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-rw-r--r--drivers/acpi/acpi_mrrm.c43
-rw-r--r--drivers/acpi/apei/einj-core.c64
-rw-r--r--drivers/acpi/arm64/gtdt.c4
-rw-r--r--drivers/acpi/cppc_acpi.c8
-rw-r--r--drivers/acpi/numa/hmat.c46
-rw-r--r--drivers/acpi/numa/srat.c2
-rw-r--r--drivers/acpi/processor_driver.c6
-rw-r--r--drivers/acpi/processor_idle.c115
-rw-r--r--drivers/acpi/sbs.c2
9 files changed, 155 insertions, 135 deletions
diff --git a/drivers/acpi/acpi_mrrm.c b/drivers/acpi/acpi_mrrm.c
index a6dbf623e557..6d69554c940e 100644
--- a/drivers/acpi/acpi_mrrm.c
+++ b/drivers/acpi/acpi_mrrm.c
@@ -152,26 +152,49 @@ ATTRIBUTE_GROUPS(memory_range);
static __init int add_boot_memory_ranges(void)
{
- struct kobject *pkobj, *kobj;
+ struct kobject *pkobj, *kobj, **kobjs;
int ret = -EINVAL;
- char *name;
+ char name[16];
+ int i;
pkobj = kobject_create_and_add("memory_ranges", acpi_kobj);
+ if (!pkobj)
+ return -ENOMEM;
- for (int i = 0; i < mrrm_mem_entry_num; i++) {
- name = kasprintf(GFP_KERNEL, "range%d", i);
- if (!name) {
- ret = -ENOMEM;
- break;
- }
+ kobjs = kcalloc(mrrm_mem_entry_num, sizeof(*kobjs), GFP_KERNEL);
+ if (!kobjs) {
+ kobject_put(pkobj);
+ return -ENOMEM;
+ }
+ for (i = 0; i < mrrm_mem_entry_num; i++) {
+ scnprintf(name, sizeof(name), "range%d", i);
kobj = kobject_create_and_add(name, pkobj);
+ if (!kobj) {
+ ret = -ENOMEM;
+ goto cleanup;
+ }
ret = sysfs_create_groups(kobj, memory_range_groups);
- if (ret)
- return ret;
+ if (ret) {
+ kobject_put(kobj);
+ goto cleanup;
+ }
+ kobjs[i] = kobj;
}
+ kfree(kobjs);
+ return 0;
+
+cleanup:
+ for (int j = 0; j < i; j++) {
+ if (kobjs[j]) {
+ sysfs_remove_groups(kobjs[j], memory_range_groups);
+ kobject_put(kobjs[j]);
+ }
+ }
+ kfree(kobjs);
+ kobject_put(pkobj);
return ret;
}
diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c
index 3c87953dbd19..305c240a303f 100644
--- a/drivers/acpi/apei/einj-core.c
+++ b/drivers/acpi/apei/einj-core.c
@@ -182,6 +182,7 @@ bool einj_initialized __ro_after_init;
static void __iomem *einj_param;
static u32 v5param_size;
+static u32 v66param_size;
static bool is_v2;
static void einj_exec_ctx_init(struct apei_exec_context *ctx)
@@ -283,6 +284,24 @@ static void check_vendor_extension(u64 paddr,
acpi_os_unmap_iomem(p, sizeof(v));
}
+static u32 einjv2_init(struct einjv2_extension_struct *e)
+{
+ if (e->revision != 1) {
+ pr_info("Unknown v2 extension revision %u\n", e->revision);
+ return 0;
+ }
+ if (e->length < sizeof(*e) || e->length > PAGE_SIZE) {
+ pr_info(FW_BUG "Bad1 v2 extension length %u\n", e->length);
+ return 0;
+ }
+ if ((e->length - sizeof(*e)) % sizeof(e->component_arr[0])) {
+ pr_info(FW_BUG "Bad2 v2 extension length %u\n", e->length);
+ return 0;
+ }
+
+ return (e->length - sizeof(*e)) / sizeof(e->component_arr[0]);
+}
+
static void __iomem *einj_get_parameter_address(void)
{
int i;
@@ -310,28 +329,21 @@ static void __iomem *einj_get_parameter_address(void)
v5param_size = sizeof(v5param);
p = acpi_os_map_iomem(pa_v5, sizeof(*p));
if (p) {
- int offset, len;
-
memcpy_fromio(&v5param, p, v5param_size);
acpi5 = 1;
check_vendor_extension(pa_v5, &v5param);
- if (is_v2 && available_error_type & ACPI65_EINJV2_SUPP) {
- len = v5param.einjv2_struct.length;
- offset = offsetof(struct einjv2_extension_struct, component_arr);
- max_nr_components = (len - offset) /
- sizeof(v5param.einjv2_struct.component_arr[0]);
- /*
- * The first call to acpi_os_map_iomem above does not include the
- * component array, instead it is used to read and calculate maximum
- * number of components supported by the system. Below, the mapping
- * is expanded to include the component array.
- */
+ if (available_error_type & ACPI65_EINJV2_SUPP) {
+ struct einjv2_extension_struct *e;
+
+ e = &v5param.einjv2_struct;
+ max_nr_components = einjv2_init(e);
+
+ /* remap including einjv2_extension_struct */
acpi_os_unmap_iomem(p, v5param_size);
- offset = offsetof(struct set_error_type_with_address, einjv2_struct);
- v5param_size = offset + struct_size(&v5param.einjv2_struct,
- component_arr, max_nr_components);
- p = acpi_os_map_iomem(pa_v5, v5param_size);
+ v66param_size = v5param_size - sizeof(*e) + e->length;
+ p = acpi_os_map_iomem(pa_v5, v66param_size);
}
+
return p;
}
}
@@ -527,6 +539,7 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
u64 param3, u64 param4)
{
struct apei_exec_context ctx;
+ u32 param_size = is_v2 ? v66param_size : v5param_size;
u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
int i, rc;
@@ -539,11 +552,11 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
if (acpi5) {
struct set_error_type_with_address *v5param;
- v5param = kmalloc(v5param_size, GFP_KERNEL);
+ v5param = kmalloc(param_size, GFP_KERNEL);
if (!v5param)
return -ENOMEM;
- memcpy_fromio(v5param, einj_param, v5param_size);
+ memcpy_fromio(v5param, einj_param, param_size);
v5param->type = type;
if (type & ACPI5_VENDOR_BIT) {
switch (vendor_flags) {
@@ -601,7 +614,7 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
break;
}
}
- memcpy_toio(einj_param, v5param, v5param_size);
+ memcpy_toio(einj_param, v5param, param_size);
kfree(v5param);
} else {
rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
@@ -1132,9 +1145,14 @@ static void einj_remove(struct faux_device *fdev)
struct apei_exec_context ctx;
if (einj_param) {
- acpi_size size = (acpi5) ?
- v5param_size :
- sizeof(struct einj_parameter);
+ acpi_size size;
+
+ if (v66param_size)
+ size = v66param_size;
+ else if (acpi5)
+ size = v5param_size;
+ else
+ size = sizeof(struct einj_parameter);
acpi_os_unmap_iomem(einj_param, size);
if (vendor_errors.size)
diff --git a/drivers/acpi/arm64/gtdt.c b/drivers/acpi/arm64/gtdt.c
index fd995a1d3d24..8cc8af8fd408 100644
--- a/drivers/acpi/arm64/gtdt.c
+++ b/drivers/acpi/arm64/gtdt.c
@@ -430,10 +430,10 @@ static int __init gtdt_platform_timer_init(void)
continue;
pdev = platform_device_register_data(NULL, "gtdt-arm-mmio-timer",
- gwdt_count, &atm,
+ mmio_timer_count, &atm,
sizeof(atm));
if (IS_ERR(pdev)) {
- pr_err("Can't register timer %d\n", gwdt_count);
+ pr_err("Can't register timer %d\n", mmio_timer_count);
continue;
}
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index ab4651205e8a..3bdeeee3414e 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -460,7 +460,7 @@ bool acpi_cpc_valid(void)
if (acpi_disabled)
return false;
- for_each_present_cpu(cpu) {
+ for_each_online_cpu(cpu) {
cpc_ptr = per_cpu(cpc_desc_ptr, cpu);
if (!cpc_ptr)
return false;
@@ -476,7 +476,7 @@ bool cppc_allow_fast_switch(void)
struct cpc_desc *cpc_ptr;
int cpu;
- for_each_present_cpu(cpu) {
+ for_each_online_cpu(cpu) {
cpc_ptr = per_cpu(cpc_desc_ptr, cpu);
desired_reg = &cpc_ptr->cpc_regs[DESIRED_PERF];
if (!CPC_IN_SYSTEM_MEMORY(desired_reg) &&
@@ -750,7 +750,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
}
/*
- * Disregard _CPC if the number of entries in the return pachage is not
+ * Disregard _CPC if the number of entries in the return package is not
* as expected, but support future revisions being proper supersets of
* the v3 and only causing more entries to be returned by _CPC.
*/
@@ -1435,7 +1435,7 @@ bool cppc_perf_ctrs_in_pcc(void)
{
int cpu;
- for_each_present_cpu(cpu) {
+ for_each_online_cpu(cpu) {
struct cpc_register_resource *ref_perf_reg;
struct cpc_desc *cpc_desc;
diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
index 5a36d57289b4..11e4483685c9 100644
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -874,11 +874,33 @@ static void hmat_register_target_devices(struct memory_target *target)
}
}
-static void hmat_register_target(struct memory_target *target)
+static void hmat_hotplug_target(struct memory_target *target)
{
int nid = pxm_to_node(target->memory_pxm);
/*
+ * Skip offline nodes. This can happen when memory marked EFI_MEMORY_SP,
+ * "specific purpose", is applied to all the memory in a proximity
+ * domain leading to * the node being marked offline / unplugged, or if
+ * memory-only "hotplug" node is offline.
+ */
+ if (nid == NUMA_NO_NODE || !node_online(nid))
+ return;
+
+ guard(mutex)(&target_lock);
+ if (target->registered)
+ return;
+
+ hmat_register_target_initiators(target);
+ hmat_register_target_cache(target);
+ hmat_register_target_perf(target, ACCESS_COORDINATE_LOCAL);
+ hmat_register_target_perf(target, ACCESS_COORDINATE_CPU);
+ target->registered = true;
+}
+
+static void hmat_register_target(struct memory_target *target)
+{
+ /*
* Devices may belong to either an offline or online
* node, so unconditionally add them.
*/
@@ -895,25 +917,7 @@ static void hmat_register_target(struct memory_target *target)
}
mutex_unlock(&target_lock);
- /*
- * Skip offline nodes. This can happen when memory
- * marked EFI_MEMORY_SP, "specific purpose", is applied
- * to all the memory in a proximity domain leading to
- * the node being marked offline / unplugged, or if
- * memory-only "hotplug" node is offline.
- */
- if (nid == NUMA_NO_NODE || !node_online(nid))
- return;
-
- mutex_lock(&target_lock);
- if (!target->registered) {
- hmat_register_target_initiators(target);
- hmat_register_target_cache(target);
- hmat_register_target_perf(target, ACCESS_COORDINATE_LOCAL);
- hmat_register_target_perf(target, ACCESS_COORDINATE_CPU);
- target->registered = true;
- }
- mutex_unlock(&target_lock);
+ hmat_hotplug_target(target);
}
static void hmat_register_targets(void)
@@ -939,7 +943,7 @@ static int hmat_callback(struct notifier_block *self,
if (!target)
return NOTIFY_OK;
- hmat_register_target(target);
+ hmat_hotplug_target(target);
return NOTIFY_OK;
}
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index 53816dfab645..aa87ee1583a4 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -237,7 +237,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
struct acpi_srat_generic_affinity *p =
(struct acpi_srat_generic_affinity *)header;
- if (p->device_handle_type == 0) {
+ if (p->device_handle_type == 1) {
/*
* For pci devices this may be the only place they
* are assigned a proximity domain
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 5d824435b26b..65e779be64ff 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -166,7 +166,8 @@ static int __acpi_processor_start(struct acpi_device *device)
if (result && !IS_ENABLED(CONFIG_ACPI_CPU_FREQ_PSS))
dev_dbg(&device->dev, "CPPC data invalid or not present\n");
- acpi_processor_power_init(pr);
+ if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
+ acpi_processor_power_init(pr);
acpi_pss_perf_init(pr);
@@ -262,8 +263,6 @@ static int __init acpi_processor_driver_init(void)
if (result < 0)
return result;
- acpi_processor_register_idle_driver();
-
result = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
"acpi/cpu-drv:online",
acpi_soft_cpu_online, NULL);
@@ -302,7 +301,6 @@ static void __exit acpi_processor_driver_exit(void)
cpuhp_remove_state_nocalls(hp_online);
cpuhp_remove_state_nocalls(CPUHP_ACPI_CPUDRV_DEAD);
- acpi_processor_unregister_idle_driver();
driver_unregister(&acpi_processor_driver);
}
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 22b051b94a86..4166090db642 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -51,7 +51,7 @@ module_param(latency_factor, uint, 0644);
static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device);
-static struct cpuidle_driver acpi_idle_driver = {
+struct cpuidle_driver acpi_idle_driver = {
.name = "acpi_idle",
.owner = THIS_MODULE,
};
@@ -1357,102 +1357,79 @@ int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
return 0;
}
-void acpi_processor_register_idle_driver(void)
-{
- struct acpi_processor *pr;
- int ret = -ENODEV;
- int cpu;
-
- /*
- * Acpi idle driver is used by all possible CPUs.
- * Install the idle handler by the processor power info of one in them.
- * Note that we use previously set idle handler will be used on
- * platforms that only support C1.
- */
- for_each_cpu(cpu, (struct cpumask *)cpu_possible_mask) {
- pr = per_cpu(processors, cpu);
- if (!pr)
- continue;
-
- ret = acpi_processor_get_power_info(pr);
- if (!ret) {
- pr->flags.power_setup_done = 1;
- acpi_processor_setup_cpuidle_states(pr);
- break;
- }
- }
-
- if (ret) {
- pr_debug("No ACPI power information from any CPUs.\n");
- return;
- }
+static int acpi_processor_registered;
- ret = cpuidle_register_driver(&acpi_idle_driver);
- if (ret) {
- pr_debug("register %s failed.\n", acpi_idle_driver.name);
- return;
- }
- pr_debug("%s registered with cpuidle.\n", acpi_idle_driver.name);
-}
-
-void acpi_processor_unregister_idle_driver(void)
-{
- cpuidle_unregister_driver(&acpi_idle_driver);
-}
-
-void acpi_processor_power_init(struct acpi_processor *pr)
+int acpi_processor_power_init(struct acpi_processor *pr)
{
+ int retval;
struct cpuidle_device *dev;
- /*
- * The code below only works if the current cpuidle driver is the ACPI
- * idle driver.
- */
- if (cpuidle_get_driver() != &acpi_idle_driver)
- return;
-
if (disabled_by_idle_boot_param())
- return;
+ return 0;
acpi_processor_cstate_first_run_checks();
if (!acpi_processor_get_power_info(pr))
pr->flags.power_setup_done = 1;
- if (!pr->flags.power)
- return;
-
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return;
+ /*
+ * Install the idle handler if processor power management is supported.
+ * Note that we use previously set idle handler will be used on
+ * platforms that only support C1.
+ */
+ if (pr->flags.power) {
+ /* Register acpi_idle_driver if not already registered */
+ if (!acpi_processor_registered) {
+ acpi_processor_setup_cpuidle_states(pr);
+ retval = cpuidle_register_driver(&acpi_idle_driver);
+ if (retval)
+ return retval;
+ pr_debug("%s registered with cpuidle\n",
+ acpi_idle_driver.name);
+ }
- per_cpu(acpi_cpuidle_device, pr->id) = dev;
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ per_cpu(acpi_cpuidle_device, pr->id) = dev;
- acpi_processor_setup_cpuidle_dev(pr, dev);
+ acpi_processor_setup_cpuidle_dev(pr, dev);
- /*
- * Register a cpuidle device for this CPU. The cpuidle driver using
- * this device is expected to be registered.
- */
- if (cpuidle_register_device(dev)) {
- per_cpu(acpi_cpuidle_device, pr->id) = NULL;
- kfree(dev);
+ /* Register per-cpu cpuidle_device. Cpuidle driver
+ * must already be registered before registering device
+ */
+ retval = cpuidle_register_device(dev);
+ if (retval) {
+ if (acpi_processor_registered == 0)
+ cpuidle_unregister_driver(&acpi_idle_driver);
+
+ per_cpu(acpi_cpuidle_device, pr->id) = NULL;
+ kfree(dev);
+ return retval;
+ }
+ acpi_processor_registered++;
}
+ return 0;
}
-void acpi_processor_power_exit(struct acpi_processor *pr)
+int acpi_processor_power_exit(struct acpi_processor *pr)
{
struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
if (disabled_by_idle_boot_param())
- return;
+ return 0;
if (pr->flags.power) {
cpuidle_unregister_device(dev);
+ acpi_processor_registered--;
+ if (acpi_processor_registered == 0)
+ cpuidle_unregister_driver(&acpi_idle_driver);
+
kfree(dev);
}
pr->flags.power_setup_done = 0;
+ return 0;
}
MODULE_IMPORT_NS("ACPI_PROCESSOR_IDLE");
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index a3f95a3fffde..d3edc3bcbf01 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -487,7 +487,7 @@ static int acpi_battery_read(struct acpi_battery *battery)
if (result)
return result;
- battery->present = state & (1 << battery->id);
+ battery->present = !!(state & (1 << battery->id));
if (!battery->present)
return 0;
generated by cgit (git 2.34.1) at 2025-11-30 13:01:52 +0000