diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/nswalk.c | 3 | ||||
| -rw-r--r-- | drivers/acpi/apei/bert.c | 10 | ||||
| -rw-r--r-- | drivers/acpi/apei/erst.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/apei/hest.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/cppc_acpi.c | 5 | ||||
| -rw-r--r-- | drivers/acpi/processor_idle.c | 15 | ||||
| -rw-r--r-- | drivers/acpi/property.c | 2 |
7 files changed, 28 insertions, 11 deletions
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index ceea6af79d12..bf4eb642f423 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -169,6 +169,9 @@ acpi_ns_walk_namespace(acpi_object_type type, if (start_node == ACPI_ROOT_OBJECT) { start_node = acpi_gbl_root_node; + if (!start_node) { + return_ACPI_STATUS(AE_NO_NAMESPACE); + } } /* Null child means "get first node" */ diff --git a/drivers/acpi/apei/bert.c b/drivers/acpi/apei/bert.c index 1155fb9dcc3a..76b7539a37a9 100644 --- a/drivers/acpi/apei/bert.c +++ b/drivers/acpi/apei/bert.c @@ -29,6 +29,7 @@ #undef pr_fmt #define pr_fmt(fmt) "BERT: " fmt +#define ACPI_BERT_PRINT_MAX_LEN 1024 static int bert_disable; @@ -58,8 +59,11 @@ static void __init bert_print_all(struct acpi_bert_region *region, } pr_info_once("Error records from previous boot:\n"); - - cper_estatus_print(KERN_INFO HW_ERR, estatus); + if (region_len < ACPI_BERT_PRINT_MAX_LEN) + cper_estatus_print(KERN_INFO HW_ERR, estatus); + else + pr_info_once("Max print length exceeded, table data is available at:\n" + "/sys/firmware/acpi/tables/data/BERT"); /* * Because the boot error source is "one-time polled" type, @@ -77,7 +81,7 @@ static int __init setup_bert_disable(char *str) { bert_disable = 1; - return 0; + return 1; } __setup("bert_disable", setup_bert_disable); diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index 2015a0967cbb..5ee3cb7fcd90 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -891,7 +891,7 @@ EXPORT_SYMBOL_GPL(erst_clear); static int __init setup_erst_disable(char *str) { erst_disable = 1; - return 0; + return 1; } __setup("erst_disable", setup_erst_disable); diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 267bdbf6a7bf..add6416e78f2 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -219,7 +219,7 @@ err: static int __init setup_hest_disable(char *str) { hest_disable = HEST_DISABLED; - return 0; + return 1; } __setup("hest_disable", setup_hest_disable); diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 2826bd45c61a..0521b1d4c2fd 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -738,6 +738,11 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr) cpc_obj = &out_obj->package.elements[0]; if (cpc_obj->type == ACPI_TYPE_INTEGER) { num_ent = cpc_obj->integer.value; + if (num_ent <= 1) { + pr_debug("Unexpected _CPC NumEntries value (%d) for CPU:%d\n", + num_ent, pr->id); + goto out_free; + } } else { pr_debug("Unexpected entry type(%d) for NumEntries\n", cpc_obj->type); diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index e5bb5d776b54..3d8b0aff5a3a 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1057,6 +1057,11 @@ static int flatten_lpi_states(struct acpi_processor *pr, return 0; } +int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu) +{ + return -EOPNOTSUPP; +} + static int acpi_processor_get_lpi_info(struct acpi_processor *pr) { int ret, i; @@ -1065,6 +1070,11 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr) struct acpi_device *d = NULL; struct acpi_lpi_states_array info[2], *tmp, *prev, *curr; + /* make sure our architecture has support */ + ret = acpi_processor_ffh_lpi_probe(pr->id); + if (ret == -EOPNOTSUPP) + return ret; + if (!osc_pc_lpi_support_confirmed) return -EOPNOTSUPP; @@ -1116,11 +1126,6 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr) return 0; } -int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu) -{ - return -ENODEV; -} - int __weak acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi) { return -ENODEV; diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index a08e3eb2a6f9..a4b7cdd0c844 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -692,7 +692,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode, */ if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) { if (index) - return -EINVAL; + return -ENOENT; ret = acpi_bus_get_device(obj->reference.handle, &device); if (ret) |