linux-stable.git/drivers/pnp, branch linux-3.14.y

asmlinkage, pnp: Make variables used from assembler code visible

2016-05-19T00:03:59+00:00

commit a99aa42d0253f033cbb85096d3f2bd82201321e6 upstream.

Mark variables referenced from assembler files visible.

This fixes compile problems with LTO.

Cc: Jaroslav Kysela 
Signed-off-by: Andi Kleen 
Link: http://lkml.kernel.org/r/1391845930-28580-4-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin 
Cc: Christoph Biedl 
Signed-off-by: Greg Kroah-Hartman

ACPI / PNP: Fix acpi_pnp_match()

2014-08-07T21:52:37+00:00

commit b6328a07bd6b3d31b64f85864fe74f3b08c010ca upstream.

The acpi_pnp_match() function is used for finding the ACPI device
object that should be associated with the given PNP device.
Unfortunately, the check used by that function is not strict enough
and may cause success to be returned for a wrong ACPI device object.

To fix that, use the observation that the pointer to the ACPI
device object in question is already stored in the data field
in struct pnp_dev, so acpi_pnp_match() can simply use that
field to do its job.

This problem was uncovered in 3.14 by commit 202317a573b2 (ACPI / scan:
Add acpi_device objects for all device nodes in the namespace).

Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
Reported-and-tested-by: Vinson Lee 
Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

PNP / ACPI: Do not return errors if _DIS or _SRS are not present

2014-06-07T17:28:12+00:00

commit a8d22396302b7e4e5f0a594c1c1594388c29edaf upstream.

The ACPI PNP subsystem returns errors from pnpacpi_set_resources()
and pnpacpi_disable_resources() if the _SRS or _DIS methods are not
present, respectively, but it should not do that, because those
methods are optional.  For this reason, modify pnpacpi_set_resources()
and pnpacpi_disable_resources(), respectively, to ignore missing _SRS
or _DIS.

This problem has been uncovered by commit 202317a573b2 (ACPI / scan:
Add acpi_device objects for all device nodes in the namespace) and
manifested itself by causing serial port suspend to fail on some
systems.

Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
References: https://bugzilla.kernel.org/show_bug.cgi?id=74371
Reported-by: wxg4net 
Reported-and-tested-by: 
Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

PNP / ACPI: proper handling of ACPI IO/Memory resource parsing failures

2014-03-11T20:22:10+00:00

Before commit b355cee88e3b (ACPI / resources: ignore invalid ACPI
device resources), if acpi_dev_resource_memory()/acpi_dev_resource_io()
returns false, it means the the resource is not a memeory/IO resource.

But after commit b355cee88e3b, those functions return false if the
given memory/IO resource entry is invalid (the length of the resource
is zero).

This breaks pnpacpi_allocated_resource(), because it now recognizes
the invalid memory/io resources as resources of unknown type.  Thus
users see confusing warning messages on machines with zero length
ACPI memory/IO resources.

Fix the problem by rearranging pnpacpi_allocated_resource() so that
it calls acpi_dev_resource_memory() for memory type and IO type
resources only, respectively.

Fixes: b355cee88e3b (ACPI / resources: ignore invalid ACPI device resources)
Signed-off-by: Zhang Rui 
Reported-and-tested-by: Markus Trippelsdorf 
Reported-and-tested-by: Julian Wollrath 
Reported-and-tested-by: Paul Bolle 
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki

Merge branch 'pnp'

2014-01-12T22:48:18+00:00

* pnp:
  PNPBIOS: check return value of pnp_add_device()
  PNP: Mark the function pnp_build_option() as static in resource.c
  PNP / card: add missing put_device() call
  PNPACPI: check return value of pnp_add_device()

Merge branch 'acpi-hotplug'

2014-01-12T22:45:04+00:00

* acpi-hotplug:
  ACPI / scan: ACPI device object sysfs attribute for _STA evaluation
  ACPI / hotplug / driver core: Handle containers in a special way
  ACPI / hotplug: Add demand_offline hotplug profile flag
  ACPI / bind: Move acpi_get_child() to drivers/ide/ide-acpi.c
  ACPI / bind: Pass struct acpi_device pointer to acpi_bind_one()
  ACPI / bind: Rework struct acpi_bus_type
  ACPI / bind: Redefine acpi_preset_companion()
  ACPI / bind: Redefine acpi_get_child()
  PCI / ACPI: Use acpi_find_child_device() for child devices lookup
  ACPI / bind: Simplify child device lookups
  ACPI / scan: Use direct recurrence for device hierarchy walks
  ACPI: Introduce acpi_set_device_status()
  ACPI / hotplug: Drop unfinished global notification handling routines
  ACPI / hotplug: Rework generic code to handle suprise removals
  ACPI / hotplug: Move container-specific code out of the core
  ACPI / hotplug: Make ACPI PCI root hotplug use common hotplug code
  ACPI / hotplug: Introduce common hotplug function acpi_device_hotplug()
  ACPI / hotplug: Do not fail bus and device checks for disabled hotplug
  ACPI / scan: Add acpi_device objects for all device nodes in the namespace
  ACPI / scan: Define non-empty device removal handler

Merge branch 'acpi-cleanup'

2014-01-12T22:44:09+00:00

* acpi-cleanup: (22 commits)
  ACPI / tables: Return proper error codes from acpi_table_parse() and fix comment.
  ACPI / tables: Check if id is NULL in acpi_table_parse()
  ACPI / proc: Include appropriate header file in proc.c
  ACPI / EC: Remove unused functions and add prototype declaration in internal.h
  ACPI / dock: Include appropriate header file in dock.c
  ACPI / PCI: Include appropriate header file in pci_link.c
  ACPI / PCI: Include appropriate header file in pci_slot.c
  ACPI / EC: Mark the function acpi_ec_add_debugfs() as static in ec_sys.c
  ACPI / NVS: Include appropriate header file in nvs.c
  ACPI / OSL: Mark the function acpi_table_checksum() as static
  ACPI / processor: initialize a variable to silence compiler warning
  ACPI / processor: use ACPI_COMPANION() to get ACPI device
  ACPI: correct minor typos
  ACPI / sleep: Drop redundant acpi_disabled check
  ACPI / dock: Drop redundant acpi_disabled check
  ACPI / table: Replace '1' with specific error return values
  ACPI: remove trailing whitespace
  ACPI / IBFT: Fix incorrect  inclusion in iSCSI boot firmware module
  ACPI / i915: Fix incorrect  inclusions via 
  SFI / ACPI: Fix warnings reported during builds with W=1
  ...

Conflicts:
	drivers/acpi/nvs.c
	drivers/hwmon/asus_atk0110.c

PNPBIOS: check return value of pnp_add_device()

2014-01-06T23:16:37+00:00

pnp_add_device() may fail so we need to handle errors and avoid leaking
memory.

Also, when pnp_alloc_dev fails, return -ENOMEM rather than -1.

Signed-off-by: Dmitry Torokhov 
Signed-off-by: Rafael J. Wysocki

PNP: Mark the function pnp_build_option() as static in resource.c

2014-01-05T23:24:54+00:00

This patch marks the function pnp_build_option() as static in resource.c
because it is not used outside this file.

Thus, it also eliminates the following warning in resource.c:
drivers/pnp/resource.c:34:20: warning: no previous prototype for ‘pnp_build_option’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria 
Reviewed-by: Josh Triplett 
Signed-off-by: Rafael J. Wysocki

PNP / card: add missing put_device() call

2014-01-05T21:50:06+00:00

This is required so that we give up the last reference to the device.

Signed-off-by: Levente Kurusa 
Signed-off-by: Rafael J. Wysocki