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2017-01-23clk: sunxi-ng: Add sun5i CCU driverMaxime Ripard
The Allwinner A10s, A13, R8 and NextThing GR8 are all based on the same silicon, and all share the same clocks. However, they're not packaged in the same way, and therefore not all the controllers are actually available on all these SoCs. Introduce a clock controller driver for all these SoCs with different compatibles to take that into account. Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-23Merge tag 'omapdrm-4.11' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next omapdrm changes for 4.11 The main change here is the IRQ code cleanup, which gives us properly working vblank counts and timestamps. We also get much less calls to runtime PM gets & puts. * tag 'omapdrm-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (26 commits) drm/omap: panel-sony-acx565akm.c: Add MODULE_ALIAS drm/omap: dsi: fix compile errors when enabling debug prints drm: omapdrm: Perform initialization/cleanup at probe/remove time drm: Move vblank cleanup from unregister to release drm: omapdrm: Use sizeof(*var) instead of sizeof(type) for structures drm: omapdrm: Remove global variables drm: omapdrm: Simplify IRQ wait implementation drm: omapdrm: Inline the pipe2vbl function drm: omapdrm: Don't call DISPC power handling in IRQ wait functions drm: omapdrm: Remove unused parameter from omap_drm_irq handler drm: omapdrm: Don't expose the omap_irq_(un)register() functions drm: omapdrm: Keep vblank interrupt enabled while CRTC is active drm: omapdrm: Use a spinlock to protect the CRTC pending flag drm: omapdrm: Prevent processing the same event multiple times drm: omapdrm: Check the CRTC software state at enable/disable time drm: omapdrm: Let the DRM core skip plane commit on inactive CRTCs drm: omapdrm: Replace DSS manager state check with omapdrm CRTC state drm: omapdrm: Handle OCP error IRQ directly drm: omapdrm: Handle CRTC error IRQs directly drm: omapdrm: Handle FIFO underflow IRQs internally ...
2017-01-22net: phy: bcm7xxx: Add entry for BCM7278Florian Fainelli
Add support for the BCM7278 28nm process Gigabit Ethernet PHY. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-22clk: rockchip: add rk3288 vip_out clock idJacob Chen
Add clock-ids for the vip block of the rk3288 Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-01-22locking/rwsem: Reinit wake_q after useWaiman Long
In __rwsem_down_write_failed_common(), the same wake_q variable name is defined twice, with the inner wake_q hiding the one in outer scope. We can either use different names for the two wake_q's. Even better, we can use the same wake_q twice, if necessary. To enable the latter change, we need to define a new helper function wake_q_init() to enable reinitalization of wake_q after use. Signed-off-by: Waiman Long <longman@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1485052415-9611-1-git-send-email-longman@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-20clk: stm32f7: Add stm32f7 clock DT bindings for STM32F746 boardsGabriel Fernandez
This patch introduces the stm32f7 clock DT bindings. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-20clk: imx7d: Add the OCOTP clockFabio Estevam
Add the OCOTP so that this hardware block can be used. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-20clk: bcm2835: Register the DSI0/DSI1 pixel clocks.Eric Anholt
The DSI pixel clocks are muxed from clocks generated in the analog phy by the DSI driver. In order to set them as parents, we need to do the same name lookup dance on them as we do for our root oscillator. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-20Merge tag 'v4.11-rockchip-clk1' of ↵Stephen Boyd
git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next Pull Rockchip clk updates from Heiko Stuebner: A new clock-type for the 1-2 muxes per soc that are for whatever reason controlled through the General Register Files, support for the rk3328 clock-controller (including a new pll-type) and the usual clock ids and some fixes. * tag 'v4.11-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: dt-bindings: clk: add rockchip,grf property for RK3399 clk: rockchip: use clock ids for memory controller parts on rk3066/rk3188 clk: rockchip: use rk3288 isp_in clock ids clk: rockchip: add clock ids for memory controller parts on rk3066/rk3188 clk: rockchip: add rk3288 isp_in clock ids clk: rockchip: Remove useless init of "grf" to -EPROBE_DEFER clk: rockchip: add clock controller for rk3328 dt-bindings: add bindings for rk3328 clock controller clk: rockchip: add dt-binding header for rk3328 clk: rockchip: add new pll-type for rk3328 clk: rockchip: describe aclk_vcodec using the new muxgrf type on rk3288 clk: rockchip: add a clock-type for muxes based in the grf
2017-01-20Merge tag 'clk-v4.11-samsung' of git://linuxtv.org/snawrocki/samsung into ↵Stephen Boyd
clk-next Pull Samsung clk updates from Sylwester Nawrocki: - addition of the CPU clock configuration data for Exynos4412 Prime SoC variant, - removal of driver for deprecated Exynos4415 SoC, - switching from the syscore to regular system sleep PM ops in the audio subsystem clocks controller driver, - updates of the definitions of some "Network On Chip" related clocks. * tag 'clk-v4.11-samsung' of git://linuxtv.org/snawrocki/samsung: clk: samsung: Remove Exynos4415 driver (SoC not supported anymore) clk: samsung: exynos-audss: Replace syscore PM with platform device PM clk: samsung: exynos5433: Set NoC (Network On Chip) clocks as critical clk: samsung: Add CPU clk configuration data for Exynos4412 Prime
2017-01-20delay: Add explanation of udelay() inaccuracyRussell King
There seems to be some misunderstanding that udelay() and friends will always guarantee the specified delay. This is a false understanding. When udelay() is based on CPU cycles, it can return early for many reasons which are detailed by Linus' reply to me in a thread in 2011: http://lists.openwall.net/linux-kernel/2011/01/12/372 However, a udelay test module was created in 2014 which allows udelay() to only be 0.5% fast, which is outside of the CPU-cycles udelay() results I measured back in 2011, which were deemed to be in the "we don't care" region. test_udelay() should be fixed to reflect the real allowable tolerance on udelay(), rather than 0.5%. Cc: David Riley <davidriley@chromium.org> Cc: John Stultz <john.stultz@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: John Stultz <john.stultz@linaro.org>
2017-01-20Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "ARM: - Fix for timer setup on VHE machines - Drop spurious warning when the timer races against the vcpu running again - Prevent a vgic deadlock when the initialization fails (for stable) s390: - Fix a kernel memory exposure (for stable) x86: - Fix exception injection when hypercall instruction cannot be patched" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: do not expose random data via facility bitmap KVM: x86: fix fixing of hypercalls KVM: arm/arm64: vgic: Fix deadlock on error handling KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems KVM: arm/arm64: Fix occasional warning from the timer work function
2017-01-20clk: sunxi-ng: add support for V3s CCUIcenowy Zheng
V3s has a similar but cut-down CCU to H3. Some muxes, especially clocks about CSI, are different, which makes it to need a new CCU driver. Add such a new driver for it. Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-20Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is a set of 12 fixes including the mpt3sas one that was causing hangs on ATA passthrough. The others are a couple of zoned block device fixes, a SAS device detection bug which lead to SATA drives not being matched to bays, two qla2xxx MSI fixes, a qla2xxx req for rsp confusion caused by cut and paste, and a few other minor fixes" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: mpt3sas: fix hang on ata passthrough commands scsi: lpfc: Set elsiocb contexts to NULL after freeing it scsi: sd: Ignore zoned field for host-managed devices scsi: sd: Fix wrong DPOFUA disable in sd_read_cache_type scsi: bfa: fix wrongly initialized variable in bfad_im_bsg_els_ct_request() scsi: ses: Fix SAS device detection in enclosure scsi: libfc: Fix variable name in fc_set_wwpn scsi: lpfc: avoid double free of resource identifiers scsi: qla2xxx: remove irq_affinity_notifier scsi: qla2xxx: fix MSI-X vector affinity scsi: qla2xxx: Fix apparent cut-n-paste error. scsi: qla2xxx: Get mutex lock before checking optrom_state
2017-01-20net: dsa: Remove hwmon supportAndrew Lunn
Only the Marvell mv88e6xxx DSA driver made use of the HWMON support in DSA. The temperature sensor registers are actually in the embedded PHYs, and the PHY driver now supports it. So remove all HWMON support from DSA and drivers. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20Merge tag 'mlx5-updates-2017-01-19' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5 and mlx5e updates 2017-01-19 This series includes some updates for mlx5 core and mlx5e netdevice driver. From Leon, a small fix that remove an unnecessary print. From Eli Cohen, a fix to the FW version printout in case of internal error. From Eugenia Emantayev, two patches, the 1st adds mlx5 1pps (pulse per second) mlx5 infrastructure support and the 2nd adds the necessary bits for mlx5e ptp logic and structures. From Mohamad, add support for s-tagged packet receive when in promiscuous mode. Form Gal Pressman, MCAM (Management capabilities mask register) and PCAM (Ports capabilities mask register) registers infrastructure, those registers are needed in order to query the different statistics registers support in FW, in order for the driver to enable/disable query and reporting them back to user. On top of this infrastructure we've exposed new set of statistics groups: - MPCNT: Physical layer statistical counters (For symbol errors) - PPCNT: PCIe performance counters In addition to the statistics capabilities series we've moved the mlx5 HCA capabilities fields to a dedicated struct under the driver private data. At the end a small patch to update & query statistics in the most desired order. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20csum: eliminate sparse warning in remcsum_unadjust()Lance Richardson
Cast second parameter of csum_sub() from __sum16 to __wsum. Signed-off-by: Lance Richardson <lrichard@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20tipc: make replicast a user selectable optionJon Paul Maloy
If the bearer carrying multicast messages supports broadcast, those messages will be sent to all cluster nodes, irrespective of whether these nodes host any actual destinations socket or not. This is clearly wasteful if the cluster is large and there are only a few real destinations for the message being sent. In this commit we extend the eligibility of the newly introduced "replicast" transmit option. We now make it possible for a user to select which method he wants to be used, either as a mandatory setting via setsockopt(), or as a relative setting where we let the broadcast layer decide which method to use based on the ratio between cluster size and the message's actual number of destination nodes. In the latter case, a sending socket must stick to a previously selected method until it enters an idle period of at least 5 seconds. This eliminates the risk of message reordering caused by method change, i.e., when changes to cluster size or number of destinations would otherwise mandate a new method to be used. Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20bpf: add bpf_probe_read_str helperGianluca Borello
Provide a simple helper with the same semantics of strncpy_from_unsafe(): int bpf_probe_read_str(void *dst, int size, const void *unsafe_addr) This gives more flexibility to a bpf program. A typical use case is intercepting a file name during sys_open(). The current approach is: SEC("kprobe/sys_open") void bpf_sys_open(struct pt_regs *ctx) { char buf[PATHLEN]; // PATHLEN is defined to 256 bpf_probe_read(buf, sizeof(buf), ctx->di); /* consume buf */ } This is suboptimal because the size of the string needs to be estimated at compile time, causing more memory to be copied than often necessary, and can become more problematic if further processing on buf is done, for example by pushing it to userspace via bpf_perf_event_output(), since the real length of the string is unknown and the entire buffer must be copied (and defining an unrolled strnlen() inside the bpf program is a very inefficient and unfeasible approach). With the new helper, the code can easily operate on the actual string length rather than the buffer size: SEC("kprobe/sys_open") void bpf_sys_open(struct pt_regs *ctx) { char buf[PATHLEN]; // PATHLEN is defined to 256 int res = bpf_probe_read_str(buf, sizeof(buf), ctx->di); /* consume buf, for example push it to userspace via * bpf_perf_event_output(), but this time we can use * res (the string length) as event size, after checking * its boundaries. */ } Another useful use case is when parsing individual process arguments or individual environment variables navigating current->mm->arg_start and current->mm->env_start: using this helper and the return value, one can quickly iterate at the right offset of the memory area. The code changes simply leverage the already existent strncpy_from_unsafe() kernel function, which is safe to be called from a bpf program as it is used in bpf_trace_printk(). Signed-off-by: Gianluca Borello <g.borello@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20device: Implement a bus agnostic dev_num_vf routinePhil Sutter
Now that pci_bus_type has num_vf callback set, dev_num_vf can be implemented in a bus type independent way and the check for whether a PCI device is being handled in rtnetlink can be dropped. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20device: bus_type: Introduce num_vf callbackPhil Sutter
This allows for bus types to implement their own method of retrieving the number of virtual functions a NIC on that type of bus supports. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20sock: use hlist_entry_safeGeliang Tang
Use hlist_entry_safe() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20soc: samsung: pmu: Provide global function to get PMU regmapMarek Szyprowski
PMU is something like a SoC wide service, so add a helper function to get PMU regmap. This will be used by other Exynos device drivers. This way it can be avoided to model this dependency in device tree (as phandles to PMU node) for almost every device in the SoC. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2017-01-20net: remove bh disabling around percpu_counter accessesEric Dumazet
Shaohua Li made percpu_counter irq safe in commit 098faf5805c8 ("percpu_counter: make APIs irq safe") We can safely remove BH disable/enable sections around various percpu_counter manipulations. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20virtio-net: restore VIRTIO_HDR_F_DATA_VALID on receivingJason Wang
Commit 501db511397f ("virtio: don't set VIRTIO_NET_HDR_F_DATA_VALID on xmit") in fact disables VIRTIO_HDR_F_DATA_VALID on receiving path too, fixing this by adding a hint (has_data_valid) and set it only on the receiving path. Cc: Rolf Neugebauer <rolf.neugebauer@docker.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20ASoC: core: add optional pcm_new callback for DAI driverArnaud Pouliquen
During probe, DAIs can need to perform some actions that requests the knowledge of the pcm runtime handle. The callback is called during DAIs linking, after PCM device creation. For instance this can be used to add relationship between a DAI pcm control and the pcm device. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-01-20DRM: add help to get ELD speaker allocationArnaud Pouliquen
Add helper to allow users to retrieve the speaker allocations without knowledge of the ELD structure. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-01-20Merge commit 'f8b5036361412a27c07a4ac9c3a4b80678cbd1e1' into stm32-dt-for-v4.11Alexandre TORGUE
2017-01-20brcmfmac: add support for BCM43455 with modalias sdio:c00v02D0dA9BFMartin Blumenstingl
BCM43455 is a more recent revision of the BCM4345. Some of the BCM43455 got a dedicated SDIO device ID which is currently not supported by brcmfmac. Adding the new sdio_device_id to brcmfmac is enough to get the BCM43455 supported because the chip itself is already supported (due to BCM4345 support in the driver). Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Tested-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-01-20reset: make optional functions really optionalRamiro Oliveira
The *_get_optional_* functions weren't really optional so this patch makes them really optional. These *_get_optional_* functions will now return NULL instead of an error if no matching reset phandle is found in the DT, and all the reset_control_* functions now accept NULL rstc pointers. Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20reset: Change shared flag from int to boolRamiro Oliveira
Since the new parameter being added is going to be a bool this patch changes the shared flag from int to bool to match the new parameter. Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20locking/rwsem: Remove unnecessary atomic_long_t castsWaiman Long
Since sem->count had been changed to a atomic_long_t type, it is no longer necessary to use the atomic_long_t cast anymore. So remove them. Signed-off-by: Waiman Long <longman@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/1484836312-6656-1-git-send-email-longman@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-20usb: chipidea: msm: Handle phy power statesStephen Boyd
The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Hook the phy initialization into the RESET event and the phy power off into the STOPPED event. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Consolidate extcon notifiersStephen Boyd
The two extcon notifiers are almost the same except for the variable name for the cable structure and the id notifier inverts the cable->state logic. Make it the same and replace two functions with one to save some lines. This also makes it so that the id cable state is true when the id pin is pulled low, so we change the name of ->state to ->connected to properly reflect that we're interested in the cable being connected. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Ivan T. Ivanov" <iivanov.xz@gmail.com> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Add platform flag for wrapper phy managementStephen Boyd
The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Therefore, add a flag to skip any phy power management in the core layer, leaving it up to the glue driver to manage. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Handle extcon events properlyStephen Boyd
We're currently emulating the vbus and id interrupts in the OTGSC read API, but we also need to make sure that if we're handling the events with extcon that we don't enable the interrupts for those events in the hardware. Therefore, properly emulate this register if we're using extcon, but don't enable the interrupts. This allows me to get my cable connect/disconnect working properly without getting spurious interrupts on my device that uses an extcon for these two events. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Ivan T. Ivanov" <iivanov.xz@gmail.com> Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20of: device: Support loading a module with OF based modaliasStephen Boyd
In the case of ULPI devices, we want to be able to load the driver before registering the device so that we don't get stuck in a loop waiting for the phy module to appear and failing usb controller probe. Currently we request the ulpi module via the ulpi ids, but in the DT case we might need to request it with the OF based modalias instead. Add a common function that allows anyone to request a module with the OF based modalias. Acked-by: Rob Herring <robh@kernel.org> Cc: <devicetree@vger.kernel.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20Revert "PM / sleep / ACPI: Use the ACPI_FADT_LOW_POWER_S0 flag"Rafael J. Wysocki
Revert commit 08b98d329165 (PM / sleep / ACPI: Use the ACPI_FADT_LOW_POWER_S0 flag) as it caused system suspend (in the default configuration) to fail on Dell XPS13 (9360) with the Kaby Lake processor. Fixes: 08b98d329165 (PM / sleep / ACPI: Use the ACPI_FADT_LOW_POWER_S0 flag) Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-20sched/clock: Fix hotplug crashPeter Zijlstra
Mike reported that he could trigger the WARN_ON_ONCE() in set_sched_clock_stable() using hotplug. This exposed a fundamental problem with the interface, we should never mark the TSC stable if we ever find it to be unstable. Therefore set_sched_clock_stable() is a broken interface. The reason it existed is that not having it is a pain, it means all relevant architecture code needs to call clear_sched_clock_stable() where appropriate. Of the three architectures that select HAVE_UNSTABLE_SCHED_CLOCK ia64 and parisc are trivial in that they never called set_sched_clock_stable(), so add an unconditional call to clear_sched_clock_stable() to them. For x86 the story is a lot more involved, and what this patch tries to do is ensure we preserve the status quo. So even is Cyrix or Transmeta have usable TSC they never called set_sched_clock_stable() so they now get an explicit mark unstable. Reported-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 9881b024b7d7 ("sched/clock: Delay switching sched_clock to stable") Link: http://lkml.kernel.org/r/20170119133633.GB6536@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-19net/mlx5: Move cached hca caps to designated caps structGal Pressman
The caps structure consists of hca caps and port/management caps, all under one roof. Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-01-19net/mlx5: Add MPCNT register infrastructureGal Pressman
Add the needed infrastructure for future use of MPCNT register. Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-01-19net/mlx5: Add PPCNT physical layer statistical group infrastructureGal Pressman
Add the needed infrastructure for future use of PPCNT physical layer statistical group. Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2017-01-19net/mlx5: Query and cache PCAM, MCAM registers on initializationGal Pressman
On load_one, we now cache our capabilities registers internally, similar to QUERY_HCA_CAP. Capabilities can later be queried using macros introduced in this patch. Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-01-19net/mlx5: Expose PCAM, MCAM registers infrastructureGal Pressman
PCAM: Ports capabilities mask register. MCAM: Management capabilities mask register. PCAM and MCAM registers will provide information regarding firmware support for different features, in order to avoid cases where new driver combined with old firmware results in syndromes (for ex. PCIe counters before this patchset). Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-01-19net/mlx5: Add support to s-tag in mlx5 firmware interfaceMohamad Haj Yahia
Add svlan_tag and rename vlan_tag to cvlan_tag in flow table entry match param. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2017-01-19net/mlx5: Add MTPPS and MTPPSE registers infrastructureEugenia Emantayev
Implement query and set functionality for MTPPS and MTPPSE registers. MTPPS (Management Pulse Per Second) provides the device PPS capabilities, configures the PPS in and out modules and holds the PPS in time stamp. Query MTPPS is supported only when HCA_CAP.pps is set and modify is supported when HCA_CAP.pps_modify is set. MTPPSE (Management Pulse Per Second Event) configures the different event generation modes for PPS. Supported when HCA_CAP.pps is set. Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-01-19phy: increase size of MII_BUS_ID_SIZE and bus_idVolodymyr Bendiuga
Some bus names are pretty long and do not fit into 17 chars. Increase therefore MII_BUS_ID_SIZE and phy_fixup.bus_id to larger number. Now mii_bus.id can host larger name. Signed-off-by: Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com> Signed-off-by: Magnus Öberg <magnus.oberg@westermo.se> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-19tty: constify tty_ldisc_receive_buf buffer pointerRob Herring
This is needed to work with the client operations which uses const ptrs. Really, the flags pointer could be const, too, but this would be a tree wide fix. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-19arm64/dma-mapping: Implement DMA_ATTR_PRIVILEGEDMitchel Humpherys
The newly added DMA_ATTR_PRIVILEGED is useful for creating mappings that are only accessible to privileged DMA engines. Implement it in dma-iommu.c so that the ARM64 DMA IOMMU mapper can make use of it. Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-01-19common: DMA-mapping: add DMA_ATTR_PRIVILEGED attributeMitchel Humpherys
This patch adds the DMA_ATTR_PRIVILEGED attribute to the DMA-mapping subsystem. Some advanced peripherals such as remote processors and GPUs perform accesses to DMA buffers in both privileged "supervisor" and unprivileged "user" modes. This attribute is used to indicate to the DMA-mapping subsystem that the buffer is fully accessible at the elevated privilege level (and ideally inaccessible or at least read-only at the lesser-privileged levels). Cc: linux-doc@vger.kernel.org Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>