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ACPI fixes for v4.14-rc2 

- Fix the initialization of resources in the ACPI WDAT watchdog
    driver that uses unititialized memory which causes compiler
    warnings to be triggered (Arnd Bergmann).
 
  - Fix a recent regression in the ACPI device properties handling
    that causes some device properties data to be skipped during
    enumeration (Sakari Ailus).
 
  - Fix a recent change in behavior that caused the ACPI_HANDLE()
    macro to stop working for non-GPL code which is a problem for
    the NVidia binary graphics driver, for example (John Hubbard).
 
  - Add a MAINTAINERS entry for the ACPI PMIC drivers to specify
    the official reviewers for that code (Rafael Wysocki).
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Merge tag 'acpi-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix the initialization of resources in the ACPI WDAT watchdog
  driver, a recent regression in the ACPI device properties handling, a
  recent change in behavior causing the ACPI_HANDLE() macro to only work
  for GPL code and create a MAINTAINERS entry for ACPI PMIC drivers in
  order to specify the official reviewers for that code.

  Specifics:

   - Fix the initialization of resources in the ACPI WDAT watchdog
     driver that uses unititialized memory which causes compiler
     warnings to be triggered (Arnd Bergmann).

   - Fix a recent regression in the ACPI device properties handling that
     causes some device properties data to be skipped during enumeration
     (Sakari Ailus).

   - Fix a recent change in behavior that caused the ACPI_HANDLE() macro
     to stop working for non-GPL code which is a problem for the NVidia
     binary graphics driver, for example (John Hubbard).

   - Add a MAINTAINERS entry for the ACPI PMIC drivers to specify the
     official reviewers for that code (Rafael Wysocki)"

* tag 'acpi-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: properties: Return _DSD hierarchical extension (data) sub-nodes correctly
  ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again
  ACPI / watchdog: properly initialize resources
  ACPI / PMIC: Add code reviewers to MAINTAINERS
zero-colors
Linus Torvalds 2017-09-22 17:40:11 -10:00
parent 6876eb3720 672d0e4502
commit c65da8e22b
4 changed files with 36 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
MAINTAINERS
View File

@ -352,6 +352,18 @@ L: linux-acpi@vger.kernel.org
S: Maintained
F: drivers/acpi/arm64
ACPI PMIC DRIVERS
M: "Rafael J. Wysocki" <rjw@rjwysocki.net>
M: Len Brown <lenb@kernel.org>
R: Andy Shevchenko <andy@infradead.org>
R: Mika Westerberg <mika.westerberg@linux.intel.com>
L: linux-acpi@vger.kernel.org
Q: https://patchwork.kernel.org/project/linux-acpi/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
B: https://bugzilla.kernel.org
S: Supported
F: drivers/acpi/pmic/
ACPI THERMAL DRIVER
M: Zhang Rui <rui.zhang@intel.com>
L: linux-acpi@vger.kernel.org

2
drivers/acpi/acpi_watchdog.c
View File

@ -66,7 +66,7 @@ void __init acpi_watchdog_init(void)
for (i = 0; i < wdat->entries; i++) {
const struct acpi_generic_address *gas;
struct resource_entry *rentry;
struct resource res;
struct resource res = {};
bool found;
gas = &entries[i].register_region;

24
drivers/acpi/property.c
View File

@ -908,11 +908,12 @@ struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode,
struct fwnode_handle *child)
{
const struct acpi_device *adev = to_acpi_device_node(fwnode);
struct acpi_device *child_adev = NULL;
const struct list_head *head;
struct list_head *next;
if (!child || is_acpi_device_node(child)) {
struct acpi_device *child_adev;
if (adev)
head = &adev->children;
else
@ -922,8 +923,8 @@ struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode,
goto nondev;
if (child) {
child_adev = to_acpi_device_node(child);
next = child_adev->node.next;
adev = to_acpi_device_node(child);
next = adev->node.next;
if (next == head) {
child = NULL;
goto nondev;
@ -941,8 +942,8 @@ struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode,
const struct acpi_data_node *data = to_acpi_data_node(fwnode);
struct acpi_data_node *dn;
if (child_adev)
head = &child_adev->data.subnodes;
if (adev)
head = &adev->data.subnodes;
else if (data)
head = &data->data.subnodes;
else
@ -1293,3 +1294,16 @@ static int acpi_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
DECLARE_ACPI_FWNODE_OPS(acpi_device_fwnode_ops);
DECLARE_ACPI_FWNODE_OPS(acpi_data_fwnode_ops);
const struct fwnode_operations acpi_static_fwnode_ops;
bool is_acpi_device_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) &&
fwnode->ops == &acpi_device_fwnode_ops;
}
EXPORT_SYMBOL(is_acpi_device_node);
bool is_acpi_data_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &acpi_data_fwnode_ops;
}
EXPORT_SYMBOL(is_acpi_data_node);

18
include/acpi/acpi_bus.h
View File

@ -399,17 +399,12 @@ extern const struct fwnode_operations acpi_device_fwnode_ops;
extern const struct fwnode_operations acpi_data_fwnode_ops;
extern const struct fwnode_operations acpi_static_fwnode_ops;
bool is_acpi_device_node(const struct fwnode_handle *fwnode);
bool is_acpi_data_node(const struct fwnode_handle *fwnode);
static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) &&
(fwnode->ops == &acpi_device_fwnode_ops
|| fwnode->ops == &acpi_data_fwnode_ops);
}
static inline bool is_acpi_device_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) &&
fwnode->ops == &acpi_device_fwnode_ops;
return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
}
#define to_acpi_device_node(__fwnode) \
@ -422,11 +417,6 @@ static inline bool is_acpi_device_node(const struct fwnode_handle *fwnode)
NULL; \
})
static inline bool is_acpi_data_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &acpi_data_fwnode_ops;
}
#define to_acpi_data_node(__fwnode) \
({ \
typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \