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[ Upstream commit 3522f867c13b63cf62acdf1b8ca5664c549a716a ]
acpi_ec.gpe is "unsigned long", hence treating it as "u32" would expose
the wrong half on big-endian 64-bit systems. Fix this by changing its
type to "u32" and removing the cast, as all other code already uses u32
or sometimes even only u8.
Fixes: 1195a098168fcacf (ACPI: Provide /sys/kernel/debug/ec/...)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 5928c281524fe451114e04f1dfa11246a37e859f ]
We're seeing a lot of bogus backlight interfaces on newer machines without
a LCD such as desktops, servers and HDMI sticks. This causes userspace to
show a non-functional brightness slider in e.g. the GNOME3 system menu,
which is undesirable. And, in general, we should simply just not register
a non functional backlight interface.
Checking the LCD flag causes the bogus acpi_video backlight interfaces to
go away (on the machines this was tested on).
This change sets the lcd_only option by default on any machines which
are Win8-ready, to fix this.
This is not entirely without a risk of regressions, but video_detect.c
already prefers native-backlight interfaces over the acpi_video one
on Win8-ready machines, calling acpi_video_unregister_backlight() as soon
as a native interface shows up. This is done because the ACPI backlight
interface often is broken on Win8-ready machines, because win8 does not
seem to actually use it.
So in practice we already end up not registering the ACPI backlight
interface on (most) Win8-ready machines with a LCD panel, thus this
change does not change anything for (most) machines with a LCD panel
and on machines without a LCD panel we actually don't want to register
any backlight interfaces.
This has been tested on the following machines and fixes a bogus backlight
interface showing up there:
- Desktop with an Asrock B150M Pro4S/D3 m.b. using i5-6500 builtin gfx
- Intel Compute Stick STK1AW32SC
- Meegopad T08 HDMI stick
Bogus backlight interfaces have also been reported on:
- Desktop with Asus H87I-Plus m.b.
- Desktop with ASRock B75M-ITX m.b.
- Desktop with Gigabyte Z87-D3HP m.b.
- Dell PowerEdge T20 desktop
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1097436
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1133327
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1133329
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1133646
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b1abf6fc49829d89660c961fafe3f90f3d843c55 upstream.
The resource allocation in WDAT watchdog has off-one-by error, it sets
one byte more than the actual end address. This may eventually lead
to unexpected resource conflicts.
Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog)
Cc: 4.9+ <stable@vger.kernel.org> # 4.9+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit dc9e0a9347e932e3fd3cd03e7ff241022ed6ea8a upstream.
Commit 99759869faf1 "acpi: Add acpi_map_pxm_to_online_node()" added
support for mapping a given proximity to its nearest, by SLIT distance,
online node. However, it sometimes returns unexpected results due to the
fact that it switches from comparing the PXM node to the last node that
was closer than the current max.
for_each_online_node(n) {
dist = node_distance(node, n);
if (dist < min_dist) {
min_dist = dist;
node = n; <---- from this point we're using the
wrong node for node_distance()
Fixes: 99759869faf1 ("acpi: Add acpi_map_pxm_to_online_node()")
Cc: <stable@vger.kernel.org>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 36904703aeeeb6cd31993f1353c8325006229f9a upstream.
The i2c touchpad on Dell XPS 9570 and Precision M5530 doesn't work out
of box.
The touchpad relies on its _INI method to update its _HID value from
XXXX0000 to SYNA2393.
Also, the _STA relies on value of I2CN to report correct status.
Set acpi_gbl_parse_table_as_term_list so the value of I2CN can be
correctly set up, and _INI can get run. The ACPI table in this machine
is designed to get parsed this way.
Also, change the quirk table to a more generic name.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198515
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 23fbd7c70aec7600e3227eb24259fc55bf6e4881 upstream.
A NULL pointer reference kernel bug was observed when
acpi_nfit_add_dimm() called in acpi_nfit_register_dimms() failed. This
error path does not set nfit_mem->nvdimm, but the 2nd
list_for_each_entry() loop in the function assumes it's always set. Add
a check to nfit_mem->nvdimm.
Fixes: ba9c8dd3c222 ("acpi, nfit: add dimm device notification support")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 43cdd1b716b26f6af16da4e145b6578f98798bf6 upstream.
There's no need to be printing a raw kernel pointer to the kernel log at
every boot. So just remove it, and change the whole message to use the
correct dev_info() call at the same time.
Reported-by: Wang Qize <wang_qize@venustech.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"These fixes are all tagged for -stable and have received a build
success notification from the kbuild robot.
- NVDIMM namespaces, configured to enforce 1GB alignment, fail to
initialize on platforms that mis-align the start or end of the
physical address range.
- The Linux implementation of the BTT (Block Translation Table) is
incompatible with the UEFI 2.7 definition of the BTT format. The
BTT layers a software atomic sector semantic on top of an NVDIMM
namespace. Linux needs to be compatible with the UEFI definition to
enable boot support or any pre-OS access of data on a BTT enabled
namespace.
- A fix for ACPI SMART notification events, this allows a userspace
monitor to register for health events rather than poll. This has
been broken since it was initially merged as the unit test
inadvertently worked around the problem. The urgency for fixing
this during the -rc series is driven by how expensive it is to poll
for this data (System Management Mode entry)"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, btt: Fix an incompatibility in the log layout
libnvdimm, btt: add a couple of missing kernel-doc lines
libnvdimm, dax: fix 1GB-aligned namespaces vs physical misalignment
libnvdimm, pfn: fix start_pad handling for aligned namespaces
acpi, nfit: fix health event notification
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* acpi-cppc:
ACPI: CPPC: remove initial assignment of pcc_ss_data
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The commit f6f828513290 ("pstore: pass allocated memory region back to
caller") changed the check of the return value from erst_read() in
erst_reader() in the following way:
if (len == -ENOENT)
goto skip;
- else if (len < 0) {
- rc = -1;
+ else if (len < sizeof(*rcd)) {
+ rc = -EIO;
goto out;
This introduced another bug: since the comparison with sizeof() is
cast to unsigned, a negative len value doesn't hit any longer.
As a result, when an error is returned from erst_read(), the code
falls through, and it may eventually lead to some weird thing like
memory corruption.
This patch adds the negative error value check more explicitly for
addressing the issue.
Fixes: f6f828513290 (pstore: pass allocated memory region back to caller)
Cc: All applicable <stable@vger.kernel.org>
Tested-by: Jerry Tang <jtang@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The initialization of pcc_ss_data from pcc_data[pcc_ss_id] before
pcc_ss_id is being range checked could lead to an out-of-bounds array
read. This very same initialization is also being performed after
the range check on pcc_ss_id, so we can just remove this problematic
and also redundant assignment to fix the issue.
Detected by cppcheck:
warning: Value stored to 'pcc_ss_data' during its initialization is never
read
Fixes: 85b1407bf6d2 (ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Middle-layer code doing suspend-time optimizations for devices with
the DPM_FLAG_SMART_SUSPEND flag set (currently, the PCI bus type and
the ACPI PM domain) needs to make the core skip ->thaw_early and
->thaw callbacks for those devices in some cases and it sets the
power.direct_complete flag for them for this purpose.
However, it turns out that setting power.direct_complete outside of
the PM core is a bad idea as it triggers an excess invocation of
pm_runtime_enable() in device_resume().
For this reason, provide a helper to clear power.is_late_suspended
and power.is_suspended to be invoked by the middle-layer code in
question instead of setting power.direct_complete and make that code
call the new helper.
Fixes: c4b65157aeef (PCI / PM: Take SMART_SUSPEND driver flag into account)
Fixes: 05087360fd7a (ACPI / PM: Take SMART_SUSPEND driver flag into account)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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Default value of pcc_subspace_idx is -1.
Make sure to check pcc_subspace_idx before using the same as array index.
This will avoid following KASAN warnings too.
[ 15.113449] ==================================================================
[ 15.116983] BUG: KASAN: global-out-of-bounds in cppc_get_perf_caps+0xf3/0x3b0
[ 15.116983] Read of size 8 at addr ffffffffb9a5c0d8 by task swapper/0/1
[ 15.116983] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc2+ #2
[ 15.116983] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.2.8 01/26/2016
[ 15.116983] Call Trace:
[ 15.116983] dump_stack+0x7c/0xbb
[ 15.116983] print_address_description+0x1df/0x290
[ 15.116983] kasan_report+0x28a/0x370
[ 15.116983] ? cppc_get_perf_caps+0xf3/0x3b0
[ 15.116983] cppc_get_perf_caps+0xf3/0x3b0
[ 15.116983] ? cpc_read+0x210/0x210
[ 15.116983] ? __rdmsr_on_cpu+0x90/0x90
[ 15.116983] ? rdmsrl_on_cpu+0xa9/0xe0
[ 15.116983] ? rdmsr_on_cpu+0x100/0x100
[ 15.116983] ? wrmsrl_on_cpu+0x9c/0xd0
[ 15.116983] ? wrmsrl_on_cpu+0x9c/0xd0
[ 15.116983] ? wrmsr_on_cpu+0xe0/0xe0
[ 15.116983] __intel_pstate_cpu_init.part.16+0x3a2/0x530
[ 15.116983] ? intel_pstate_init_cpu+0x197/0x390
[ 15.116983] ? show_no_turbo+0xe0/0xe0
[ 15.116983] ? __lockdep_init_map+0xa0/0x290
[ 15.116983] intel_pstate_cpu_init+0x30/0x60
[ 15.116983] cpufreq_online+0x155/0xac0
[ 15.116983] cpufreq_add_dev+0x9b/0xb0
[ 15.116983] subsys_interface_register+0x1ae/0x290
[ 15.116983] ? bus_unregister_notifier+0x40/0x40
[ 15.116983] ? mark_held_locks+0x83/0xb0
[ 15.116983] ? _raw_write_unlock_irqrestore+0x32/0x60
[ 15.116983] ? intel_pstate_setup+0xc/0x104
[ 15.116983] ? intel_pstate_setup+0xc/0x104
[ 15.116983] ? cpufreq_register_driver+0x1ce/0x2b0
[ 15.116983] cpufreq_register_driver+0x1ce/0x2b0
[ 15.116983] ? intel_pstate_setup+0x104/0x104
[ 15.116983] intel_pstate_register_driver+0x3a/0xa0
[ 15.116983] intel_pstate_init+0x3c4/0x434
[ 15.116983] ? intel_pstate_setup+0x104/0x104
[ 15.116983] ? intel_pstate_setup+0x104/0x104
[ 15.116983] do_one_initcall+0x9c/0x206
[ 15.116983] ? parameq+0xa0/0xa0
[ 15.116983] ? initcall_blacklisted+0x150/0x150
[ 15.116983] ? lock_downgrade+0x2c0/0x2c0
[ 15.116983] kernel_init_freeable+0x327/0x3f0
[ 15.116983] ? start_kernel+0x612/0x612
[ 15.116983] ? _raw_spin_unlock_irq+0x29/0x40
[ 15.116983] ? finish_task_switch+0xdd/0x320
[ 15.116983] ? finish_task_switch+0x8e/0x320
[ 15.116983] ? rest_init+0xd0/0xd0
[ 15.116983] kernel_init+0xf/0x11a
[ 15.116983] ? rest_init+0xd0/0xd0
[ 15.116983] ret_from_fork+0x24/0x30
[ 15.116983] The buggy address belongs to the variable:
[ 15.116983] __key.36299+0x38/0x40
[ 15.116983] Memory state around the buggy address:
[ 15.116983] ffffffffb9a5bf80: fa fa fa fa 00 fa fa fa fa fa fa fa 00 fa fa fa
[ 15.116983] ffffffffb9a5c000: fa fa fa fa 00 fa fa fa fa fa fa fa 00 fa fa fa
[ 15.116983] >ffffffffb9a5c080: fa fa fa fa 00 fa fa fa fa fa fa fa 00 00 00 00
[ 15.116983] ^
[ 15.116983] ffffffffb9a5c100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 15.116983] ffffffffb9a5c180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 15.116983] ==================================================================
Fixes: 85b1407bf6d2 (ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs)
Reported-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: George Cherian <george.cherian@cavium.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Integration testing with a BIOS that generates injected health event
notifications fails to communicate those events to userspace. The nfit
driver neglects to link the ACPI DIMM device with the necessary driver
data so acpi_nvdimm_notify() fails this lookup:
nfit_mem = dev_get_drvdata(dev);
if (nfit_mem && nfit_mem->flags_attr)
sysfs_notify_dirent(nfit_mem->flags_attr);
Add the necessary linkage when installing the notification handler and
clean it up when the nfit driver instance is torn down.
Cc: <stable@vger.kernel.org>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Fixes: ba9c8dd3c222 ("acpi, nfit: add dimm device notification support")
Reported-by: Daniel Osawa <daniel.k.osawa@intel.com>
Tested-by: Daniel Osawa <daniel.k.osawa@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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* acpi-ec:
ACPI / EC: Fix regression related to PM ops support in ECDT device
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On platforms (ASUS X550ZE and possibly all ASUS X series) with valid ECDT
EC but invalid DSDT EC, EC PM ops won't be invoked as ECDT EC is not an
ACPI device. Thus the following commit actually removed post-resume
acpi_ec_enable_event() invocation for such platforms, and triggered a
regression on them that after being resumed, EC (actually should be ECDT)
driver stops handling EC events:
Commit: c2b46d679b30c5c0d7eb47a21085943242bdd8dc
Subject: ACPI / EC: Add PM operations to improve event handling for resume process
Notice that the root cause actually is "ECDT is not an ACPI device" rather
than "the timing of acpi_ec_enable_event() invocation", this patch fixes
this issue by enumerating ECDT EC as an ACPI device. Due to the existence
of the noirq stage, the ability of tuning the timing of
acpi_ec_enable_event() invocation is still meaningful.
This patch is a little bit different from the posted fix by moving
acpi_config_boot_ec() from acpi_ec_ecdt_start() to acpi_ec_add() to make
sure that EC event handling won't be stopped as long as the ACPI EC driver
is bound. Thus the following sequence shouldn't disable EC event handling:
unbind,suspend,resume,bind.
Fixes: c2b46d679b30 (ACPI / EC: Add PM operations to improve event handling for resume process)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196847
Reported-by: Luya Tshimbalanga <luya@fedoraproject.org>
Tested-by: Luya Tshimbalanga <luya@fedoraproject.org>
Cc: 4.9+ <stable@vger.kernel.org> # 4.9+
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Most Bay and Cherry Trail devices use a generic DSDT with all possible
peripheral devices present in the DSDT, with their _STA returning 0x00 or
0x0f based on AML variables which describe what is actually present on
the board.
Since ACPI device objects with a 0x00 status (not present) still get an
entry under /sys/bus/acpi/devices, and those entry had an acpi:PNPID
modalias, userspace would end up loading modules for non present hardware.
This commit fixes this by leaving the modalias empty for non present
devices. This results in 10 modules less being loaded with a generic
distro kernel config on my Cherry Trail test-device (a GPD pocket).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This fixes a possible memory leak in an error code path in one of the
utility routines (Xiongfeng Wang)"
* tag 'acpi-fix-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / utils: Fix memory leak in acpi_evaluate_reference() error path
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm and dax updates from Dan Williams:
"Save for a few late fixes, all of these commits have shipped in -next
releases since before the merge window opened, and 0day has given a
build success notification.
The ext4 touches came from Jan, and the xfs touches have Darrick's
reviewed-by. An xfstest for the MAP_SYNC feature has been through
a few round of reviews and is on track to be merged.
- Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable
'userspace flush' of persistent memory updates via filesystem-dax
mappings. It arranges for any filesystem metadata updates that may
be required to satisfy a write fault to also be flushed ("on disk")
before the kernel returns to userspace from the fault handler.
Effectively every write-fault that dirties metadata completes an
fsync() before returning from the fault handler. The new
MAP_SHARED_VALIDATE mapping type guarantees that the MAP_SYNC flag
is validated as supported by the filesystem's ->mmap() file
operation.
- Add support for the standard ACPI 6.2 label access methods that
replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods.
This enables interoperability with environments that only implement
the standardized methods.
- Add support for the ACPI 6.2 NVDIMM media error injection methods.
- Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for
latch last shutdown status, firmware update, SMART error injection,
and SMART alarm threshold control.
- Cleanup physical address information disclosures to be root-only.
- Fix revalidation of the DIMM "locked label area" status to support
dynamic unlock of the label area.
- Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA
(system-physical-address) command and error injection commands.
Acknowledgements that came after the commits were pushed to -next:
- 957ac8c421ad ("dax: fix PMD faults on zero-length files"):
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
- a39e596baa07 ("xfs: support for synchronous DAX faults") and
7b565c9f965b ("xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()")
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>"
* tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (49 commits)
acpi, nfit: add 'Enable Latch System Shutdown Status' command support
dax: fix general protection fault in dax_alloc_inode
dax: fix PMD faults on zero-length files
dax: stop requiring a live device for dax_flush()
brd: remove dax support
dax: quiet bdev_dax_supported()
fs, dax: unify IOMAP_F_DIRTY read vs write handling policy in the dax core
tools/testing/nvdimm: unit test clear-error commands
acpi, nfit: validate commands against the device type
tools/testing/nvdimm: stricter bounds checking for error injection commands
xfs: support for synchronous DAX faults
xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()
ext4: Support for synchronous DAX faults
ext4: Simplify error handling in ext4_dax_huge_fault()
dax: Implement dax_finish_sync_fault()
dax, iomap: Add support for synchronous faults
mm: Define MAP_SYNC and VM_SYNC flags
dax: Allow tuning whether dax_insert_mapping_entry() dirties entry
dax: Allow dax_iomap_fault() to return pfn
dax: Fix comment describing dax_iomap_fault()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New drivers:
- Add support for Cherry Trail Dollar Cove TI PMIC
- Add support for Add Spreadtrum SC27xx series PMICs
New device support:
- Add support Regulator to axp20x
New functionality:
- Add DT support; aspeed-scu sc27xx-pmic
- Add power saving support; rts5249
Fix-ups:
- DT clean-up/rework; tps65217, max77693, iproc-cdru, iproc-mhb, tps65218
- Staticise/constify; stw481x
- Use new succinct IRQ API; fsl-imx25-tsadc
- Kconfig fix-ups; MFD_TPS65218
- Identify SPI method; lpc_ich
- Use managed resources (devm_*) calls; ssbi
- Remove unused/obsolete code/documentation; mc13xxx
Bug fixes:
- Fix typo in MAINTAINERS
- Fix error handling; mxs-lradc
- Clean-up IRQs on .remove; fsl-imx25-tsadc"
* tag 'mfd-next-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (21 commits)
dt-bindings: mfd: mc13xxx: Remove obsolete property
mfd: axp20x: Add axp20x-regulator cell for AXP813
mfd: Add Spreadtrum SC27xx series PMICs driver
dt-bindings: mfd: Add Spreadtrum SC27xx PMIC documentation
mfd: ssbi: Use devm_of_platform_populate()
mfd: fsl-imx25: Clean up irq settings during removal
mfd: mxs-lradc: Fix error handling in mxs_lradc_probe()
mfd: lpc_ich: Avoton/Rangeley uses SPI_BYT method
mfd: tps65218: Introduce dependency on CONFIG_OF
mfd: tps65218: Correct the config description
MAINTAINERS: Fix Dialog search term for watchdog binding file
mfd: fsl-imx25: Set irq handler and data in one go
mfd: rts5249: Add support for RTS5250S power saving
ACPI / PMIC: Add opregion driver for Intel Dollar Cove TI PMIC
mfd: Add support for Cherry Trail Dollar Cove TI PMIC
syscon: dt-bindings: Add binding document for iProc MHB block
syscon: dt-bindings: Add binding doc for Broadcom iProc CDRU
mfd: max77693: Add muic of_compatible in mfd_cell
mfd: stw481x: Make three arrays static const, reduces object code size
mfd: tps65217: Introduce dependency on CONFIG_OF
...
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|
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The NVDIMM_FAMILY_INTEL 'Enable Latch System Shutdown Status' command
indicates to the platform that system software has acknowledged the most
recent unsafe shutdown status.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
|
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
"Summary of modules changes for the 4.15 merge window:
- treewide module_param_call() cleanup, fix up set/get function
prototype mismatches, from Kees Cook
- minor code cleanups"
* tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Do not paper over type mismatches in module_param_call()
treewide: Fix function prototypes for module_param_call()
module: Prepare to convert all module_param_call() prototypes
kernel/module: Delete an error message for a failed memory allocation in add_module_usage()
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"The big highlight is support for the Scalable Vector Extension (SVE)
which required extensive ABI work to ensure we don't break existing
applications by blowing away their signal stack with the rather large
new vector context (<= 2 kbit per vector register). There's further
work to be done optimising things like exception return, but the ABI
is solid now.
Much of the line count comes from some new PMU drivers we have, but
they're pretty self-contained and I suspect we'll have more of them in
future.
Plenty of acronym soup here:
- initial support for the Scalable Vector Extension (SVE)
- improved handling for SError interrupts (required to handle RAS
events)
- enable GCC support for 128-bit integer types
- remove kernel text addresses from backtraces and register dumps
- use of WFE to implement long delay()s
- ACPI IORT updates from Lorenzo Pieralisi
- perf PMU driver for the Statistical Profiling Extension (SPE)
- perf PMU driver for Hisilicon's system PMUs
- misc cleanups and non-critical fixes"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (97 commits)
arm64: Make ARMV8_DEPRECATED depend on SYSCTL
arm64: Implement __lshrti3 library function
arm64: support __int128 on gcc 5+
arm64/sve: Add documentation
arm64/sve: Detect SVE and activate runtime support
arm64/sve: KVM: Hide SVE from CPU features exposed to guests
arm64/sve: KVM: Treat guest SVE use as undefined instruction execution
arm64/sve: KVM: Prevent guests from using SVE
arm64/sve: Add sysctl to set the default vector length for new processes
arm64/sve: Add prctl controls for userspace vector length management
arm64/sve: ptrace and ELF coredump support
arm64/sve: Preserve SVE registers around EFI runtime service calls
arm64/sve: Preserve SVE registers around kernel-mode NEON use
arm64/sve: Probe SVE capabilities and usable vector lengths
arm64: cpufeature: Move sys_caps_initialised declarations
arm64/sve: Backend logic for setting the vector length
arm64/sve: Signal handling support
arm64/sve: Support vector length resetting for new processes
arm64/sve: Core task context handling
arm64/sve: Low-level CPU setup
...
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"This contains two bigger than usual tree-wide changes this time. They
all have proper acks, caused no merge conflicts in linux-next where
they have been for a while. They are namely:
- to-gpiod conversion of the i2c-gpio driver and its users (touching
arch/* and drivers/mfd/*)
- adding a sbs-manager based on I2C core updates to SMBus alerts
(touching drivers/power/*)
Other notable changes:
- i2c_boardinfo can now carry a dev_name to be used when the device
is created. This is because some devices in ACPI world need fixed
names to find the regulators.
- the designware driver got a long discussed overhaul of its PM
handling. img-scb and davinci got PM support, too.
- at24 driver has way better OF support. And it has a new maintainer.
Thanks Bartosz for stepping up!
The rest is regular driver updates and fixes"
* 'i2c/for-4.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (55 commits)
ARM: sa1100: simpad: Correct I2C GPIO offsets
i2c: aspeed: Deassert reset in probe
eeprom: at24: Add OF device ID table
MAINTAINERS: new maintainer for AT24 driver
i2c: nuc900: remove platform_data, too
i2c: thunderx: Remove duplicate NULL check
i2c: taos-evm: Remove duplicate NULL check
i2c: Make i2c_unregister_device() NULL-aware
i2c: xgene-slimpro: Support v2
i2c: mpc: remove useless variable initialization
i2c: omap: Trigger bus recovery in lockup case
i2c: gpio: Add support for named gpios in DT
dt-bindings: i2c: i2c-gpio: Add support for named gpios
i2c: gpio: Local vars in probe
i2c: gpio: Augment all boardfiles to use open drain
i2c: gpio: Enforce open drain through gpiolib
gpio: Make it possible for consumers to enforce open drain
i2c: gpio: Convert to use descriptors
power: supply: sbs-message: fix some code style issues
power: supply: sbs-battery: remove unchecked return var
...
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Pull configfs updates from Christoph Hellwig:
"A couple of configfs cleanups:
- proper use of the bool type (Thomas Meyer)
- constification of struct config_item_type (Bhumika Goyal)"
* tag 'configfs-for-4.15' of git://git.infradead.org/users/hch/configfs:
RDMA/cma: make config_item_type const
stm class: make config_item_type const
ACPI: configfs: make config_item_type const
nvmet: make config_item_type const
usb: gadget: configfs: make config_item_type const
PCI: endpoint: make config_item_type const
iio: make function argument and some structures const
usb: gadget: make config_item_type structures const
dlm: make config_item_type const
netconsole: make config_item_type const
nullb: make config_item_type const
ocfs2/cluster: make config_item_type const
target: make config_item_type const
configfs: make ci_type field, some pointers and function arguments const
configfs: make config_item_type const
configfs: Fix bool initialization/comparison
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When package.count is larger than ACPI_MAX_HANDLES, buffer.pointer is
not freed before the function returns AE_NO_MEMORY. Fix this possible
memory leak by kfree'ing it.
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big tty/serial driver pull request for 4.15-rc1.
Lots of serial driver updates in here, some small vt cleanups, and a
raft of SPDX and license boilerplate cleanups, messing up the diffstat
a bit.
Nothing major, with no realy functional changes except better hardware
support for some platforms.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (110 commits)
tty: ehv_bytechan: fix spelling mistake
tty: serial: meson: allow baud-rates lower than 9600
serial: 8250_fintek: Fix crash with baud rate B0
serial: 8250_fintek: Disable delays for ports != 0
serial: 8250_fintek: Return -EINVAL on invalid configuration
tty: Remove redundant license text
tty: serdev: Remove redundant license text
tty: hvc: Remove redundant license text
tty: serial: Remove redundant license text
tty: add SPDX identifiers to all remaining files in drivers/tty/
tty: serial: jsm: remove redundant pointer ts
tty: serial: jsm: add space before the open parenthesis '('
tty: serial: jsm: fix coding style
tty: serial: jsm: delete space between function name and '('
tty: serial: jsm: add blank line after declarations
tty: serial: jsm: change the type of local variable
tty: serial: imx: remove dead code imx_dma_rxint
tty: serial: imx: disable ageing timer interrupt if dma in use
serial: 8250: fix potential deadlock in rs485-mode
serial: m32r_sio: Drop redundant .data assignment
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update ACPICA to upstream revision 20170831, fix APEI to use the
fixmap instead of ioremap_page_range(), add an operation region driver
for TI PMIC TPS68470, add support for PCC subspace IDs to the ACPI
CPPC driver, fix a few assorted issues and clean up some code.
Specifics:
- Update the ACPICA code to upstream revision 20170831 including
* PDTT table header support (Bob Moore).
* Cleanup and extension of internal string-to-integer conversion
functions (Bob Moore).
* Support for 64-bit hardware accesses (Lv Zheng).
* ACPI PM Timer code adjustment to deal with 64-bit return values
of acpi_hw_read() (Bob Moore).
* Support for deferred table verification in acpiexec (Lv Zheng).
- Fix APEI to use the fixmap instead of ioremap_page_range() which
cannot work correctly the way the code in there attempted to use it
and drop some code that's not necessary any more after that change
(James Morse).
- Clean up the APEI support code and make it use 64-bit timestamps
(Arnd Bergmann, Dongjiu Geng, Jan Beulich).
- Add operation region driver for TI PMIC TPS68470 (Rajmohan Mani).
- Add support for PCC subspace IDs to the ACPI CPPC driver (George
Cherian).
- Fix an ACPI EC driver regression related to the handling of EC
events during the "noirq" phases of system suspend/resume (Lv
Zheng).
- Delay the initialization of the lid state in the ACPI button driver
to fix issues appearing on some systems (Hans de Goede).
- Extend the KIOX000A "device always present" quirk to cover all
affected BIOS versions (Hans de Goede).
- Clean up some code in the ACPI core and drivers (Colin Ian King,
Gustavo Silva)"
* tag 'acpi-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits)
ACPI: Mark expected switch fall-throughs
ACPI / LPSS: Remove redundant initialization of clk
ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs
mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
ACPI / sysfs: Make function param_set_trace_method_name() static
ACPI / button: Delay acpi_lid_initialize_state() until first user space open
ACPI / EC: Fix regression related to triggering source of EC event handling
APEI / ERST: use 64-bit timestamps
ACPI / APEI: Remove arch_apei_flush_tlb_one()
arm64: mm: Remove arch_apei_flush_tlb_one()
ACPI / APEI: Remove ghes_ioremap_area
ACPI / APEI: Replace ioremap_page_range() with fixmap
ACPI / APEI: remove the unused dead-code for SEA/NMI notification type
ACPI / x86: Extend KIOX000A quirk to cover all affected BIOS versions
ACPI / APEI: adjust a local variable type in ghes_ioremap_pfn_irq()
ACPICA: Update version to 20170831
ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read
ACPICA: String conversions: Update to add new behaviors
ACPICA: String conversions: Cleanup/format comments. No functional changes
ACPICA: Restructure/cleanup all string-to-integer conversion functions
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"There are no real big ticket items here this time.
The most noticeable change is probably the relocation of the OPP
(Operating Performance Points) framework to its own directory under
drivers/ as it has grown big enough for that. Also Viresh is now going
to maintain it and send pull requests for it to me, so you will see
this change in the git history going forward (but still not right
now).
Another noticeable set of changes is the modifications of the PM core,
the PCI subsystem and the ACPI PM domain to allow of more integration
between system-wide suspend/resume and runtime PM. For now it's just a
way to avoid resuming devices from runtime suspend unnecessarily
during system suspend (if the driver sets a flag to indicate its
readiness for that) and in the works is an analogous mechanism to
allow devices to stay suspended after system resume.
In addition to that, we have some changes related to supporting
frequency-invariant CPU utilization metrics in the scheduler and in
the schedutil cpufreq governor on ARM and changes to add support for
device performance states to the generic power domains (genpd)
framework.
The rest is mostly fixes and cleanups of various sorts.
Specifics:
- Relocate the OPP (Operating Performance Points) framework to its
own directory under drivers/ and add support for power domain
performance states to it (Viresh Kumar).
- Modify the PM core, the PCI bus type and the ACPI PM domain to
support power management driver flags allowing device drivers to
specify their capabilities and preferences regarding the handling
of devices with enabled runtime PM during system suspend/resume and
clean up that code somewhat (Rafael Wysocki, Ulf Hansson).
- Add frequency-invariant accounting support to the task scheduler on
ARM and ARM64 (Dietmar Eggemann).
- Fix PM QoS device resume latency framework to prevent "no
restriction" requests from overriding requests with specific
requirements and drop the confusing PM_QOS_FLAG_REMOTE_WAKEUP
device PM QoS flag (Rafael Wysocki).
- Drop legacy class suspend/resume operations from the PM core and
drop legacy bus type suspend and resume callbacks from ARM/locomo
(Rafael Wysocki).
- Add min/max frequency support to devfreq and clean it up somewhat
(Chanwoo Choi).
- Rework wakeup support in the generic power domains (genpd)
framework and update some of its users accordingly (Geert
Uytterhoeven).
- Convert timers in the PM core to use timer_setup() (Kees Cook).
- Add support for exposing the SLP_S0 (Low Power S0 Idle) residency
counter based on the LPIT ACPI table on Intel platforms (Srinivas
Pandruvada).
- Add per-CPU PM QoS resume latency support to the ladder cpuidle
governor (Ramesh Thomas).
- Fix a deadlock between the wakeup notify handler and the notifier
removal in the ACPI core (Ville Syrjälä).
- Fix a cpufreq schedutil governor issue causing it to use stale
cached frequency values sometimes (Viresh Kumar).
- Fix an issue in the system suspend core support code causing wakeup
events detection to fail in some cases (Rajat Jain).
- Fix the generic power domains (genpd) framework to prevent the PM
core from using the direct-complete optimization with it as that is
guaranteed to fail (Ulf Hansson).
- Fix a minor issue in the cpuidle core and clean it up a bit (Gaurav
Jindal, Nicholas Piggin).
- Fix and clean up the intel_idle and ARM cpuidle drivers (Jason
Baron, Len Brown, Leo Yan).
- Fix a couple of minor issues in the OPP framework and clean it up
(Arvind Yadav, Fabio Estevam, Sudeep Holla, Tobias Jordan).
- Fix and clean up some cpufreq drivers and fix a minor issue in the
cpufreq statistics code (Arvind Yadav, Bhumika Goyal, Fabio
Estevam, Gautham Shenoy, Gustavo Silva, Marek Szyprowski, Masahiro
Yamada, Robert Jarzmik, Zumeng Chen).
- Fix minor issues in the system suspend and hibernation core, in
power management documentation and in the AVS (Adaptive Voltage
Scaling) framework (Helge Deller, Himanshu Jha, Joe Perches, Rafael
Wysocki).
- Fix some issues in the cpupower utility and document that Shuah
Khan is going to maintain it going forward (Prarit Bhargava, Shuah
Khan)"
* tag 'pm-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (88 commits)
tools/power/cpupower: add libcpupower.so.0.0.1 to .gitignore
tools/power/cpupower: Add 64 bit library detection
intel_idle: Graceful probe failure when MWAIT is disabled
cpufreq: schedutil: Reset cached_raw_freq when not in sync with next_freq
freezer: Fix typo in freezable_schedule_timeout() comment
PM / s2idle: Clear the events_check_enabled flag
cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZE
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
cpufreq: arm_big_little: make function arguments and structure pointer const
cpuidle: Avoid assignment in if () argument
cpuidle: Clean up cpuidle_enable_device() error handling a bit
ACPI / PM: Fix acpi_pm_notifier_lock vs flush_workqueue() deadlock
PM / Domains: Fix genpd to deal with drivers returning 1 from ->prepare()
cpuidle: ladder: Add per CPU PM QoS resume latency support
PM / QoS: Fix device resume latency framework
PM / domains: Rework governor code to be more consistent
PM / Domains: Remove gpd_dev_ops.active_wakeup() callback
soc: rockchip: power-domain: Use GENPD_FLAG_ACTIVE_WAKEUP
soc: mediatek: Use GENPD_FLAG_ACTIVE_WAKEUP
ARM: shmobile: pm-rmobile: Use GENPD_FLAG_ACTIVE_WAKEUP
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Yet another big pile of changes:
- More year 2038 work from Arnd slowly reaching the point where we
need to think about the syscalls themself.
- A new timer function which allows to conditionally (re)arm a timer
only when it's either not running or the new expiry time is sooner
than the armed expiry time. This allows to use a single timer for
multiple timeout requirements w/o caring about the first expiry
time at the call site.
- A new NMI safe accessor to clock real time for the printk timestamp
work. Can be used by tracing, perf as well if required.
- A large number of timer setup conversions from Kees which got
collected here because either maintainers requested so or they
simply got ignored. As Kees pointed out already there are a few
trivial merge conflicts and some redundant commits which was
unavoidable due to the size of this conversion effort.
- Avoid a redundant iteration in the timer wheel softirq processing.
- Provide a mechanism to treat RTC implementations depending on their
hardware properties, i.e. don't inflict the write at the 0.5
seconds boundary which originates from the PC CMOS RTC to all RTCs.
No functional change as drivers need to be updated separately.
- The usual small updates to core code clocksource drivers. Nothing
really exciting"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (111 commits)
timers: Add a function to start/reduce a timer
pstore: Use ktime_get_real_fast_ns() instead of __getnstimeofday()
timer: Prepare to change all DEFINE_TIMER() callbacks
netfilter: ipvs: Convert timers to use timer_setup()
scsi: qla2xxx: Convert timers to use timer_setup()
block/aoe: discover_timer: Convert timers to use timer_setup()
ide: Convert timers to use timer_setup()
drbd: Convert timers to use timer_setup()
mailbox: Convert timers to use timer_setup()
crypto: Convert timers to use timer_setup()
drivers/pcmcia: omap1: Fix error in automated timer conversion
ARM: footbridge: Fix typo in timer conversion
drivers/sgi-xp: Convert timers to use timer_setup()
drivers/pcmcia: Convert timers to use timer_setup()
drivers/memstick: Convert timers to use timer_setup()
drivers/macintosh: Convert timers to use timer_setup()
hwrng/xgene-rng: Convert timers to use timer_setup()
auxdisplay: Convert timers to use timer_setup()
sparc/led: Convert timers to use timer_setup()
mips: ip22/32: Convert timers to use timer_setup()
...
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* pm-core:
ACPI / PM: Take SMART_SUSPEND driver flag into account
PCI / PM: Take SMART_SUSPEND driver flag into account
PCI / PM: Drop unnecessary invocations of pcibios_pm_ops callbacks
PM / core: Add SMART_SUSPEND driver flag
PCI / PM: Use the NEVER_SKIP driver flag
PM / core: Add NEVER_SKIP and SMART_PREPARE driver flags
PM / core: Convert timers to use timer_setup()
PM / core: Fix kerneldoc comments of four functions
PM / core: Drop legacy class suspend/resume operations
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* acpi-pm:
ACPI / PM: Fix acpi_pm_notifier_lock vs flush_workqueue() deadlock
ACPI / LPSS: Consolidate runtime PM and system sleep handling
ACPI / PM: Combine device suspend routines
ACPI / LPIT: Add Low Power Idle Table (LPIT) support
ACPI / PM: Split code validating need for runtime resume in ->prepare()
ACPI / PM: Restore acpi_subsys_complete()
ACPI / PM: Combine two identical device resume routines
ACPI / PM: Remove stale function header
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'acpi-cppc'
* acpi-ec:
ACPI / EC: Fix regression related to triggering source of EC event handling
* acpi-button:
ACPI / button: Delay acpi_lid_initialize_state() until first user space open
* acpi-sysfs:
ACPI / sysfs: Make function param_set_trace_method_name() static
* acpi-lpss:
ACPI / LPSS: Remove redundant initialization of clk
* acpi-cppc:
ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs
mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
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* acpi-pmic:
ACPI / PMIC: Add TI PMIC TPS68470 operation region driver
* acpi-apei:
APEI / ERST: use 64-bit timestamps
ACPI / APEI: Remove arch_apei_flush_tlb_one()
arm64: mm: Remove arch_apei_flush_tlb_one()
ACPI / APEI: Remove ghes_ioremap_area
ACPI / APEI: Replace ioremap_page_range() with fixmap
ACPI / APEI: remove the unused dead-code for SEA/NMI notification type
ACPI / APEI: adjust a local variable type in ghes_ioremap_pfn_irq()
* acpi-x86:
ACPI / x86: Extend KIOX000A quirk to cover all affected BIOS versions
|
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* acpica:
ACPICA: Update version to 20170831
ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read
ACPICA: String conversions: Update to add new behaviors
ACPICA: String conversions: Cleanup/format comments. No functional changes
ACPICA: Restructure/cleanup all string-to-integer conversion functions
ACPICA: Header support for the PDTT ACPI table
ACPICA: acpiexec: Add testability of deferred table verification
ACPICA: Hardware: Enable 64-bit support of hardware accesses
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* pm-qos:
PM / QoS: Fix device resume latency framework
PM / QoS: Drop PM_QOS_FLAG_REMOTE_WAKEUP
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Fix occasions in acpi_nfit_ctl where we check the command type without
validating whether we are parsing dimm vs bus level commands. Where the
command numbers alias between dimms and bus we can make the wrong
assumption just checking the raw command number. For example, with a
simple nfit_test mock up of the clear-error command we trigger the
following:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000094
IP: acpi_nfit_ctl+0x29b/0x930 [nfit]
[..]
Call Trace:
nfit_test_probe+0xb85/0xc09 [nfit_test]
platform_drv_probe+0x3b/0xa0
? platform_drv_probe+0x3b/0xa0
driver_probe_device+0x29c/0x450
? test_alloc+0x180/0x180 [nfit_test]
__driver_attach+0xe3/0xf0
? driver_probe_device+0x450/0x450
bus_for_each_dev+0x73/0xc0
driver_attach+0x1e/0x20
bus_add_driver+0x173/0x270
driver_register+0x60/0xe0
__platform_driver_register+0x36/0x40
nfit_test_init+0x2a1/0x1000 [nfit_test]
Fixes: 4b27db7e26cd ("acpi, nfit: add support for the _LSI, _LSR, and...")
Reported-by: Vishal Verma <vishal.l.verma@intel.com>
Tested-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
|
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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
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The pointer clk is being initialized to ERR_PTR(-ENODEV) however
this value is never read before it is set to clk_data->clk. Thus
the initialization is redundant and can be mored.
Cleans up clang warning:
Value stored to 'clk' during its initialization is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Based on ACPI 6.2 Section 8.4.7.1.9 If the PCC register space is used,
all PCC registers, for all processors in the same performance domain
(as defined by _PSD), must be defined to be in the same subspace.
Based on Section 14.1 of ACPI specification, it is possible to have a
maximum of 256 PCC subspace IDs. Add support of multiple PCC subspace
ID instead of using a single global pcc_data structure.
While at that, fix the time_delta check in send_pcc_cmd() so that
last_mpar_reset and mpar_count are initialized properly.
Signed-off-by: George Cherian <george.cherian@cavium.com>
Reviewed-by: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The function param_set_trace_method_name is local to the source and does
not need to be in global scope, so make it static.
Cleans up sparse warning:
symbol 'param_set_trace_method_name' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPI _LID methods may depend on OpRegions and do not always handle
handlers for those OpRegions not being present properly e.g. :
Method (_LID, 0, NotSerialized) // _LID: Lid Status
{
If ((^^I2C5.PMI1.AVBL == One) && (^^GPO2.AVBL == One))
{
Return (^^GPO2.LPOL) /* \_SB_.GPO2.LPOL */
}
}
Note the missing Return (1) when either of the OpRegions is not available,
this causes (in this case) a report of the lid-switch being closed,
which causes userspace to do an immediate suspend at boot.
This commit delays getting the initial state and thus calling _LID for
the first time until userspace opens the /dev/input/event# node. This
ensures that all drivers will have had a chance to load and registerer
their OpRegions before the first _LID call, fixing this issue.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Originally the Samsung quirks removed by commit 4c237371 can be covered
by commit e923e8e7 and ec_freeze_events=Y mode. But commit 9c40f956
changed ec_freeze_events=Y back to N, making this problem re-surface.
Actually, if commit e923e8e7 is robust enough, we can freely change
ec_freeze_events mode, so this patch fixes the issue by improving
commit e923e8e7.
Related commits listed in the merged order:
Commit: e923e8e79e18fd6be9162f1be6b99a002e9df2cb
Subject: ACPI / EC: Fix an issue that SCI_EVT cannot be detected
after event is enabled
Commit: 4c237371f290d1ed3b2071dd43554362137b1cce
Subject: ACPI / EC: Remove old CLEAR_ON_RESUME quirk
Commit: 9c40f956ce9b331493347d1b3cb7e384f7dc0581
Subject: Revert "ACPI / EC: Enable event freeze mode..." to fix
a regression
This patch not only fixes the reported post-resume EC event triggering
source issue, but also fixes an unreported similar issue related to the
driver bind by adding EC event triggering source in ec_install_handlers().
Fixes: e923e8e79e18 (ACPI / EC: Fix an issue that SCI_EVT cannot be detected after event is enabled)
Fixes: 4c237371f290 (ACPI / EC: Remove old CLEAR_ON_RESUME quirk)
Fixes: 9c40f956ce9b (Revert "ACPI / EC: Enable event freeze mode..." to fix a regression)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196833
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-by: Alistair Hamilton <ahpatent@gmail.com>
Tested-by: Alistair Hamilton <ahpatent@gmail.com>
Cc: 4.11+ <stable@vger.kernel.org> # 4.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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32-bit timestamps are deprecated in the kernel, so we should not use
get_seconds(). In this case, the 'struct cper_record_header' structure
already contains a 64-bit field, so the only required change is to use
the safe ktime_get_real_seconds() interface as a replacement.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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acpi_remove_pm_notifier() ends up calling flush_workqueue() while
holding acpi_pm_notifier_lock, and that same lock is taken by
by the work via acpi_pm_notify_handler(). This can deadlock.
To fix the problem let's split the single lock into two: one to
protect the dev->wakeup between the work vs. add/remove, and
another one to handle notifier installation vs. removal.
After commit a1d14934ea4b "workqueue/lockdep: 'Fix' flush_work()
annotation" I was able to kill the machine (Intel Braswell)
very easily with 'powertop --auto-tune', runtime suspending i915,
and trying to wake it up via the USB keyboard. The cases when
it didn't die are presumably explained by lockdep getting disabled
by something else (cpu hotplug locking issues usually).
Fortunately I still got a lockdep report over netconsole
(trickling in very slowly), even though the machine was
otherwise practically dead:
[ 112.179806] ======================================================
[ 114.670858] WARNING: possible circular locking dependency detected
[ 117.155663] 4.13.0-rc6-bsw-bisect-00169-ga1d14934ea4b #119 Not tainted
[ 119.658101] ------------------------------------------------------
[ 121.310242] xhci_hcd 0000:00:14.0: xHCI host not responding to stop endpoint command.
[ 121.313294] xhci_hcd 0000:00:14.0: xHCI host controller not responding, assume dead
[ 121.313346] xhci_hcd 0000:00:14.0: HC died; cleaning up
[ 121.313485] usb 1-6: USB disconnect, device number 3
[ 121.313501] usb 1-6.2: USB disconnect, device number 4
[ 134.747383] kworker/0:2/47 is trying to acquire lock:
[ 137.220790] (acpi_pm_notifier_lock){+.+.}, at: [<ffffffff813cafdf>] acpi_pm_notify_handler+0x2f/0x80
[ 139.721524]
[ 139.721524] but task is already holding lock:
[ 144.672922] ((&dpc->work)){+.+.}, at: [<ffffffff8109ce90>] process_one_work+0x160/0x720
[ 147.184450]
[ 147.184450] which lock already depends on the new lock.
[ 147.184450]
[ 154.604711]
[ 154.604711] the existing dependency chain (in reverse order) is:
[ 159.447888]
[ 159.447888] -> #2 ((&dpc->work)){+.+.}:
[ 164.183486] __lock_acquire+0x1255/0x13f0
[ 166.504313] lock_acquire+0xb5/0x210
[ 168.778973] process_one_work+0x1b9/0x720
[ 171.030316] worker_thread+0x4c/0x440
[ 173.257184] kthread+0x154/0x190
[ 175.456143] ret_from_fork+0x27/0x40
[ 177.624348]
[ 177.624348] -> #1 ("kacpi_notify"){+.+.}:
[ 181.850351] __lock_acquire+0x1255/0x13f0
[ 183.941695] lock_acquire+0xb5/0x210
[ 186.046115] flush_workqueue+0xdd/0x510
[ 190.408153] acpi_os_wait_events_complete+0x31/0x40
[ 192.625303] acpi_remove_notify_handler+0x133/0x188
[ 194.820829] acpi_remove_pm_notifier+0x56/0x90
[ 196.989068] acpi_dev_pm_detach+0x5f/0xa0
[ 199.145866] dev_pm_domain_detach+0x27/0x30
[ 201.285614] i2c_device_probe+0x100/0x210
[ 203.411118] driver_probe_device+0x23e/0x310
[ 205.522425] __driver_attach+0xa3/0xb0
[ 207.634268] bus_for_each_dev+0x69/0xa0
[ 209.714797] driver_attach+0x1e/0x20
[ 211.778258] bus_add_driver+0x1bc/0x230
[ 213.837162] driver_register+0x60/0xe0
[ 215.868162] i2c_register_driver+0x42/0x70
[ 217.869551] 0xffffffffa0172017
[ 219.863009] do_one_initcall+0x45/0x170
[ 221.843863] do_init_module+0x5f/0x204
[ 223.817915] load_module+0x225b/0x29b0
[ 225.757234] SyS_finit_module+0xc6/0xd0
[ 227.661851] do_syscall_64+0x5c/0x120
[ 229.536819] return_from_SYSCALL_64+0x0/0x7a
[ 231.392444]
[ 231.392444] -> #0 (acpi_pm_notifier_lock){+.+.}:
[ 235.124914] check_prev_add+0x44e/0x8a0
[ 237.024795] __lock_acquire+0x1255/0x13f0
[ 238.937351] lock_acquire+0xb5/0x210
[ 240.840799] __mutex_lock+0x75/0x940
[ 242.709517] mutex_lock_nested+0x1c/0x20
[ 244.551478] acpi_pm_notify_handler+0x2f/0x80
[ 246.382052] acpi_ev_notify_dispatch+0x44/0x5c
[ 248.194412] acpi_os_execute_deferred+0x14/0x30
[ 250.003925] process_one_work+0x1ec/0x720
[ 251.803191] worker_thread+0x4c/0x440
[ 253.605307] kthread+0x154/0x190
[ 255.387498] ret_from_fork+0x27/0x40
[ 257.153175]
[ 257.153175] other info that might help us debug this:
[ 257.153175]
[ 262.324392] Chain exists of:
[ 262.324392] acpi_pm_notifier_lock --> "kacpi_notify" --> (&dpc->work)
[ 262.324392]
[ 267.391997] Possible unsafe locking scenario:
[ 267.391997]
[ 270.758262] CPU0 CPU1
[ 272.431713] ---- ----
[ 274.060756] lock((&dpc->work));
[ 275.646532] lock("kacpi_notify");
[ 277.260772] lock((&dpc->work));
[ 278.839146] lock(acpi_pm_notifier_lock);
[ 280.391902]
[ 280.391902] *** DEADLOCK ***
[ 280.391902]
[ 284.986385] 2 locks held by kworker/0:2/47:
[ 286.524895] #0: ("kacpi_notify"){+.+.}, at: [<ffffffff8109ce90>] process_one_work+0x160/0x720
[ 288.112927] #1: ((&dpc->work)){+.+.}, at: [<ffffffff8109ce90>] process_one_work+0x160/0x720
[ 289.727725]
Fixes: c072530f391e (ACPI / PM: Revork the handling of ACPI device wakeup notifications)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: 3.17+ <stable@vger.kernel.org> # 3.17+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Now that nothing is using the ghes_ioremap_area pages, rip them out.
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Tyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
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Replace ghes_io{re,un}map_pfn_{nmi,irq}()s use of ioremap_page_range()
with __set_fixmap() as ioremap_page_range() may sleep to allocate a new
level of page-table, even if its passed an existing final-address to
use in the mapping.
The GHES driver can only be enabled for architectures that select
HAVE_ACPI_APEI: Add fixmap entries to both x86 and arm64.
clear_fixmap() does the TLB invalidation in __set_fixmap() for arm64
and __set_pte_vaddr() for x86. In each case its the same as the
respective arch_apei_flush_tlb_one().
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Tyler Baicar <tbaicar@codeaurora.org>
Tested-by: Toshi Kani <toshi.kani@hpe.com>
[ For the arm64 bits: ]
Acked-by: Will Deacon <will.deacon@arm.com>
[ For the x86 bits: ]
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
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At least one Dell XPS13 9360 is reported to have serious issues with
the Low Power S0 Idle _DSM interface and since this machine model
generally can do ACPI S3 just fine, add a blacklist entry to disable
that interface for Dell XPS13 9360.
Fixes: 8110dd281e15 (ACPI / sleep: EC-based wakeup from suspend-to-idle on recent systems)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196907
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: 4.13+ <stable@vger.kernel.org> # 4.13+
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Make the ACPI PM domain take DPM_FLAG_SMART_SUSPEND into account in
its system suspend callbacks.
[Note that the pm_runtime_suspended() check in acpi_dev_needs_resume()
is an optimization, because if is not passed, all of the subsequent
checks may be skipped and some of them are much more overhead in
general.]
Also use the observation that if the device is in runtime suspend
at the beginning of the "late" phase of a system-wide suspend-like
transition, its state cannot change going forward (runtime PM is
disabled for it at that time) until the transition is over and the
subsequent system-wide PM callbacks should be skipped for it (as
they generally assume the device to not be suspended), so add
checks for that in acpi_subsys_suspend_late/noirq() and
acpi_subsys_freeze_late/noirq().
Moreover, if acpi_subsys_resume_noirq() is called during the
subsequent system-wide resume transition and if the device was left
in runtime suspend previously, its runtime PM status needs to be
changed to "active" as it is going to be put into the full-power
state going forward, so add a check for that too in there.
In turn, if acpi_subsys_thaw_noirq() runs after the device has been
left in runtime suspend, the subsequent "thaw" callbacks need
to be skipped for it (as they may not work correctly with a
suspended device), so set the power.direct_complete flag for the
device then to make the PM core skip those callbacks.
On top of the above, make the analogous changes in the acpi_lpss
driver that uses the ACPI PM domain callbacks.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Geert Uytterhoeven
Hans de Goede
Takashi Iwai
Dan Williams
Kai Heng Feng
Toshi Kani
Greg Kroah-Hartman
Linus Torvalds
Rafael J. Wysocki
Colin Ian King
George Cherian
Lv Zheng
Xiongfeng Wang
Gustavo A. R. Silva
Arnd Bergmann
Ville Syrjälä
James Morse