kernel/drivers/acpi, branch linux-4.15.y

nfit: fix region registration vs block-data-window ranges

2018-04-19T06:55:11Z

commit 8d0d8ed3356aa9ed43b819aaedd39b08ca453007 upstream. Commit 1cf03c00e7c1 "nfit: scrub and register regions in a workqueue" mistakenly attempts to register a region per BLK aperture. There is nothing to register for individual apertures as they belong as a set to a BLK aperture group that are registered with a corresponding DIMM-control-region. Filter them for registration to prevent some needless devm_kzalloc() allocations. Cc: Fixes: 1cf03c00e7c1 ("nfit: scrub and register regions in a workqueue") Reviewed-by: Dave Jiang Signed-off-by: Dan Williams Signed-off-by: Greg Kroah-Hartman

ACPI: EC: Fix debugfs_create_*() usage

2018-04-12T10:31:06Z

[ 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 Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

ACPI / video: Default lcd_only to true on Win8-ready and newer machines

2018-04-12T10:31:03Z

[ 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 Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

ACPI / watchdog: Fix off-by-one error at resource assignment

2018-03-28T16:23:00Z

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+ # 4.9+ Signed-off-by: Takashi Iwai Acked-by: Mika Westerberg Acked-by: Guenter Roeck Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman

acpi, numa: fix pxm to online numa node associations

2018-03-28T16:23:00Z

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: Reviewed-by: Toshi Kani Acked-by: Rafael J. Wysocki > Signed-off-by: Dan Williams Signed-off-by: Greg Kroah-Hartman

ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530

2018-03-09T06:47:49Z

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 Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman

acpi, nfit: fix register dimm error handling

2018-02-16T19:06:59Z

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 Cc: "Rafael J. Wysocki" Signed-off-by: Dan Williams Signed-off-by: Greg Kroah-Hartman

ACPI: sbshc: remove raw pointer from printk() message

2018-02-16T19:06:59Z

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 Signed-off-by: Greg Kroah-Hartman Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman

Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2017-12-23T21:47:22Z

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

Merge branch 'acpi-cppc'

2017-12-20T14:51:26Z

* acpi-cppc: ACPI: CPPC: remove initial assignment of pcc_ss_data