diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/achware.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/ec.c | 31 | ||||
| -rw-r--r-- | drivers/acpi/resource.c | 60 | ||||
| -rw-r--r-- | drivers/acpi/scan.c | 81 | ||||
| -rw-r--r-- | drivers/acpi/sleep.c | 16 |
5 files changed, 89 insertions, 101 deletions
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index ebf8fd373cf7..79bbfe00d241 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -101,8 +101,6 @@ acpi_status acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info, acpi_event_status *event_status); -acpi_status acpi_hw_disable_all_gpes(void); - acpi_status acpi_hw_enable_all_runtime_gpes(void); acpi_status acpi_hw_enable_all_wakeup_gpes(void); diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 928899ab9502..8569f55e55b6 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -662,21 +662,6 @@ static void advance_transaction(struct acpi_ec *ec, bool interrupt) ec_dbg_stm("%s (%d)", interrupt ? "IRQ" : "TASK", smp_processor_id()); - /* - * 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_gpe_status_set(ec)) - acpi_clear_gpe(NULL, ec->gpe); - status = acpi_ec_read_status(ec); /* @@ -1287,6 +1272,22 @@ static void acpi_ec_handle_interrupt(struct acpi_ec *ec) unsigned long flags; spin_lock_irqsave(&ec->lock, flags); + + /* + * 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_gpe_status_set(ec)) + acpi_clear_gpe(NULL, ec->gpe); + advance_transaction(ec, true); spin_unlock_irqrestore(&ec->lock, flags); } diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 0800a9d77558..1dd8d5aebf67 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -470,52 +470,6 @@ static const struct dmi_system_id asus_laptop[] = { { } }; -static const struct dmi_system_id lenovo_laptop[] = { - { - .ident = "LENOVO IdeaPad Flex 5 14ALC7", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "82R9"), - }, - }, - { - .ident = "LENOVO IdeaPad Flex 5 16ALC7", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "82RA"), - }, - }, - { } -}; - -static const struct dmi_system_id tongfang_gm_rg[] = { - { - .ident = "TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), - }, - }, - { } -}; - -static const struct dmi_system_id maingear_laptop[] = { - { - .ident = "MAINGEAR Vector Pro 2 15", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), - DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"), - } - }, - { - .ident = "MAINGEAR Vector Pro 2 17", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), - DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"), - }, - }, - { } -}; - static const struct dmi_system_id lg_laptop[] = { { .ident = "LG Electronics 17U70P", @@ -539,10 +493,6 @@ struct irq_override_cmp { static const struct irq_override_cmp override_table[] = { { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, - { lenovo_laptop, 6, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true }, - { lenovo_laptop, 10, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true }, - { tongfang_gm_rg, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, - { maingear_laptop, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, { lg_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, }; @@ -562,16 +512,6 @@ static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity, return entry->override; } -#ifdef CONFIG_X86 - /* - * IRQ override isn't needed on modern AMD Zen systems and - * this override breaks active low IRQs on AMD Ryzen 6000 and - * newer systems. Skip it. - */ - if (boot_cpu_has(X86_FEATURE_ZEN)) - return false; -#endif - return true; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 0c6f06abe3f4..1c3e1e2bb0b5 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2029,8 +2029,6 @@ static u32 acpi_scan_check_dep(acpi_handle handle, bool check_dep) return count; } -static bool acpi_bus_scan_second_pass; - static acpi_status acpi_bus_check_add(acpi_handle handle, bool check_dep, struct acpi_device **adev_p) { @@ -2050,10 +2048,8 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, bool check_dep, return AE_OK; /* Bail out if there are dependencies. */ - if (acpi_scan_check_dep(handle, check_dep) > 0) { - acpi_bus_scan_second_pass = true; + if (acpi_scan_check_dep(handle, check_dep) > 0) return AE_CTRL_DEPTH; - } fallthrough; case ACPI_TYPE_ANY: /* for ACPI_ROOT_OBJECT */ @@ -2301,6 +2297,12 @@ static bool acpi_scan_clear_dep_queue(struct acpi_device *adev) return true; } +static void acpi_scan_delete_dep_data(struct acpi_dep_data *dep) +{ + list_del(&dep->node); + kfree(dep); +} + static int acpi_scan_clear_dep(struct acpi_dep_data *dep, void *data) { struct acpi_device *adev = acpi_get_acpi_dev(dep->consumer); @@ -2311,8 +2313,10 @@ static int acpi_scan_clear_dep(struct acpi_dep_data *dep, void *data) acpi_dev_put(adev); } - list_del(&dep->node); - kfree(dep); + if (dep->free_when_met) + acpi_scan_delete_dep_data(dep); + else + dep->met = true; return 0; } @@ -2406,6 +2410,55 @@ struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier, } EXPORT_SYMBOL_GPL(acpi_dev_get_next_consumer_dev); +static void acpi_scan_postponed_branch(acpi_handle handle) +{ + struct acpi_device *adev = NULL; + + if (ACPI_FAILURE(acpi_bus_check_add(handle, false, &adev))) + return; + + acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, + acpi_bus_check_add_2, NULL, NULL, (void **)&adev); + acpi_bus_attach(adev, NULL); +} + +static void acpi_scan_postponed(void) +{ + struct acpi_dep_data *dep, *tmp; + + mutex_lock(&acpi_dep_list_lock); + + list_for_each_entry_safe(dep, tmp, &acpi_dep_list, node) { + acpi_handle handle = dep->consumer; + + /* + * In case there are multiple acpi_dep_list entries with the + * same consumer, skip the current entry if the consumer device + * object corresponding to it is present already. + */ + if (!acpi_fetch_acpi_dev(handle)) { + /* + * Even though the lock is released here, tmp is + * guaranteed to be valid, because none of the list + * entries following dep is marked as "free when met" + * and so they cannot be deleted. + */ + mutex_unlock(&acpi_dep_list_lock); + + acpi_scan_postponed_branch(handle); + + mutex_lock(&acpi_dep_list_lock); + } + + if (dep->met) + acpi_scan_delete_dep_data(dep); + else + dep->free_when_met = true; + } + + mutex_unlock(&acpi_dep_list_lock); +} + /** * acpi_bus_scan - Add ACPI device node objects in a given namespace scope. * @handle: Root of the namespace scope to scan. @@ -2424,8 +2477,6 @@ int acpi_bus_scan(acpi_handle handle) { struct acpi_device *device = NULL; - acpi_bus_scan_second_pass = false; - /* Pass 1: Avoid enumerating devices with missing dependencies. */ if (ACPI_SUCCESS(acpi_bus_check_add(handle, true, &device))) @@ -2438,19 +2489,9 @@ int acpi_bus_scan(acpi_handle handle) acpi_bus_attach(device, (void *)true); - if (!acpi_bus_scan_second_pass) - return 0; - /* Pass 2: Enumerate all of the remaining devices. */ - device = NULL; - - if (ACPI_SUCCESS(acpi_bus_check_add(handle, false, &device))) - acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, - acpi_bus_check_add_2, NULL, NULL, - (void **)&device); - - acpi_bus_attach(device, NULL); + acpi_scan_postponed(); return 0; } diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 552adc04743b..808484d11209 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -636,11 +636,19 @@ static int acpi_suspend_enter(suspend_state_t pm_state) } /* - * Disable and clear GPE status before interrupt is enabled. Some GPEs - * (like wakeup GPE) haven't handler, this can avoid such GPE misfire. - * acpi_leave_sleep_state will reenable specific GPEs later + * Disable all GPE and clear their status bits before interrupts are + * enabled. Some GPEs (like wakeup GPEs) have no handlers and this can + * prevent them from producing spurious interrups. + * + * acpi_leave_sleep_state() will reenable specific GPEs later. + * + * Because this code runs on one CPU with disabled interrupts (all of + * the other CPUs are offline at this time), it need not acquire any + * sleeping locks which may trigger an implicit preemption point even + * if there is no contention, so avoid doing that by using a low-level + * library routine here. */ - acpi_disable_all_gpes(); + acpi_hw_disable_all_gpes(); /* Allow EC transactions to happen. */ acpi_ec_unblock_transactions(); |