware/acpi/tables/DSDT > /tmp/dsdt.dat"
b) disassemble the table by running "iasl -d dsdt.dat".
c) rewrite the ASL code of the method and save it in a new file,
d) package the new file (psr.asl) to an ACPI table format.
Here is an example of a customized \_SB._AC._PSR method::
DefinitionBlock ("", "SSDT", 1, "", "", 0x20080715)
{
Method (\_SB_.AC._PSR, 0, NotSerialized)
{
Store ("In AC _PSR", Debug)
Return (ACON)
}
}
Note that the full pathname of the method in ACPI namespace
should be used.
e) assemble the file to generate the AML code of the method.
e.g. "iasl -vw 6084 psr.asl" (psr.aml is generated as a result)
If parameter "-vw 6084" is not supported by your iASL compiler,
please try a newer version.
f) mount debugfs by "mount -t debugfs none /sys/kernel/debug"
g) override the old method via the debugfs by running
"cat /tmp/psr.aml > /sys/kernel/debug/acpi/custom_method"
2. insert a new method
======================
This is easier than overriding an existing method.
We just need to create the ASL code of the method we want to
insert and then follow the step c) ~ g) in section 1.
3. undo your changes
====================
The "undo" operation is not supported for a new inserted method
right now, i.e. we can not remove a method currently.
For an overridden method, in order to undo your changes, please
save a copy of the method original ASL code in step c) section 1,
and redo step c) ~ g) to override the method with the original one.
.. note:: We can use a kernel with multiple custom ACPI method running,
But each individual write to debugfs can implement a SINGLE
method override. i.e. if we want to insert/override multiple
ACPI methods, we need to redo step c) ~ g) for multiple times.
.. note:: Be aware that root can mis-use this driver to modify arbitrary
memory and gain additional rights, if root's privileges got
restricted (for example if root is not allowed to load additional
modules after boot).

2
arch/x86/kernel/acpi/cppc.c
View File

@ -20,7 +20,7 @@ bool cpc_supported_by_cpu(void)
(boot_cpu_data.x86_model >= 0x20 && boot_cpu_data.x86_model <= 0x2f)))
return true;
else if (boot_cpu_data.x86 == 0x17 &&
boot_cpu_data.x86_model >= 0x70 && boot_cpu_data.x86_model <= 0x7f)
boot_cpu_data.x86_model >= 0x30 && boot_cpu_data.x86_model <= 0x7f)
return true;
return boot_cpu_has(X86_FEATURE_CPPC);
}

14
drivers/acpi/Kconfig
View File

@ -449,20 +449,6 @@ config ACPI_HED
which is used to report some hardware errors notified via
SCI, mainly the corrected errors.
config ACPI_CUSTOM_METHOD
tristate "Allow ACPI methods to be inserted/replaced at run time"
depends on DEBUG_FS
help
This debug facility allows ACPI AML methods to be inserted and/or
replaced without rebooting the system. For details refer to:
Documentation/firmware-guide/acpi/method-customizing.rst.
NOTE: This option is security sensitive, because it allows arbitrary
kernel memory to be written to by root (uid=0) users, allowing them
to bypass certain security measures (e.g. if root is not allowed to
load additional kernel modules after boot, this feature may be used
to override that restriction).
config ACPI_BGRT
bool "Boottime Graphics Resource Table support"
depends on EFI && (X86 || ARM64)

1
drivers/acpi/Makefile
View File

@ -101,7 +101,6 @@ obj-$(CONFIG_ACPI_SBS) += sbshc.o
obj-$(CONFIG_ACPI_SBS) += sbs.o
obj-$(CONFIG_ACPI_HED) += hed.o
obj-$(CONFIG_ACPI_EC_DEBUGFS) += ec_sys.o
obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o
obj-$(CONFIG_ACPI_BGRT) += bgrt.o
obj-$(CONFIG_ACPI_CPPC_LIB) += cppc_acpi.o
obj-$(CONFIG_ACPI_SPCR_TABLE) += spcr.o

5
drivers/acpi/acpi_processor.c
View File

@ -161,7 +161,7 @@ static void cpufreq_add_device(const char *name)
pdev = platform_device_register_simple(name, PLATFORM_DEVID_NONE, NULL, 0);
if (IS_ERR(pdev))
pr_info("%s device creation failed: %ld\n", name, PTR_ERR(pdev));
pr_info("%s device creation failed: %pe\n", name, pdev);
}
#ifdef CONFIG_X86
@ -381,6 +381,9 @@ static int acpi_processor_add(struct acpi_device *device,
struct device *dev;
int result = 0;
if (!acpi_device_is_enabled(device))
return -ENODEV;
pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
if (!pr)
return -ENOMEM;

5
drivers/acpi/acpi_tad.c
View File

@ -554,7 +554,7 @@ static int acpi_tad_disable_timer(struct device *dev, u32 timer_id)
return acpi_tad_wake_set(dev, "_STV", timer_id, ACPI_TAD_WAKE_DISABLED);
}
static int acpi_tad_remove(struct platform_device *pdev)
static void acpi_tad_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
acpi_handle handle = ACPI_HANDLE(dev);
@ -579,7 +579,6 @@ static int acpi_tad_remove(struct platform_device *pdev)
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
acpi_remove_cmos_rtc_space_handler(handle);
return 0;
}
static int acpi_tad_probe(struct platform_device *pdev)
@ -684,7 +683,7 @@ static struct platform_driver acpi_tad_driver = {
.acpi_match_table = acpi_tad_ids,
},
.probe = acpi_tad_probe,
.remove = acpi_tad_remove,
.remove_new = acpi_tad_remove,
};
MODULE_DEVICE_TABLE(acpi, acpi_tad_ids);

28
drivers/acpi/acpi_video.c
View File

@ -612,7 +612,7 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
static int
acpi_video_device_EDID(struct acpi_video_device *device,
union acpi_object **edid, ssize_t length)
union acpi_object **edid, int length)
{
int status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@ -625,13 +625,11 @@ acpi_video_device_EDID(struct acpi_video_device *device,
if (!device)
return -ENODEV;
if (length == 128)
arg0.integer.value = 1;
else if (length == 256)
arg0.integer.value = 2;
else
if (!length || (length % 128))
return -EINVAL;
arg0.integer.value = length / 128;
status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer);
if (ACPI_FAILURE(status))
return -ENODEV;
@ -641,7 +639,8 @@ acpi_video_device_EDID(struct acpi_video_device *device,
if (obj && obj->type == ACPI_TYPE_BUFFER)
*edid = obj;
else {
acpi_handle_info(device->dev->handle, "Invalid _DDC data\n");
acpi_handle_debug(device->dev->handle,
"Invalid _DDC data for length %d\n", length);
status = -EFAULT;
kfree(obj);
}
@ -1447,7 +1446,6 @@ int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
for (i = 0; i < video->attached_count; i++) {
video_device = video->attached_array[i].bind_info;
length = 256;
if (!video_device)
continue;
@ -1478,18 +1476,14 @@ int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
continue;
}
status = acpi_video_device_EDID(video_device, &buffer, length);
if (ACPI_FAILURE(status) || !buffer ||
buffer->type != ACPI_TYPE_BUFFER) {
length = 128;
for (length = 512; length > 0; length -= 128) {
status = acpi_video_device_EDID(video_device, &buffer,
length);
if (ACPI_FAILURE(status) || !buffer ||
buffer->type != ACPI_TYPE_BUFFER) {
continue;
}
if (ACPI_SUCCESS(status))
break;
}
if (!length)
continue;
*edid = buffer->buffer.pointer;
return length;

2
drivers/acpi/acpi_watchdog.c
View File

@ -179,7 +179,7 @@ void __init acpi_watchdog_init(void)
pdev = platform_device_register_simple("wdat_wdt", PLATFORM_DEVID_NONE,
resources, nresources);
if (IS_ERR(pdev))
pr_err("Device creation failed: %ld\n", PTR_ERR(pdev));
pr_err("Device creation failed: %pe\n", pdev);
kfree(resources);

17
drivers/acpi/apei/ghes.c
View File

@ -1455,7 +1455,7 @@ err:
return rc;
}
static int ghes_remove(struct platform_device *ghes_dev)
static void ghes_remove(struct platform_device *ghes_dev)
{
int rc;
struct ghes *ghes;
@ -1492,8 +1492,15 @@ static int ghes_remove(struct platform_device *ghes_dev)
break;
case ACPI_HEST_NOTIFY_SOFTWARE_DELEGATED:
rc = apei_sdei_unregister_ghes(ghes);
if (rc)
return rc;
if (rc) {
/*
* Returning early results in a resource leak, but we're
* only here if stopping the hardware failed.
*/
dev_err(&ghes_dev->dev, "Failed to unregister ghes (%pe)\n",
ERR_PTR(rc));
return;
}
break;
default:
BUG();
@ -1507,8 +1514,6 @@ static int ghes_remove(struct platform_device *ghes_dev)
mutex_unlock(&ghes_devs_mutex);
kfree(ghes);
return 0;
}
static struct platform_driver ghes_platform_driver = {
@ -1516,7 +1521,7 @@ static struct platform_driver ghes_platform_driver = {
.name = "GHES",
},
.probe = ghes_probe,
.remove = ghes_remove,
.remove_new = ghes_remove,
};
void __init acpi_ghes_init(void)

51
drivers/acpi/apei/hest.c
View File

@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hest_disable);
static struct acpi_table_hest *__read_mostly hest_tab;
/*
* Since GHES_ASSIST is not supported, skip initialization of GHES_ASSIST
* structures for MCA.
* During HEST parsing, detected MCA error sources are cached from early
* table entries so that the Flags and Source Id fields from these cached
* values are then referred to in later table entries to determine if the
* encountered GHES_ASSIST structure should be initialized.
*/
static struct {
struct acpi_hest_ia_corrected *cmc;
struct acpi_hest_ia_machine_check *mc;
struct acpi_hest_ia_deferred_check *dmc;
} mces;
static const int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = {
[ACPI_HEST_TYPE_IA32_CHECK] = -1, /* need further calculation */
[ACPI_HEST_TYPE_IA32_CORRECTED_CHECK] = -1,
@ -70,22 +84,54 @@ static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
len = sizeof(*cmc) + cmc->num_hardware_banks *
sizeof(struct acpi_hest_ia_error_bank);
mces.cmc = cmc;
} else if (hest_type == ACPI_HEST_TYPE_IA32_CHECK) {
struct acpi_hest_ia_machine_check *mc;
mc = (struct acpi_hest_ia_machine_check *)hest_hdr;
len = sizeof(*mc) + mc->num_hardware_banks *
sizeof(struct acpi_hest_ia_error_bank);
mces.mc = mc;
} else if (hest_type == ACPI_HEST_TYPE_IA32_DEFERRED_CHECK) {
struct acpi_hest_ia_deferred_check *mc;
mc = (struct acpi_hest_ia_deferred_check *)hest_hdr;
len = sizeof(*mc) + mc->num_hardware_banks *
sizeof(struct acpi_hest_ia_error_bank);
mces.dmc = mc;
}
BUG_ON(len == -1);
return len;
};
/*
* GHES and GHESv2 structures share the same format, starting from
* Source Id and ending in Error Status Block Length (inclusive).
*/
static bool is_ghes_assist_struct(struct acpi_hest_header *hest_hdr)
{
struct acpi_hest_generic *ghes;
u16 related_source_id;
if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR &&
hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR_V2)
return false;
ghes = (struct acpi_hest_generic *)hest_hdr;
related_source_id = ghes->related_source_id;
if (mces.cmc && mces.cmc->flags & ACPI_HEST_GHES_ASSIST &&
related_source_id == mces.cmc->header.source_id)
return true;
if (mces.mc && mces.mc->flags & ACPI_HEST_GHES_ASSIST &&
related_source_id == mces.mc->header.source_id)
return true;
if (mces.dmc && mces.dmc->flags & ACPI_HEST_GHES_ASSIST &&
related_source_id == mces.dmc->header.source_id)
return true;
return false;
}
typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
static int apei_hest_parse(apei_hest_func_t func, void *data)
@ -114,6 +160,11 @@ static int apei_hest_parse(apei_hest_func_t func, void *data)
return -EINVAL;
}
if (is_ghes_assist_struct(hest_hdr)) {
hest_hdr = (void *)hest_hdr + len;
continue;
}
rc = func(hest_hdr, data);
if (rc)
return rc;

8
drivers/acpi/arm64/agdi.c
View File

@ -58,7 +58,7 @@ static int agdi_probe(struct platform_device *pdev)
return agdi_sdei_probe(pdev, adata);
}
static int agdi_remove(struct platform_device *pdev)
static void agdi_remove(struct platform_device *pdev)
{
struct agdi_data *adata = dev_get_platdata(&pdev->dev);
int err, i;
@ -67,7 +67,7 @@ static int agdi_remove(struct platform_device *pdev)
if (err) {
dev_err(&pdev->dev, "Failed to disable sdei-event #%d (%pe)\n",
adata->sdei_event, ERR_PTR(err));
return 0;
return;
}
for (i = 0; i < 3; i++) {
@ -81,8 +81,6 @@ static int agdi_remove(struct platform_device *pdev)
if (err)
dev_err(&pdev->dev, "Failed to unregister sdei-event #%d (%pe)\n",
adata->sdei_event, ERR_PTR(err));
return 0;
}
static struct platform_driver agdi_driver = {
@ -90,7 +88,7 @@ static struct platform_driver agdi_driver = {
.name = "agdi",
},
.probe = agdi_probe,
.remove = agdi_remove,
.remove_new = agdi_remove,
};
void __init acpi_agdi_init(void)

2
drivers/acpi/bus.c
View File

@ -1097,7 +1097,7 @@ static void acpi_device_remove(struct device *dev)
put_device(dev);
}
struct bus_type acpi_bus_type = {
const struct bus_type acpi_bus_type = {
.name = "acpi",
.match = acpi_bus_match,
.probe = acpi_device_probe,

31
drivers/acpi/cppc_acpi.c
View File

@ -166,6 +166,13 @@ show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_freq);
show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, reference_perf);
show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, wraparound_time);
/* Check for valid access_width, otherwise, fallback to using bit_width */
#define GET_BIT_WIDTH(reg) ((reg)->access_width ? (8 << ((reg)->access_width - 1)) : (reg)->bit_width)
/* Shift and apply the mask for CPC reads/writes */
#define MASK_VAL(reg, val) ((val) >> ((reg)->bit_offset & \
GENMASK(((reg)->bit_width), 0)))
static ssize_t show_feedback_ctrs(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@ -780,6 +787,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
} else if (gas_t->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
if (gas_t->address) {
void __iomem *addr;
size_t access_width;
if (!osc_cpc_flexible_adr_space_confirmed) {
pr_debug("Flexible address space capability not supported\n");
@ -787,7 +795,8 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
goto out_free;
}
addr = ioremap(gas_t->address, gas_t->bit_width/8);
access_width = GET_BIT_WIDTH(gas_t) / 8;
addr = ioremap(gas_t->address, access_width);
if (!addr)
goto out_free;
cpc_ptr->cpc_regs[i-2].sys_mem_vaddr = addr;
@ -983,6 +992,7 @@ int __weak cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val)
static int cpc_read(int cpu, struct cpc_register_resource *reg_res, u64 *val)
{
void __iomem *vaddr = NULL;
int size;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cpc_reg *reg = &reg_res->cpc_entry.reg;
@ -994,7 +1004,7 @@ static int cpc_read(int cpu, struct cpc_register_resource *reg_res, u64 *val)
*val = 0;
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
u32 width = 8 << (reg->access_width - 1);
u32 width = GET_BIT_WIDTH(reg);
u32 val_u32;
acpi_status status;
@ -1018,7 +1028,9 @@ static int cpc_read(int cpu, struct cpc_register_resource *reg_res, u64 *val)
return acpi_os_read_memory((acpi_physical_address)reg->address,
val, reg->bit_width);
switch (reg->bit_width) {
size = GET_BIT_WIDTH(reg);
switch (size) {
case 8:
*val = readb_relaxed(vaddr);
break;
@ -1037,18 +1049,22 @@ static int cpc_read(int cpu, struct cpc_register_resource *reg_res, u64 *val)
return -EFAULT;
}
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
*val = MASK_VAL(reg, *val);
return 0;
}
static int cpc_write(int cpu, struct cpc_register_resource *reg_res, u64 val)
{
int ret_val = 0;
int size;
void __iomem *vaddr = NULL;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cpc_reg *reg = &reg_res->cpc_entry.reg;
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
u32 width = 8 << (reg->access_width - 1);
u32 width = GET_BIT_WIDTH(reg);
acpi_status status;
status = acpi_os_write_port((acpi_io_address)reg->address,
@ -1070,7 +1086,12 @@ static int cpc_write(int cpu, struct cpc_register_resource *reg_res, u64 val)
return acpi_os_write_memory((acpi_physical_address)reg->address,
val, reg->bit_width);
switch (reg->bit_width) {
size = GET_BIT_WIDTH(reg);
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
val = MASK_VAL(reg, val);
switch (size) {
case 8:
writeb_relaxed(val, vaddr);
break;

103
drivers/acpi/custom_method.c
View File

@ -1,103 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* custom_method.c - debugfs interface for customizing ACPI control method
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/uaccess.h>
#include <linux/debugfs.h>
#include <linux/acpi.h>
#include <linux/security.h>
#include "internal.h"
MODULE_LICENSE("GPL");
static struct dentry *cm_dentry;
/* /sys/kernel/debug/acpi/custom_method */
static ssize_t cm_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
static char *buf;
static u32 max_size;
static u32 uncopied_bytes;
struct acpi_table_header table;
acpi_status status;
int ret;
ret = security_locked_down(LOCKDOWN_ACPI_TABLES);
if (ret)
return ret;
if (!(*ppos)) {
/* parse the table header to get the table length */
if (count <= sizeof(struct acpi_table_header))
return -EINVAL;
if (copy_from_user(&table, user_buf,
sizeof(struct acpi_table_header)))
return -EFAULT;
uncopied_bytes = max_size = table.length;
/* make sure the buf is not allocated */
kfree(buf);
buf = kzalloc(max_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
}
if (buf == NULL)
return -EINVAL;
if ((*ppos > max_size) ||
(*ppos + count > max_size) ||
(*ppos + count < count) ||
(count > uncopied_bytes)) {
kfree(buf);
buf = NULL;
return -EINVAL;
}
if (copy_from_user(buf + (*ppos), user_buf, count)) {
kfree(buf);
buf = NULL;
return -EFAULT;
}
uncopied_bytes -= count;
*ppos += count;
if (!uncopied_bytes) {
status = acpi_install_method(buf);
kfree(buf);
buf = NULL;
if (ACPI_FAILURE(status))
return -EINVAL;
add_taint(TAINT_OVERRIDDEN_ACPI_TABLE, LOCKDEP_NOW_UNRELIABLE);
}
return count;
}
static const struct file_operations cm_fops = {
.write = cm_write,
.llseek = default_llseek,
};
static int __init acpi_custom_method_init(void)
{
cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
acpi_debugfs_dir, NULL, &cm_fops);
return 0;
}
static void __exit acpi_custom_method_exit(void)
{
debugfs_remove(cm_dentry);
}
module_init(acpi_custom_method_init);
module_exit(acpi_custom_method_exit);

6
drivers/acpi/dptf/dptf_pch_fivr.c
View File

@ -141,11 +141,9 @@ static int pch_fivr_add(struct platform_device *pdev)
return 0;
}
static int pch_fivr_remove(struct platform_device *pdev)
static void pch_fivr_remove(struct platform_device *pdev)
{
sysfs_remove_group(&pdev->dev.kobj, &pch_fivr_attribute_group);
return 0;
}
static const struct acpi_device_id pch_fivr_device_ids[] = {
@ -159,7 +157,7 @@ MODULE_DEVICE_TABLE(acpi, pch_fivr_device_ids);
static struct platform_driver pch_fivr_driver = {
.probe = pch_fivr_add,
.remove = pch_fivr_remove,
.remove_new = pch_fivr_remove,
.driver = {
.name = "dptf_pch_fivr",
.acpi_match_table = pch_fivr_device_ids,

6
drivers/acpi/dptf/dptf_power.c
View File

@ -209,7 +209,7 @@ static int dptf_power_add(struct platform_device *pdev)
return 0;
}
static int dptf_power_remove(struct platform_device *pdev)
static void dptf_power_remove(struct platform_device *pdev)
{
struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
@ -221,8 +221,6 @@ static int dptf_power_remove(struct platform_device *pdev)
sysfs_remove_group(&pdev->dev.kobj, &dptf_battery_attribute_group);
else
sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
return 0;
}
static const struct acpi_device_id int3407_device_ids[] = {
@ -242,7 +240,7 @@ MODULE_DEVICE_TABLE(acpi, int3407_device_ids);
static struct platform_driver dptf_power_driver = {
.probe = dptf_power_add,
.remove = dptf_power_remove,
.remove_new = dptf_power_remove,
.driver = {
.name = "dptf_power",
.acpi_match_table = int3407_device_ids,

5
drivers/acpi/evged.c
View File

@ -173,10 +173,9 @@ static void ged_shutdown(struct platform_device *pdev)
}
}
static int ged_remove(struct platform_device *pdev)
static void ged_remove(struct platform_device *pdev)
{
ged_shutdown(pdev);
return 0;
}
static const struct acpi_device_id ged_acpi_ids[] = {
@ -186,7 +185,7 @@ static const struct acpi_device_id ged_acpi_ids[] = {
static struct platform_driver ged_driver = {
.probe = ged_probe,
.remove = ged_remove,
.remove_new = ged_remove,
.shutdown = ged_shutdown,
.driver = {
.name = MODULE_NAME,

6
drivers/acpi/fan_core.c
View File

@ -387,7 +387,7 @@ err_end:
return result;
}
static int acpi_fan_remove(struct platform_device *pdev)
static void acpi_fan_remove(struct platform_device *pdev)
{
struct acpi_fan *fan = platform_get_drvdata(pdev);
@ -399,8 +399,6 @@ static int acpi_fan_remove(struct platform_device *pdev)
sysfs_remove_link(&pdev->dev.kobj, "thermal_cooling");
sysfs_remove_link(&fan->cdev->device.kobj, "device");
thermal_cooling_device_unregister(fan->cdev);
return 0;
}
#ifdef CONFIG_PM_SLEEP
@ -446,7 +444,7 @@ static const struct dev_pm_ops acpi_fan_pm = {
static struct platform_driver acpi_fan_driver = {
.probe = acpi_fan_probe,
.remove = acpi_fan_remove,
.remove_new = acpi_fan_remove,
.driver = {
.name = "acpi-fan",
.acpi_match_table = fan_device_ids,

2
drivers/acpi/internal.h
View File

@ -121,6 +121,7 @@ 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);
void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
bool acpi_device_is_enabled(const struct acpi_device *adev);
bool acpi_device_is_present(const struct acpi_device *adev);
bool acpi_device_is_battery(struct acpi_device *adev);
bool acpi_device_is_first_physical_node(struct acpi_device *adev,
@ -301,5 +302,6 @@ void acpi_mipi_check_crs_csi2(acpi_handle handle);
void acpi_mipi_scan_crs_csi2(void);
void acpi_mipi_init_crs_csi2_swnodes(void);
void acpi_mipi_crs_csi2_cleanup(void);
bool acpi_graph_ignore_port(acpi_handle handle);
#endif /* _ACPI_INTERNAL_H_ */

71
drivers/acpi/mipi-disco-img.c
View File

@ -19,6 +19,7 @@
*/
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/limits.h>
#include <linux/list.h>
#include <linux/module.h>
@ -723,3 +724,73 @@ void acpi_mipi_crs_csi2_cleanup(void)
list_for_each_entry_safe(csi2, csi2_tmp, &acpi_mipi_crs_csi2_list, entry)
acpi_mipi_del_crs_csi2(csi2);
}
static const struct dmi_system_id dmi_ignore_port_nodes[] = {
{
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "XPS 9315"),
},
},
{ }
};
static const char *strnext(const char *s1, const char *s2)
{
s1 = strstr(s1, s2);
if (!s1)
return NULL;
return s1 + strlen(s2);
}
/**
* acpi_graph_ignore_port - Tell whether a port node should be ignored
* @handle: The ACPI handle of the node (which may be a port node)
*
* Return: true if a port node should be ignored and the data to that should
* come from other sources instead (Windows ACPI definitions and
* ipu-bridge). This is currently used to ignore bad port nodes related to IPU6
* ("IPU?") and camera sensor devices ("LNK?") in certain Dell systems with
* Intel VSC.
*/
bool acpi_graph_ignore_port(acpi_handle handle)
{
const char *path = NULL, *orig_path;
static bool dmi_tested, ignore_port;
if (!dmi_tested) {
ignore_port = dmi_first_match(dmi_ignore_port_nodes);
dmi_tested = true;
}
if (!ignore_port)
return false;
/* Check if the device is either "IPU" or "LNK" (sensor). */
orig_path = acpi_handle_path(handle);
if (!orig_path)
return false;
path = strnext(orig_path, "IPU");
if (!path)
path = strnext(orig_path, "LNK");
if (!path)
goto out_free;
if (!(isdigit(path[0]) && path[1] == '.'))
goto out_free;
/* Check if the node has a "PRT" prefix. */
path = strnext(path, "PRT");
if (path && isdigit(path[0]) && !path[1]) {
acpi_handle_debug(handle, "ignoring data node\n");
kfree(orig_path);
return true;
}
out_free:
kfree(orig_path);
return false;
}

5
drivers/acpi/nfit/core.c
View File

@ -1737,9 +1737,8 @@ __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem)
if ((nfit_mem->dsm_mask & (1 << func)) == 0)
return;
out_obj = acpi_evaluate_dsm(handle, guid, revid, func, &in_obj);
if (!out_obj || out_obj->type != ACPI_TYPE_BUFFER
|| out_obj->buffer.length < sizeof(smart)) {
out_obj = acpi_evaluate_dsm_typed(handle, guid, revid, func, &in_obj, ACPI_TYPE_BUFFER);
if (!out_obj || out_obj->buffer.length < sizeof(smart)) {
dev_dbg(dev->parent, "%s: failed to retrieve initial health\n",
dev_name(dev));
ACPI_FREE(out_obj);

2
drivers/acpi/pci_slot.c
View File

@ -111,7 +111,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
snprintf(name, sizeof(name), "%llu", sun);
pci_slot = pci_create_slot(pci_bus, device, name, NULL);
if (IS_ERR(pci_slot)) {
pr_err("pci_create_slot returned %ld\n", PTR_ERR(pci_slot));
pr_err("pci_create_slot returned %pe\n", pci_slot);
kfree(slot);
return AE_OK;
}

6
drivers/acpi/pfr_telemetry.c
View File

@ -347,13 +347,11 @@ static const struct file_operations acpi_pfrt_log_fops = {
.llseek = noop_llseek,
};
static int acpi_pfrt_log_remove(struct platform_device *pdev)
static void acpi_pfrt_log_remove(struct platform_device *pdev)
{
struct pfrt_log_device *pfrt_log_dev = platform_get_drvdata(pdev);
misc_deregister(&pfrt_log_dev->miscdev);
return 0;
}
static void pfrt_log_put_idx(void *data)
@ -427,7 +425,7 @@ static struct platform_driver acpi_pfrt_log_driver = {
.acpi_match_table = acpi_pfrt_log_ids,
},
.probe = acpi_pfrt_log_probe,
.remove = acpi_pfrt_log_remove,
.remove_new = acpi_pfrt_log_remove,
};
module_platform_driver(acpi_pfrt_log_driver);

6
drivers/acpi/pfr_update.c
View File

@ -489,13 +489,11 @@ static const struct file_operations acpi_pfru_fops = {
.llseek = noop_llseek,
};
static int acpi_pfru_remove(struct platform_device *pdev)
static void acpi_pfru_remove(struct platform_device *pdev)
{
struct pfru_device *pfru_dev = platform_get_drvdata(pdev);
misc_deregister(&pfru_dev->miscdev);
return 0;
}
static void pfru_put_idx(void *data)
@ -567,7 +565,7 @@ static struct platform_driver acpi_pfru_driver = {
.acpi_match_table = acpi_pfru_ids,
},
.probe = acpi_pfru_probe,
.remove = acpi_pfru_remove,
.remove_new = acpi_pfru_remove,
};
module_platform_driver(acpi_pfru_driver);

2
drivers/acpi/processor_idle.c
View File

@ -1430,6 +1430,8 @@ int acpi_processor_power_exit(struct acpi_processor *pr)
acpi_processor_registered--;
if (acpi_processor_registered == 0)
cpuidle_unregister_driver(&acpi_idle_driver);
kfree(dev);
}
pr->flags.power_setup_done = 0;

3
drivers/acpi/property.c
View File

@ -80,6 +80,9 @@ static bool acpi_nondev_subnode_extract(union acpi_object *desc,
struct acpi_data_node *dn;
bool result;
if (acpi_graph_ignore_port(handle))
return false;
dn = kzalloc(sizeof(*dn), GFP_KERNEL);
if (!dn)
return false;

42
drivers/acpi/resource.c
View File

@ -468,6 +468,13 @@ static const struct dmi_system_id irq1_level_low_skip_override[] = {
DMI_MATCH(DMI_BOARD_NAME, "B1502CGA"),
},
},
{
/* Asus ExpertBook B1502CVA */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_BOARD_NAME, "B1502CVA"),
},
},
{
/* Asus ExpertBook B2402CBA */
.matches = {
@ -489,6 +496,13 @@ static const struct dmi_system_id irq1_level_low_skip_override[] = {
DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"),
},
},
{
/* Asus ExpertBook B2502FBA */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_BOARD_NAME, "B2502FBA"),
},
},
{
/* Asus Vivobook E1504GA */
.matches = {
@ -588,6 +602,34 @@ static const struct dmi_system_id irq1_edge_low_force_override[] = {
DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"),
},
},
{
/* Lunnen Ground 15 / AMD Ryzen 5 5500U */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"),
},
},
{
/* Lunnen Ground 16 / AMD Ryzen 7 5800U */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
DMI_MATCH(DMI_BOARD_NAME, "LL6FA"),
},
},
{
/* MAIBENBEN X577 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
DMI_MATCH(DMI_BOARD_NAME, "X577"),
},
},
{
/* Maibenben X565 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
DMI_MATCH(DMI_BOARD_NAME, "X565"),
},
},
{ }
};

172
drivers/acpi/scan.c
View File

@ -244,6 +244,53 @@ static int acpi_scan_try_to_offline(struct acpi_device *device)
return 0;
}
static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check)
{
struct acpi_scan_handler *handler = adev->handler;
acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check);
if (check) {
acpi_bus_get_status(adev);
/*
* Skip devices that are still there and take the enabled
* flag into account.
*/
if (acpi_device_is_enabled(adev))
return 0;
/* Skip device that have not been enumerated. */
if (!acpi_device_enumerated(adev)) {
dev_dbg(&adev->dev, "Still not enumerated\n");
return 0;
}
}
adev->flags.match_driver = false;
if (handler) {
if (handler->detach)
handler->detach(adev);
adev->handler = NULL;
} else {
device_release_driver(&adev->dev);
}
/*
* Most likely, the device is going away, so put it into D3cold before
* that.
*/
acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
adev->flags.initialized = false;
acpi_device_clear_enumerated(adev);
return 0;
}
static void acpi_scan_check_subtree(struct acpi_device *adev)
{
acpi_scan_check_and_detach(adev, (void *)true);
}
static int acpi_scan_hot_remove(struct acpi_device *device)
{
acpi_handle handle = device->handle;
@ -289,75 +336,62 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
return 0;
}
static int acpi_scan_device_not_enumerated(struct acpi_device *adev)
static int acpi_scan_rescan_bus(struct acpi_device *adev)
{
if (!acpi_device_enumerated(adev)) {
dev_warn(&adev->dev, "Still not enumerated\n");
return -EALREADY;
}
acpi_bus_trim(adev);
return 0;
struct acpi_scan_handler *handler = adev->handler;
int ret;
if (handler && handler->hotplug.scan_dependent)
ret = handler->hotplug.scan_dependent(adev);
else
ret = acpi_bus_scan(adev->handle);
if (ret)
dev_info(&adev->dev, "Namespace scan failure\n");
return ret;
}
static int acpi_scan_device_check(struct acpi_device *adev)
{
int error;
struct acpi_device *parent;
acpi_bus_get_status(adev);
if (acpi_device_is_present(adev)) {
/*
* This function is only called for device objects for which
* matching scan handlers exist. The only situation in which
* the scan handler is not attached to this device object yet
* is when the device has just appeared (either it wasn't
* present at all before or it was removed and then added
* again).
*/
if (adev->handler) {
dev_warn(&adev->dev, "Already enumerated\n");
return -EALREADY;
}
error = acpi_bus_scan(adev->handle);
if (error) {
dev_warn(&adev->dev, "Namespace scan failure\n");
return error;
}
if (!adev->handler) {
dev_warn(&adev->dev, "Enumeration failure\n");
error = -ENODEV;
}
} else {
error = acpi_scan_device_not_enumerated(adev);
}
return error;
}
acpi_scan_check_subtree(adev);
static int acpi_scan_bus_check(struct acpi_device *adev, void *not_used)
{
struct acpi_scan_handler *handler = adev->handler;
int error;
if (!acpi_device_is_present(adev))
return 0;
acpi_bus_get_status(adev);
if (!acpi_device_is_present(adev)) {
acpi_scan_device_not_enumerated(adev);
/*
* This function is only called for device objects for which matching
* scan handlers exist. The only situation in which the scan handler
* is not attached to this device object yet is when the device has
* just appeared (either it wasn't present at all before or it was
* removed and then added again).
*/
if (adev->handler) {
dev_dbg(&adev->dev, "Already enumerated\n");
return 0;
}
if (handler && handler->hotplug.scan_dependent)
return handler->hotplug.scan_dependent(adev);
error = acpi_bus_scan(adev->handle);
if (error) {
dev_warn(&adev->dev, "Namespace scan failure\n");
return error;
}
return acpi_dev_for_each_child(adev, acpi_scan_bus_check, NULL);
parent = acpi_dev_parent(adev);
if (!parent)
parent = adev;
return acpi_scan_rescan_bus(parent);
}
static int acpi_scan_bus_check(struct acpi_device *adev)
{
acpi_scan_check_subtree(adev);
return acpi_scan_rescan_bus(adev);
}
static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type)
{
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
return acpi_scan_bus_check(adev, NULL);
return acpi_scan_bus_check(adev);
case ACPI_NOTIFY_DEVICE_CHECK:
return acpi_scan_device_check(adev);
case ACPI_NOTIFY_EJECT_REQUEST:
@ -798,6 +832,7 @@ static const char * const acpi_honor_dep_ids[] = {
"INTC1059", /* IVSC (TGL) driver must be loaded to allow i2c access to camera sensors */
"INTC1095", /* IVSC (ADL) driver must be loaded to allow i2c access to camera sensors */
"INTC100A", /* IVSC (RPL) driver must be loaded to allow i2c access to camera sensors */
"INTC10CF", /* IVSC (MTL) driver must be loaded to allow i2c access to camera sensors */
NULL
};
@ -1922,6 +1957,11 @@ bool acpi_device_is_present(const struct acpi_device *adev)
return adev->status.present || adev->status.functional;
}
bool acpi_device_is_enabled(const struct acpi_device *adev)
{
return adev->status.present && adev->status.enabled;
}
static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
const char *idstr,
const struct acpi_device_id **matchid)
@ -2550,32 +2590,6 @@ int acpi_bus_scan(acpi_handle handle)
}
EXPORT_SYMBOL(acpi_bus_scan);
static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
{
struct acpi_scan_handler *handler = adev->handler;
acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL);
adev->flags.match_driver = false;
if (handler) {
if (handler->detach)
handler->detach(adev);
adev->handler = NULL;
} else {
device_release_driver(&adev->dev);
}
/*
* Most likely, the device is going away, so put it into D3cold before
* that.
*/
acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
adev->flags.initialized = false;
acpi_device_clear_enumerated(adev);
return 0;
}
/**
* acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects.
* @adev: Root of the ACPI namespace scope to walk.
@ -2584,7 +2598,7 @@ static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
*/
void acpi_bus_trim(struct acpi_device *adev)
{
acpi_bus_trim_one(adev, NULL);
acpi_scan_check_and_detach(adev, NULL);
}
EXPORT_SYMBOL_GPL(acpi_bus_trim);

8
drivers/acpi/thermal_lib.c
View File

@ -100,7 +100,7 @@ static int thermal_temp(int error, int temp_decik, int *ret_temp)
*/
int thermal_acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp)
{
int temp_decik;
int temp_decik = 0;
int ret = acpi_active_trip_temp(adev, id, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@ -119,7 +119,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_active_trip_temp);
*/
int thermal_acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp)
{
int temp_decik;
int temp_decik = 0;
int ret = acpi_passive_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@ -139,7 +139,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_passive_trip_temp);
*/
int thermal_acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp)
{
int temp_decik;
int temp_decik = 0;
int ret = acpi_hot_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@ -158,7 +158,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_hot_trip_temp);
*/
int thermal_acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp)
{
int temp_decik;
int temp_decik = 0;
int ret = acpi_critical_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);

2
drivers/acpi/utils.c
View File

@ -559,7 +559,7 @@ EXPORT_SYMBOL(acpi_evaluate_ost);
*
* Caller must free the returned buffer
*/
static char *acpi_handle_path(acpi_handle handle)
char *acpi_handle_path(acpi_handle handle)
{
struct acpi_buffer buffer = {
.length = ACPI_ALLOCATE_BUFFER,

37
drivers/acpi/x86/s2idle.c
View File

@ -488,7 +488,21 @@ static int lps0_device_attach(struct acpi_device *adev,
rev_id = 1;
lps0_dsm_func_mask = validate_dsm(adev->handle,
ACPI_LPS0_DSM_UUID, rev_id, &lps0_dsm_guid);
lps0_dsm_func_mask_microsoft = -EINVAL;
if (lps0_dsm_func_mask > 0 && lps0_dsm_func_mask_microsoft > 0) {
unsigned int func_mask;
/*
* Avoid evaluating the same _DSM function for two
* different UUIDs and prioritize the MSFT one.
*/
func_mask = lps0_dsm_func_mask & lps0_dsm_func_mask_microsoft;
if (func_mask) {
acpi_handle_info(adev->handle,
"Duplicate LPS0 _DSM functions (mask: 0x%x)\n",
func_mask);
lps0_dsm_func_mask &= ~func_mask;
}
}
}
if (lps0_dsm_func_mask < 0 && lps0_dsm_func_mask_microsoft < 0)
@ -549,19 +563,22 @@ int acpi_s2idle_prepare_late(void)
lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
/* LPS0 entry */
if (lps0_dsm_func_mask > 0)
acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
ACPI_LPS0_ENTRY_AMD :
ACPI_LPS0_ENTRY,
if (lps0_dsm_func_mask > 0 && acpi_s2idle_vendor_amd())
acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY_AMD,
lps0_dsm_func_mask, lps0_dsm_guid);
if (lps0_dsm_func_mask_microsoft > 0) {
/* modern standby entry */
/* Modern Standby entry */
acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY,
lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY,
lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
}
if (lps0_dsm_func_mask > 0 && !acpi_s2idle_vendor_amd())
acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY,
lps0_dsm_func_mask, lps0_dsm_guid);
list_for_each_entry(handler, &lps0_s2idle_devops_head, list_node) {
if (handler->prepare)
handler->prepare();
@ -600,14 +617,14 @@ void acpi_s2idle_restore_early(void)
ACPI_LPS0_EXIT_AMD :
ACPI_LPS0_EXIT,
lps0_dsm_func_mask, lps0_dsm_guid);
if (lps0_dsm_func_mask_microsoft > 0)
if (lps0_dsm_func_mask_microsoft > 0) {
acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT,
lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
/* Modern standby exit */
if (lps0_dsm_func_mask_microsoft > 0)
/* Modern Standby exit */
acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_EXIT,
lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
}
/* Screen on */
if (lps0_dsm_func_mask_microsoft > 0)

38
drivers/acpi/x86/utils.c
View File

@ -428,7 +428,7 @@ bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
}
EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
{
struct acpi_device *adev = ACPI_COMPANION(controller_parent);
const struct dmi_system_id *dmi_id;
@ -436,8 +436,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
u64 uid;
int ret;
*skip = false;
ret = acpi_dev_uid_to_integer(adev, &uid);
if (ret)
return 0;
@ -463,7 +461,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
return 0;
}
EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
bool acpi_quirk_skip_gpio_event_handlers(void)
{
@ -478,8 +475,41 @@ bool acpi_quirk_skip_gpio_event_handlers(void)
return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
}
EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
#else
static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
{
return 0;
}
#endif
int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
{
struct acpi_device *adev = ACPI_COMPANION(controller_parent);
*skip = false;
/*
* The DELL0501 ACPI HID represents an UART (CID is set to PNP0501) with
* a backlight-controller attached. There is no separate ACPI device with
* an UartSerialBusV2() resource to model the backlight-controller.
* Set skip to true so that the tty core creates a serdev ctrl device.
* The backlight driver will manually create the serdev client device.
*/
if (acpi_dev_hid_match(adev, "DELL0501")) {
*skip = true;
/*
* Create a platform dev for dell-uart-backlight to bind to.
* This is a static device, so no need to store the result.
*/
platform_device_register_simple("dell-uart-backlight", PLATFORM_DEVID_NONE,
NULL, 0);
return 0;
}
return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
}
EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
static const struct {
const char *hid;

24
include/acpi/acpi_bus.h
View File

@ -582,7 +582,7 @@ void acpi_initialize_hp_context(struct acpi_device *adev,
void (*uevent)(struct acpi_device *, u32));
/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;
extern const struct bus_type acpi_bus_type;
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
int acpi_dev_for_each_child(struct acpi_device *adev,
@ -749,6 +749,7 @@ bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *s
bool acpi_quirk_skip_acpi_ac_and_battery(void);
int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
#else
static inline bool acpi_device_override_status(struct acpi_device *adev,
unsigned long long *status)
@ -766,23 +767,22 @@ static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
{
}
#endif
#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
bool acpi_quirk_skip_gpio_event_handlers(void);
#else
static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
{
return false;
}
static inline int
acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
{
*skip = false;
return 0;
}
#endif
#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
bool acpi_quirk_skip_gpio_event_handlers(void);
#else
static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
{
return false;
}
static inline bool acpi_quirk_skip_gpio_event_handlers(void)
{
return false;

1
include/linux/acpi.h
View File

@ -1170,6 +1170,7 @@ static inline void acpi_ec_set_gpe_wake_mask(u8 action) {}
#endif
#ifdef CONFIG_ACPI
char *acpi_handle_path(acpi_handle handle);
__printf(3, 4)
void acpi_handle_printk(const char *level, acpi_handle handle,
const char *fmt, ...);