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2017-02-17ptp: use is_visible method to hide unused attributesDmitry Torokhov
Instead of creating selected attributes after the device is created (and after userspace potentially seen uevent), lets use attribute group is_visible() method to control which attributes are shown. This will allow us to create all attributes (except "pins" group, which will be taken care of later) before userspace gets notified about new ptp class device. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: use kcalloc when allocating arraysDmitry Torokhov
kcalloc is more semantically correct when allocating arrays of objects, and overflow-safe. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: do not explicitly set drvdata in ptp_clock_register()Dmitry Torokhov
We do not need explicitly call dev_set_drvdata(), as it is done for us by device_create(). Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17mlx4: do not fire tasklet unless necessaryEric Dumazet
All rx and rx netdev interrupts are handled by respectively by mlx4_en_rx_irq() and mlx4_en_tx_irq() which simply schedule a NAPI. But mlx4_eq_int() also fires a tasklet to service all items that were queued via mlx4_add_cq_to_tasklet(), but this handler was not called unless user cqe was handled. This is very confusing, as "mpstat -I SCPU ..." show huge number of tasklet invocations. This patch saves this overhead, by carefully firing the tasklet directly from mlx4_add_cq_to_tasklet(), removing four atomic operations per IRQ. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Tariq Toukan <tariqt@mellanox.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17MIPS: VDSO: Explicitly use -fno-asynchronous-unwind-tablesRobert Schiele
Not every toolchain has -fno-asynchronous-unwind-tables per default on MIPS. This patch specifies the necessary option explicitly for VDSO library build. This prevents the following build failure: GENVDSO arch/mips/vdso/vdso-image.c arch/mips/vdso/genvdso: 'arch/mips/vdso/vdso.so.dbg' contains relocation sections .../arch/mips/vdso/Makefile:84: recipe for target 'arch/mips/vdso/vdso-image.c' failed Signed-off-by: Robert Schiele <rschiele@gmail.com> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Maciej W. Rozycki" <macro@imgtec.com> Cc: Alexander Sverdlin <alexander.sverdlin@nokia.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15127/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17KVM: Return an error code only as a constant in kvm_get_dirty_log()Markus Elfring
* Return an error code without storing it in an intermediate variable. * Delete the local variable "r" and the jump label "out" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-17KVM: Return an error code only as a constant in kvm_get_dirty_log_protect()Markus Elfring
* Return an error code without storing it in an intermediate variable. * Delete the local variable "r" and the jump label "out" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-17KVM: Return directly after a failed copy_from_user() in kvm_vm_compat_ioctl()Markus Elfring
* Return directly after a call of the function "copy_from_user" failed in a case block. This issue was detected by using the Coccinelle software. * Delete the jump label "out" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-17KVM: x86: remove code for lazy FPU handlingPaolo Bonzini
The FPU is always active now when running KVM. Reviewed-by: David Matlack <dmatlack@google.com> Reviewed-by: Bandan Das <bsd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-17KVM: race-free exit from KVM_RUN without POSIX signalsPaolo Bonzini
The purpose of the KVM_SET_SIGNAL_MASK API is to let userspace "kick" a VCPU out of KVM_RUN through a POSIX signal. A signal is attached to a dummy signal handler; by blocking the signal outside KVM_RUN and unblocking it inside, this possible race is closed: VCPU thread service thread -------------------------------------------------------------- check flag set flag raise signal (signal handler does nothing) KVM_RUN However, one issue with KVM_SET_SIGNAL_MASK is that it has to take tsk->sighand->siglock on every KVM_RUN. This lock is often on a remote NUMA node, because it is on the node of a thread's creator. Taking this lock can be very expensive if there are many userspace exits (as is the case for SMP Windows VMs without Hyper-V reference time counter). As an alternative, we can put the flag directly in kvm_run so that KVM can see it: VCPU thread service thread -------------------------------------------------------------- raise signal signal handler set run->immediate_exit KVM_RUN check run->immediate_exit Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-17spi: ti-qspi: revise ti_qspi_probe() failure flowPrahlad V
call spi_master_put() in case of failures after spi_alloc_master(). call pm_runtime_disable() in case of failures after pm_runtime_enable(). Signed-off-by: Prahlad V <prahlad.eee@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-02-17ASoC: Intel: bxt: Add jack port initialize in bxt_rt298 machineJeeja KP
After the pcm jack is created, create and initialize the pin switch widget for each port. Pin switch is to enable/disable the pin when monitor is connected/disconnected. Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-02-17MIPS: BCM47XX: Fix button inversion for Asus WL-500WMirko Parthey
The Asus WL-500W buttons are active high, but the software treats them as active low. Fix the inverted logic. Fixes: 3be972556fa1 ("MIPS: BCM47XX: Import buttons database from OpenWrt") Signed-off-by: Mirko Parthey <mirko.parthey@web.de> Acked-by: Rafał Miłecki <rafal@milecki.pl> Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 3.14.x- Patchwork: https://patchwork.linux-mips.org/patch/15295/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: DTS: Add img directory to MakefileIan Pozella
An img directory exists for the Pistchio SoC device tree but the directory itself isn't in the dts Makefile meaning the dtbs never get built. Fixes: daa10170da27 ("MIPS: DTS: img: add device tree for Marduk board") Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com> Reviewed-by: Rahul Bedarkar <Rahul.Bedarkar@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15309/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: ip27: Disable qlge driver in defconfigArnd Bergmann
One of the last remaining failures in kernelci.org is for a gcc bug: drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: error: insn does not satisfy its constraints: drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: internal compiler error: in extract_constrain_insn, at recog.c:2190 This is apparently broken in gcc-6 but fixed in gcc-7, and I cannot reproduce the problem here. However, it is clear that ip27_defconfig does not actually need this driver as the platform has only PCI-X but not PCIe, and the qlge adapter in turn is PCIe-only. The driver was originally enabled in 2010 along with lots of other drivers. Fixes: 59d302b342e5 ("MIPS: IP27: Make defconfig useful again.") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15197/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: pic32mzda: Fix linker error for pic32_get_pbclk()Purna Chandra Mandal
Early clock API pic32_get_pbclk() is defined in early_clk.c and used by time.c and early_console.c. When CONFIG_EARLY_PRINTK isn't set, early_clk.c isn't compiled and time.c fails to link. Fix it by compiling early_clk.c always. Also sort files in alphabetical order. Fixes: 6e4ad1b41360 ("MIPS: pic32mzda: fix getting timer clock rate.") Reported-by: Harvey Hunt <harvey.hunt@imgtec.com> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Harvey Hunt <harvey.hunt@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Joshua Henderson <digitalpeer@digitalpeer.com> Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 4.7.x- Patchwork: https://patchwork.linux-mips.org/patch/13383/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: Lantiq: Keep ethernet enabled during bootFelix Fietkau
Disabling ethernet during reboot (only to enable it again when the ethernet driver attaches) can put the chip into a faulty state where it corrupts the header of all incoming packets. This happens if packets arrive during the time window where the core is disabled, and it can be easily reproduced by rebooting while sending a flood ping to the broadcast address. Fixes: 95135bfa7ead ("MIPS: Lantiq: Deactivate most of the devices by default") Signed-off-by: Felix Fietkau <nbd@nbd.name> Acked-by: John Crispin <john@phrozen.org> Cc: hauke.mehrtens@lantiq.com Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 4.4.x- Patchwork: https://patchwork.linux-mips.org/patch/15078/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: OCTEON: Fix copy_from_user fault handling for large buffersJames Cowgill
If copy_from_user is called with a large buffer (>= 128 bytes) and the userspace buffer refers partially to unreadable memory, then it is possible for Octeon's copy_from_user to report the wrong number of bytes have been copied. In the case where the buffer size is an exact multiple of 128 and the fault occurs in the last 64 bytes, copy_from_user will report that all the bytes were copied successfully but leave some garbage in the destination buffer. The bug is in the main __copy_user_common loop in octeon-memcpy.S where in the middle of the loop, src and dst are incremented by 128 bytes. The l_exc_copy fault handler is used after this but that assumes that "src < THREAD_BUADDR($28)". This is not the case if src has already been incremented. Fix by adding an extra fault handler which rewinds the src and dst pointers 128 bytes before falling though to l_exc_copy. Thanks to the pwritev test from the strace test suite for originally highlighting this bug! Fixes: 5b3b16880f40 ("MIPS: Add Cavium OCTEON processor support ...") Signed-off-by: James Cowgill <James.Cowgill@imgtec.com> Acked-by: David Daney <david.daney@cavium.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14978/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17MIPS: Fix special case in 64 bit IP checksumming.Ralf Baechle
For certain arguments such as saddr = 0xc0a8fd60, daddr = 0xc0a8fda1, len = 80, proto = 17, sum = 0x7eae049d there will be a carry when folding the intermediate 64 bit checksum to 32 bit but the code doesn't add the carry back to the one's complement sum, thus an incorrect result will be generated. Reported-by: Mark Zhang <bomb.zhang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: stable@vger.kernel.org Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-17KVM: PPC: Book3S HV: Turn "KVM guest htab" message into a debug messageThomas Huth
The average user likely does not know what a "htab" or "LPID" is, and it's annoying that these messages are quickly filling the dmesg log when you're doing boot cycle tests, so let's turn it into a debug message instead. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2017-02-17ASoC: nau8825: automatic BCLK and LRC divde in master modeJohn Hsu
configurable LRC and BCLK divide. The driver will make configurations of LRC and BCLK automatically according to BCLK and FS information in master mode. Signed-off-by: John Hsu <KCHSU0@nuvoton.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-02-17Merge branch 'linux-4.11' of git://github.com/skeggsb/linux into drm-nextDave Airlie
- Rework of the secure boot code, in preparation for GP10x secure boot. - Improvements to channel recovery - Initial power budget code - Some preparation for an upcoming MMU rework (probably 4.12) - Misc other fixes. * 'linux-4.11' of git://github.com/skeggsb/linux: (88 commits) drm/nouveau/tmr: provide backtrace when a timeout is hit drm/nouveau/pci/g92: Fix rearm drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios drm/nouveau/hwmon: expose power_max and power_crit drm/nouveau/iccsense: Parse max and crit power level drm/nouveau/bios/power_budget: Add basic power budget parsing drm/nouveau/fifo/gk104-: preempt recovery drm/nouveau/fifo/gk104-: trigger mmu fault before attempting engine recovery drm/nouveau/fifo/gk104-: ACK SCHED_ERROR before attempting CTXSW_TIMEOUT recovery drm/nouveau/fifo/gk104-: directly use new recovery code for ctxsw timeout drm/nouveau/fifo/gk104-: directly use new recovery code for mmu faults drm/nouveau/fifo/gk104-: reset all engines a killed channel is still active on drm/nouveau/fifo/gk104-: refactor recovery code drm/nouveau/fifo/gk104-: better detection of chid when parsing engine status drm/nouveau/fifo/gk104-: separate out engine status parsing drm/nouveau/fifo: add an api for initiating channel recovery drm/nouveau/top: add function to translate subdev index to mmu fault id drm/nouveau/gr/gf100-: implement chsw_load() method drm/nouveau/gr: implement chsw_load() method drm/nouveau/core: add engine method to assist in determining chsw direction ...
2017-02-17drm/nouveau/tmr: provide backtrace when a timeout is hitBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/pci/g92: Fix rearmKarol Herbst
704a6c008b7942bb7f30bb43d2a6bcad7f543662 broke pci msi rearm for g92 GPUs. g92 needs the nv46_pci_msi_rearm, where g94+ gpus used nv40_pci_msi_rearm. Reported-by: Andrew Randrianasulu <randrianasulu@gmail.com> Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: stable@vger.kernel.org
2017-02-17drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in ↵Martin Peres
the vbios This seems to be absolutely necessary for a lot of NV40. Reported-by: gsgf on IRC/freenode Signed-off-by: Martin Peres <martin.peres@free.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/hwmon: expose power_max and power_critKarol Herbst
Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/iccsense: Parse max and crit power levelKarol Herbst
Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/bios/power_budget: Add basic power budget parsingKarol Herbst
v2: Set entry to 0xff if not found Add cap entry for ver 0x30 tables Rework to fix memory leak v3: More error checks Simplify check for invalid entries v4: disable for ver 0x10 for now move assignments after the second last return Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: preempt recoveryBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: trigger mmu fault before attempting engine recoveryBen Skeggs
Greatly improves the chances of recovering the GPU from a CTXSW_TIMEOUT. Tested with piglit's arb_shader_image_load_store-atomicity, which causes GR to hang in such a way that recovery failed (CTXSW_TIMEOUT continually re-triggers). Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: ACK SCHED_ERROR before attempting CTXSW_TIMEOUT ↵Ben Skeggs
recovery Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: directly use new recovery code for ctxsw timeoutBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: directly use new recovery code for mmu faultsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: reset all engines a killed channel is still active onBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: refactor recovery codeBen Skeggs
This will serve as a basis for implementing some improvements to how we recover the GPU from channel errors. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: better detection of chid when parsing engine statusBen Skeggs
The previous commit simply changes the interface, but should result in the same behaviour as previously. This commit has been split out from it as it can result in a different channel being selected. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gk104-: separate out engine status parsingBen Skeggs
We'll be wanting to reuse this logic in more places. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo: add an api for initiating channel recoveryBen Skeggs
This will be used by callers outside of fifo interrupt handlers. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/top: add function to translate subdev index to mmu fault idBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/gr/gf100-: implement chsw_load() methodBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/gr: implement chsw_load() methodBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/core: add engine method to assist in determining chsw directionBen Skeggs
FIFO gives us load/save/switch status, and we need to be able to determine which direction a "switch" is failing during channel recovery. In order to do this, we apparently need to query the engine itself. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau: check for dead channel before trying to idleBen Skeggs
This prevents *very* long waits while attempting to destroy channels after a fault has occurred. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau: request notifications for channels that have been killedBen Skeggs
These will be used to improve error recovery behaviour. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/gf100-: provide notification to user if channel is killedBen Skeggs
There are instances (such as non-recoverable GPU page faults) where NVKM decides that a channel's context is no longer viable, and will be removed from the runlist. This commit notifies the owner of the channel when this happens, so it has the opportunity to take some kind of recovery action instead of hanging. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo/g84-: rename non-stall interrupt eventBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/fifo: tidy up channel creation event codeBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/core: increase maximum number of notifies that a client can requestBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/drm/nouveau/led: prevent a possible use-after-freeMartin Peres
If the led class registration fails, we free drm->led but do not reset it to NULL, which means that the suspend/resume/fini function will act as if everything went well in init() and will likely crash the kernel. This patch adds the missing drm->led = NULL. Reported-by: Emmanuel Pescosta <emmanuelpescosta099@gmail.com> Signed-off-by: Martin Peres <martin.peres@free.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17drm/nouveau/pci/g92: Enable changing pcie link speedsKarol Herbst
Tested on a G92, seems to work. Confirmed by 8 mmiotraces. Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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