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2015-12-24net/mlx5_core: Add setting ATOMIC endian modeEran Ben Elisha
HW is capable of 2 requestor endianness modes for standard 8 Bytes atomic: BE (0x0) and host endianness (0x1). Read the supported modes from hca atomic capabilities and configure HW to host endianness mode if supported. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add driver cross-channel supportLeon Romanovsky
Add support of cross-channel functionality to mlx5 driver. This includes ability to ignore overrun for CQ which intended for cross-channel, export device capability and configure the QP to be sync master/slave queues. The cross-channel enabled QP supports combination of three possible properties: * WQE processing on the receive queue of this QP * WQE processing on the send queue of this QP * WQE are supported on the send queue Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add hca_core_clock_offset to udata in init_ucontextMatan Barak
Pass hca_core_clock_offset to user-space is mandatory in order to let the user-space read the free-running clock register from the right offset in the memory mapped page. Passing this value is done by changing the vendor's command and response of init_ucontext to be in extensible form. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add support for hca_core_clock and timestamp_maskMatan Barak
Reporting the hca_core_clock (in kHZ) and the timestamp_mask in query_device extended verb. timestamp_mask is used by users in order to know what is the valid range of the raw timestamps, while hca_core_clock reports the clock frequency that is used for timestamps. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net: cdc_ncm: avoid changing RX/TX buffers on MTU changesBjørn Mork
NCM buffer sizes are negotiated with the device independently of the network device MTU. The RX buffers are allocated by the usbnet framework based on the rx_urb_size value set by cdc_ncm. A single RX buffer can hold a number of MTU sized packets. The default usbnet change_mtu ndo only modifies rx_urb_size if it is equal to hard_mtu. And the cdc_ncm driver will set rx_urb_size and hard_mtu independently of each other, based on dwNtbInMaxSize and dwNtbOutMaxSize respectively. It was therefore assumed that usbnet_change_mtu() would never touch rx_urb_size. This failed to consider the case where dwNtbInMaxSize and dwNtbOutMaxSize happens to be equal. Fix by implementing an NCM specific change_mtu ndo, modifying the netdev MTU without touching the buffer size settings. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-23Merge branch 'clk-rockchip' into clk-nextMichael Turquette
2015-12-23clk: add flag for clocks that need to be enabled on rate changesHeiko Stuebner
Some clocks need to be enabled to accept rate changes. This patch adds a new flag CLK_SET_RATE_UNGATE that lets clk_change_rate enable the clock before trying to change the rate and disable it again afterwards. This of course doesn't effect clocks that are already running at that point, as their refcount will only temporarily increase. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-12-23tracing: Introduce TRACE_EVENT_FN_COND macroDenis Kirjanov
TRACE_EVENT_FN can't be used in some circumstances like invoking trace functions from offlined CPU due to RCU usage. This patch adds the TRACE_EVENT_FN_COND macro to make such trace points conditional. Link: http://lkml.kernel.org/r/1450124286-4822-1-git-send-email-kda@linux-powerpc.org Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-12-23ftrace: Remove use of control list and opsSteven Rostedt (Red Hat)
Currently perf has its own list function within the ftrace infrastructure that seems to be used only to allow for it to have per-cpu disabling as well as a check to make sure that it's not called while RCU is not watching. It uses something called the "control_ops" which is used to iterate over ops under it with the control_list_func(). The problem is that this control_ops and control_list_func unnecessarily complicates the code. By replacing FTRACE_OPS_FL_CONTROL with two new flags (FTRACE_OPS_FL_RCU and FTRACE_OPS_FL_PER_CPU) we can remove all the code that is special with the control ops and add the needed checks within the generic ftrace_list_func(). Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-12-23IB/mlx5: Add RoCE fields to Address VectorAchiad Shochat
Set the address handle and QP address path fields according to the link layer type (IB/Eth). Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Support IB device's callbacks for adding/deleting GIDsAchiad Shochat
These callbacks write into the mlx5 RoCE address table. Upon del_gid we write a zero'd GID. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Set network_hdr_type upon RoCE responder completionAchiad Shochat
When handling a responder completion, if the link layer is Ethernet, set the work completion network_hdr_type field according to CQE's info and the IB_WC_WITH_NETWORK_HDR_TYPE flag. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Extend query_device/port to support RoCEAchiad Shochat
Using the vport access functions to retrieve the Ethernet specific information and return this information in ib_query_device and ib_query_port. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net/mlx5_core: Introduce access functions to query vport RoCE fieldsAchiad Shochat
Introduce access functions to query NIC vport system_image_guid, node_guid and qkey_viol_cntr. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net/mlx5_core: Introduce access functions to enable/disable RoCEAchiad Shochat
A mlx5 Ethernet port must be explicitly enabled for RoCE. When RoCE is not enabled on the port, the NIC will refuse to create QPs attached to it and incoming RoCE packets will be considered by the NIC as plain Ethernet packets. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23new helpers: no_seek_end_llseek{,_size}()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-23PCI/AER: include header fileSudip Mukherjee
We are having build failure with sparc allmodconfig with the error: drivers/nvme/host/pci.c:15:0: include/linux/aer.h: In function 'pci_enable_pcie_error_reporting': include/linux/aer.h:49:10: error: 'EINVAL' undeclared (first use in this function) The file aer.h is using the error values but they are defined in errno.h. Include errno.h so that we have the definitions of the error codes. Fixes: a0a3408ee614 ("NVMe: Add pci error handlers") Cc: Keith Busch <keith.busch@intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-23sunrpc: Add a function to close temporary transports immediatelyScott Mayhew
Add a function svc_age_temp_xprts_now() to close temporary transports whose xpt_local matches the address passed in server_addr immediately instead of waiting for them to be closed by the timer function. The function is intended to be used by notifier_blocks that will be added to nfsd and lockd that will run when an ip address is deleted. This will eliminate the ACK storms and client hangs that occur in HA-NFS configurations where nfsd & lockd is left running on the cluster nodes all the time and the NFS 'service' is migrated back and forth within a short timeframe. Signed-off-by: Scott Mayhew <smayhew@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2015-12-23Merge remote-tracking branches 'asoc/topic/samsung', 'asoc/topic/sh', ↵Mark Brown
'asoc/topic/ssm2518' and 'asoc/topic/sti' into asoc-next
2015-12-22genalloc:support allocating specific regionZhao Qiang
Add new algo for genalloc, it reserve a specific region of memory Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-12-22genalloc:support memory-allocation with bytes-alignment to genallocZhao Qiang
Bytes alignment is required to manage some special RAM, so add gen_pool_first_fit_align to genalloc, meanwhile add gen_pool_alloc_algo to pass algo in case user layer using more than one algo, and pass data to gen_pool_first_fit_align(modify gen_pool_alloc as a wrapper) Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-12-22Merge tag 'omap-for-v4.5/wakeup-m3' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers TI wakeup M3 IPC device driver for v4.5 merge window. This driver will eventually allow am33xx and am437x to support PM with their Cortex-M3 power management processor. This driver has been waiting to get merged for quite a while but has had dependencies to the remoteproc that are now out of the way. * tag 'omap-for-v4.5/wakeup-m3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: soc: ti: Add wkup_m3_ipc driver Documentation: dt: add bindings for TI Wakeup M3 IPC device Signed-off-by: Olof Johansson <olof@lixom.net>
2015-12-22Merge tag 'omap-for-v4.5/soc-initcall' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc SoC changes for omaps for v4.5 merge window. The main change here is to change the omap initcall levels a bit to initialize things later to allow early device drivers at core_initcall level. This makes things easier for us as most clocks can be made into regular device drivers except for a few early clocks needed to initialize system timers. I wanted to have these changes sit in Linux next for a few weeks before sending out a pull request, and so far now issues have showed up. The other changes in this series are timer changes for making use of the new PWM driver, and timer changes to support more high security SoCs. Also few minor improvments for module autoidle settings for ti81xx spinbox and dra7 debug on uart4 in hwmod code. The rest is pretty much just removal of platform data for SoCs that are all device tree only nowadays. * tag 'omap-for-v4.5/soc-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Remove device creation for omap-pcm-audio ARM: OMAP1: Remove device creation for omap-pcm-audio ARM: OMAP2+: Change core_initcall levels to postcore_initcall ARM: DRA7: hwmod: Enable DEBUG_LL for UART4 ARM: OMAP: RX-51: fix a typo in log writing ARM: omap4: hwmod: Remove elm address space from hwmod data ARM: OMAP2+: timer: Remove secure timer for DRA7xx HS devices ARM: OMAP: dmtimer: check for fixed timers during config ARM: OMAP2+: Remove omap_mmu_dev_attr structure ARM: OMAP4: hwmod data: Remove legacy IOMMU attr and addrs ARM: OMAP3: hwmod data: Remove legacy IOMMU data ARM: OMAP2+: Remove legacy device instantiation of IOMMUs ARM: OMAP2+: Add hwmod spinbox support for dm816x ARM: OMAP: add DT support for ti,dm816-timer ARM: OMAP: dmtimer: Add clock source from DT Signed-off-by: Olof Johansson <olof@lixom.net>
2015-12-22Merge branches '4.5/Or-cleanup' and '4.5/rdma-cq' into k.o/for-4.5Doug Ledford
Signed-off-by: Doug Ledford <dledford@redhat.com> Conflicts: drivers/infiniband/ulp/iser/iser_verbs.c
2015-12-22Merge tag 'qcom-soc-for-4.5' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers Qualcomm ARM Based SoC Updates for 4.5 * Add WCNSS_CTRL client * Various Kconfig changes to fix build issues * Update SoC Qualcomm MAINTAINERS entry * Add SMP2P, SMSM, and SMEM state machine drivers * Add SMD-RPM support for existing platforms * tag 'qcom-soc-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: MAINTAINERS: Change QCOM entries soc: qcom: smd-rpm: Add existing platform support soc: qcom: Introduce WCNSS_CTRL SMD client ARM: qcom: select ARM_CPU_SUSPEND for power management MAINTAINERS: Add rules for Qualcomm dts files soc: qcom: enable smsm/smp2p modular build serial: msm_serial: Make config tristate soc: qcom: smp2p: Qualcomm Shared Memory Point to Point soc: qcom: smsm: Add driver for Qualcomm SMSM soc: qcom: Introduce common SMEM state machine code Signed-off-by: Olof Johansson <olof@lixom.net>
2015-12-22Merge commit 'fe5fa8fbd4d47f40a45fa29ee1abdb10cb061ec2' into clk-nextMichael Turquette
2015-12-22usb: gadget: forbid queuing request to a disabled epDu, Changbin
Queue a request to disabled ep doesn't make sense, and induce caller make mistakes. Here is a example for the android mtp gadget function driver. A mem corruption can happen on below senario. 1) On disconnect, mtp driver disable its EPs, 2) During send_file_work and receive_file_work, mtp queues a request to ep. (The mtp driver need improve its synchronization logic!) 3) mtp_function_unbind is invoked and all mtp requests are freed. 4) when udc process the request queued on step 2, will cause kernel NULL pointer dereference exception. Signed-off-by: Du, Changbin <changbin.du@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22iio: Make IIO value formating function globally available.Andrew F. Davis
Make IIO value formating function globally available to allow IIO drivers to output values as the core does. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-22block: remove REQ_NO_TIMEOUT flagChristoph Hellwig
This was added for the 'magic' AEN requests in the NVMe driver that never return. We now handle them purely inside the driver and don't need this core hack any more. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-22block: defer timeouts to a workqueueChristoph Hellwig
Timer context is not very useful for drivers to perform any meaningful abort action from. So instead of calling the driver from this useless context defer it to a workqueue as soon as possible. Note that while a delayed_work item would seem the right thing here I didn't dare to use it due to the magic in blk_add_timer that pokes deep into timer internals. But maybe this encourages Tejun to add a sensible API for that to the workqueue API and we'll all be fine in the end :) Contains a major update from Keith Bush: "This patch removes synchronizing the timeout work so that the timer can start a freeze on its own queue. The timer enters the queue, so timer context can only start a freeze, but not wait for frozen." Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-22mmc: dw_mmc: use resource_size_t to store physical addressArnd Bergmann
The dw_mmc driver stores the physical address of the MMIO registers in a pointer, which requires the use of type casts, and is actually broken if anyone ever has this device on a 32-bit SoC in registers above 4GB. Gcc warns about this possibility when the driver is built with ARM LPAE enabled: mmc/host/dw_mmc.c: In function 'dw_mci_edmac_start_dma': mmc/host/dw_mmc.c:702:17: warning: cast from pointer to integer of different size cfg.dst_addr = (dma_addr_t)(host->phy_regs + fifo_offset); ^ mmc/host/dw_mmc-pltfm.c: In function 'dw_mci_pltfm_register': mmc/host/dw_mmc-pltfm.c:63:19: warning: cast to pointer from integer of different size host->phy_regs = (void *)(regs->start); This changes the code to use resource_size_t, which gets rid of the warning, the bug and the useless casts. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-12-22mmc: core: Introduce MMC_CAP2_NO_SDIO capCarlo Caione
This patch introduce a new MMC_CAP2_NO_SDIO cap used to tell the mmc core to not send SDIO specific commands. Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-12-22mmc: mvsdio: delete platform data headerLinus Walleij
This platform data struct is only used inside the MVSDIO driver, nowhere else in the entire kernel. Move the struct into the driver and delete the external header. Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-12-22mmc: core: Refactor code to register the MMC PM notifierUlf Hansson
Instead of checking for "#ifdef" directly in the code, let's invent a pair of mmc core functions to deal with register/unregister the MMC PM notifier block. Implement stubs for these functions when CONFIG_PM_SLEEP is unset, as in that case the PM notifiers isn't used. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-12-22mmc: core: Remove MMC_CAP_RUNTIME_RESUME as it's redundantUlf Hansson
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-12-21vfio: Include No-IOMMU modeAlex Williamson
There is really no way to safely give a user full access to a DMA capable device without an IOMMU to protect the host system. There is also no way to provide DMA translation, for use cases such as device assignment to virtual machines. However, there are still those users that want userspace drivers even under those conditions. The UIO driver exists for this use case, but does not provide the degree of device access and programming that VFIO has. In an effort to avoid code duplication, this introduces a No-IOMMU mode for VFIO. This mode requires building VFIO with CONFIG_VFIO_NOIOMMU and enabling the "enable_unsafe_noiommu_mode" option on the vfio driver. This should make it very clear that this mode is not safe. Additionally, CAP_SYS_RAWIO privileges are necessary to work with groups and containers using this mode. Groups making use of this support are named /dev/vfio/noiommu-$GROUP and can only make use of the special VFIO_NOIOMMU_IOMMU for the container. Use of this mode, specifically binding a device without a native IOMMU group to a VFIO bus driver will taint the kernel and should therefore not be considered supported. This patch includes no-iommu support for the vfio-pci bus driver only. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
2015-12-21Drivers: hv: vmbus: fix the building warning with hyperv-keyboardDexuan Cui
With the recent change af3ff643ea91ba64dd8d0b1cbed54d44512f96cd (Drivers: hv: vmbus: Use uuid_le type consistently), we always get this warning: CC [M] drivers/input/serio/hyperv-keyboard.o drivers/input/serio/hyperv-keyboard.c:427:2: warning: missing braces around initializer [-Wmissing-braces] { HV_KBD_GUID, }, ^ drivers/input/serio/hyperv-keyboard.c:427:2: warning: (near initialization for .id_table[0].guid.b.) [-Wmissing-braces] The patch fixes the warning. Signed-off-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-21Merge 4.4-rc6 into usb-nextGreg Kroah-Hartman
We want the USB and PHY fixes in here as well to make things easier for testing and development. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-21Merge 4.4-rc6 into tty-nextGreg Kroah-Hartman
We want the serial/tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-21arm64: hugetlb: add support for PTE contiguous bitDavid Woods
The arm64 MMU supports a Contiguous bit which is a hint that the TTE is one of a set of contiguous entries which can be cached in a single TLB entry. Supporting this bit adds new intermediate huge page sizes. The set of huge page sizes available depends on the base page size. Without using contiguous pages the huge page sizes are as follows. 4KB: 2MB 1GB 64KB: 512MB With a 4KB granule, the contiguous bit groups together sets of 16 pages and with a 64KB granule it groups sets of 32 pages. This enables two new huge page sizes in each case, so that the full set of available sizes is as follows. 4KB: 64KB 2MB 32MB 1GB 64KB: 2MB 512MB 16GB If a 16KB granule is used then the contiguous bit groups 128 pages at the PTE level and 32 pages at the PMD level. If the base page size is set to 64KB then 2MB pages are enabled by default. It is possible in the future to make 2MB the default huge page size for both 4KB and 64KB granules. Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Reviewed-by: Steve Capper <steve.capper@linaro.org> Signed-off-by: David Woods <dwoods@ezchip.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-12-21irqchip/gic-v2m: acpi: Introducing GICv2m ACPI supportSuravee Suthikulpanit
This patch introduces gicv2m_acpi_init(), which uses information in MADT GIC MSI frames structure to initialize GICv2m driver. It also exposes gicv2m_init() function, which simplifies callers to a single GICv2m init function. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Tested-by: Duc Dang <dhdang@apm.com> Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-12-21irqdomain: Introduce is_fwnode_irqchip helperSuravee Suthikulpanit
Since there will be several places checking if fwnode.type is equal FWNODE_IRQCHIP, this patch adds a convenient function for this purpose. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-12-21acpi: pci: Setup MSI domain for ACPI based pci devicesSuravee Suthikulpanit
This patch introduces pci_msi_register_fwnode_provider() for irqchip to register a callback, to provide a way to determine appropriate MSI domain for a pci device. It also introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-12-21phy: omap-usb2: use *syscon* framework API to power on/off the PHYKishon Vijay Abraham I
Deprecate using phy-omap-control driver to power on/off the PHY, and use *syscon* framework to do the same. This handles powering on/off the PHY for the USB2 PHYs used in various TI SoCs. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-12-21Merge tag 'v4.4-rc6' into develLinus Walleij
Linux 4.4-rc6
2015-12-21PM / runtime: Add new helper for conditional usage count incrementationRafael J. Wysocki
Introduce a new runtime PM function, pm_runtime_get_if_in_use(), that will increment the device's runtime PM usage counter and return 1 if its status is RPM_ACTIVE and its usage counter is greater than 0 at the same time (0 will be returned otherwise). This is useful for things that should only be done if the device is active (from the runtime PM perspective) and used by somebody (as indicated by the usage counter) already and they are not worth bothering otherwise. Requested-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-20fs: configfs: Add unlocked version of configfs_depend_item()Krzysztof Opasiak
This change is necessary for the SCSI target usb gadget composed with configfs. In this case configfs will be used for two different purposes: to compose a usb gadget and to configure the target part. If an instance of tcm function is created in $CONFIGFS_ROOT/usb_gadget/<gadget>/functions a tpg can be created in $CONFIGFS_ROOT/target/usb_gadget/<wwn>/, but after a tpg is created the tcm function must not be removed until its corresponding tpg is gone. While the configfs_depend/undepend_item() are meant exactly for creating this kind of dependencies, they are not suitable if the other kernel subsystem happens to be another subsystem in configfs, so this patch adds unlocked versions meant for configfs callbacks. Above description has been provided by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> In configfs_depend_item() we have to consider two possible cases: 1) When we are called to depend another item in the same subsystem as caller In this case we should skip locking configfs root as we know that configfs is in valid state and our subsystem will not be unregistered during this call. 2) When we are called to depend item in different subsystem than our caller In this case we are also sure that configfs is in valid state but we have to lock root of configfs to avoid unregistration of target's subsystem. As it is other than caller's subsystem, there may be nothing what protects us against unregistration of that subsystem. Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-12-20fs: configfs: Drop unused parameter from configfs_undepend_item()Krzysztof Opasiak
subsys parameter is never used by configfs_undepend_item() so there is no point in passing it to this function. Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-12-19Merge branch 'irq/gic-4.5' of ↵Thomas Gleixner
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull the GIC related updates from Marc Zyngier: "Not a lot this time (what a relief!), but an interesting series from Linus Walleij coming out of his work converting the ARM RealView platforms to DT, and a couple of mundane fixes."
2015-12-19Merge branch 'irq/wire-msi-bridge' of ↵Thomas Gleixner
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull the MSI wire bridge implementation from Marc Zyngier along with the first user of it. This is infrastructure to support a wired interrupt to MSI interrupt brigde. The first user is mbigen found in Hisilicon ARM SoCs.