diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-06-02 16:36:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-06-02 16:36:23 -0700 |
| commit | 104c08ba8e921ef97abfdc10408d54921a6d9003 (patch) | |
| tree | 7e744f5660b78e0842354a95fc8cdbb2e7e668a5 | |
| parent | 89af529a6469d612258fce5745a7d45430f316ce (diff) | |
| parent | 60319130254084b337e02439d3b4ec301b6328bb (diff) | |
Merge tag 'acpi-4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These revert one more problematic commit related to the ACPI-based
handling of laptop lids and make some unuseful error messages coming
from ACPICA go away.
Specifics:
- Revert one more commit related to the ACPI-based handling of laptop
lids that changed the default behavior on laptops that booted with
closed lids and introduced a regression there (Benjamin Tissoires).
- Add a missing acpi_put_table() to the code implementing the
/sys/firmware/acpi/tables interface to prevent a counter in the
ACPICA core from overflowing (Dan Williams).
- Drop error messages printed by ACPICA on acpi_get_table() reference
counting mismatches as they need not indicate real errors at this
point (Lv Zheng)"
* tag 'acpi-4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPICA: Tables: Fix regression introduced by a too early mechanism enabling
Revert "ACPI / button: Change default behavior to lid_init_state=open"
ACPI / sysfs: fix acpi_get_table() leak / acpi-sysfs denial of service
| -rw-r--r-- | drivers/acpi/acpica/tbutils.c | 4 | ||||
| -rw-r--r-- | drivers/acpi/button.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/sysfs.c | 7 |
3 files changed, 6 insertions, 7 deletions
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index 5a968a78652b..7abe66505739 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -418,11 +418,7 @@ acpi_tb_get_table(struct acpi_table_desc *table_desc, table_desc->validation_count++; if (table_desc->validation_count == 0) { - ACPI_ERROR((AE_INFO, - "Table %p, Validation count is zero after increment\n", - table_desc)); table_desc->validation_count--; - return_ACPI_STATUS(AE_LIMIT); } *out_table = table_desc->pointer; diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 25aba9b107dd..9ad8cdb58743 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -113,7 +113,7 @@ struct acpi_button { static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); static struct acpi_device *lid_device; -static u8 lid_init_state = ACPI_BUTTON_LID_INIT_OPEN; +static u8 lid_init_state = ACPI_BUTTON_LID_INIT_METHOD; static unsigned long lid_report_interval __read_mostly = 500; module_param(lid_report_interval, ulong, 0644); diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 1b5ee1e0e5a3..e414fabf7315 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -333,14 +333,17 @@ static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj, container_of(bin_attr, struct acpi_table_attr, attr); struct acpi_table_header *table_header = NULL; acpi_status status; + ssize_t rc; status = acpi_get_table(table_attr->name, table_attr->instance, &table_header); if (ACPI_FAILURE(status)) return -ENODEV; - return memory_read_from_buffer(buf, count, &offset, - table_header, table_header->length); + rc = memory_read_from_buffer(buf, count, &offset, table_header, + table_header->length); + acpi_put_table(table_header); + return rc; } static int acpi_table_attr_init(struct kobject *tables_obj, |