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ACPI fix for v4.7-rc5

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Stable-candidate fix for a deadlock in ACPICA introduced during the
 4.5 development cycle by a commit attempting to improve the handling
 of AML code that doesn't belong to any namespace objects in a given
 definition block (Lv Zheng).
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Merge tag 'acpi-4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Stable-candidate fix for a deadlock in ACPICA introduced during the
  4.5 development cycle by a commit attempting to improve the handling
  of AML code that doesn't belong to any namespace objects in a given
  definition block (Lv Zheng)"

* tag 'acpi-4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading
This commit is contained in:
Linus Torvalds 2016-06-24 18:29:55 -07:00
commit ed13fbbf87
2 changed files with 9 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/acpi/acpica/exconfig.c
View file

@ -108,7 +108,9 @@ acpi_ex_add_table(u32 table_index,
/* Add the table to the namespace */
acpi_ex_exit_interpreter();
status = acpi_ns_load_table(table_index, parent_node);
acpi_ex_enter_interpreter();
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(obj_desc);
*ddb_handle = NULL;

9
drivers/acpi/acpica/nsparse.c
View file

@ -47,6 +47,7 @@
#include "acparser.h"
#include "acdispat.h"
#include "actables.h"
#include "acinterp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsparse")
@ -170,6 +171,8 @@ acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
ACPI_FUNCTION_TRACE(ns_parse_table);
acpi_ex_enter_interpreter();
/*
* AML Parse, pass 1
*
@ -185,7 +188,7 @@ acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS1,
table_index, start_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto error_exit;
}
/*
@ -201,8 +204,10 @@ acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS2,
table_index, start_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto error_exit;
}
error_exit:
acpi_ex_exit_interpreter();
return_ACPI_STATUS(status);
}