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2014-10-18Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block layer driver update from Jens Axboe: "This is the block driver pull request for 3.18. Not a lot in there this round, and nothing earth shattering. - A round of drbd fixes from the linbit team, and an improvement in asender performance. - Removal of deprecated (and unused) IRQF_DISABLED flag in rsxx and hd from Michael Opdenacker. - Disable entropy collection from flash devices by default, from Mike Snitzer. - A small collection of xen blkfront/back fixes from Roger Pau Monné and Vitaly Kuznetsov" * 'for-3.18/drivers' of git://git.kernel.dk/linux-block: block: disable entropy contributions for nonrot devices xen, blkfront: factor out flush-related checks from do_blkif_request() xen-blkback: fix leak on grant map error path xen/blkback: unmap all persistent grants when frontend gets disconnected rsxx: Remove deprecated IRQF_DISABLED block: hd: remove deprecated IRQF_DISABLED drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks drbd: compute the end before rb_insert_augmented() drbd: Add missing newline in resync progress display in /proc/drbd drbd: reduce lock contention in drbd_worker drbd: Improve asender performance drbd: Get rid of the WORK_PENDING macro drbd: Get rid of the __no_warn and __cond_lock macros drbd: Avoid inconsistent locking warning drbd: Remove superfluous newline from "resync_extents" debugfs entry. drbd: Use consistent names for all the bi_end_io callbacks drbd: Use better variable names
2014-10-18Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull core block layer changes from Jens Axboe: "This is the core block IO pull request for 3.18. Apart from the new and improved flush machinery for blk-mq, this is all mostly bug fixes and cleanups. - blk-mq timeout updates and fixes from Christoph. - Removal of REQ_END, also from Christoph. We pass it through the ->queue_rq() hook for blk-mq instead, freeing up one of the request bits. The space was overly tight on 32-bit, so Martin also killed REQ_KERNEL since it's no longer used. - blk integrity updates and fixes from Martin and Gu Zheng. - Update to the flush machinery for blk-mq from Ming Lei. Now we have a per hardware context flush request, which both cleans up the code should scale better for flush intensive workloads on blk-mq. - Improve the error printing, from Rob Elliott. - Backing device improvements and cleanups from Tejun. - Fixup of a misplaced rq_complete() tracepoint from Hannes. - Make blk_get_request() return error pointers, fixing up issues where we NULL deref when a device goes bad or missing. From Joe Lawrence. - Prep work for drastically reducing the memory consumption of dm devices from Junichi Nomura. This allows creating clone bio sets without preallocating a lot of memory. - Fix a blk-mq hang on certain combinations of queue depths and hardware queues from me. - Limit memory consumption for blk-mq devices for crash dump scenarios and drivers that use crazy high depths (certain SCSI shared tag setups). We now just use a single queue and limited depth for that" * 'for-3.18/core' of git://git.kernel.dk/linux-block: (58 commits) block: Remove REQ_KERNEL blk-mq: allocate cpumask on the home node bio-integrity: remove the needless fail handle of bip_slab creating block: include func name in __get_request prints block: make blk_update_request print prefix match ratelimited prefix blk-merge: don't compute bi_phys_segments from bi_vcnt for cloned bio block: fix alignment_offset math that assumes io_min is a power-of-2 blk-mq: Make bt_clear_tag() easier to read blk-mq: fix potential hang if rolling wakeup depth is too high block: add bioset_create_nobvec() block: use bio_clone_fast() in blk_rq_prep_clone() block: misplaced rq_complete tracepoint sd: Honor block layer integrity handling flags block: Replace strnicmp with strncasecmp block: Add T10 Protection Information functions block: Don't merge requests if integrity flags differ block: Integrity checksum flag block: Relocate bio integrity flags block: Add a disk flag to block integrity profile block: Add prefix to block integrity profile flags ...
2014-10-18Merge tag 'virtio-next-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio updates from Rusty Russell: "One cc: stable commit, the rest are a series of minor cleanups which have been sitting in MST's tree during my vacation. I changed a function name and made one trivial change, then they spent two days in linux-next" * tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (25 commits) virtio-rng: refactor probe error handling virtio_scsi: drop scan callback virtio_balloon: enable VQs early on restore virtio_scsi: fix race on device removal virito_scsi: use freezable WQ for events virtio_net: enable VQs early on restore virtio_console: enable VQs early on restore virtio_scsi: enable VQs early on restore virtio_blk: enable VQs early on restore virtio_scsi: move kick event out from virtscsi_init virtio_net: fix use after free on allocation failure 9p/trans_virtio: enable VQs early virtio_console: enable VQs early virtio_blk: enable VQs early virtio_net: enable VQs early virtio: add API to enable VQs early virtio_net: minor cleanup virtio-net: drop config_mutex virtio_net: drop config_enable virtio-blk: drop config_mutex ...
2014-10-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Include fixes for netrom and dsa (Fabian Frederick and Florian Fainelli) 2) Fix FIXED_PHY support in stmmac, from Giuseppe CAVALLARO. 3) Several SKB use after free fixes (vxlan, openvswitch, vxlan, ip_tunnel, fou), from Li ROngQing. 4) fec driver PTP support fixes from Luwei Zhou and Nimrod Andy. 5) Use after free in virtio_net, from Michael S Tsirkin. 6) Fix flow mask handling for megaflows in openvswitch, from Pravin B Shelar. 7) ISDN gigaset and capi bug fixes from Tilman Schmidt. 8) Fix route leak in ip_send_unicast_reply(), from Vasily Averin. 9) Fix two eBPF JIT bugs on x86, from Alexei Starovoitov. 10) TCP_SKB_CB() reorganization caused a few regressions, fixed by Cong Wang and Eric Dumazet. 11) Don't overwrite end of SKB when parsing malformed sctp ASCONF chunks, from Daniel Borkmann. 12) Don't call sock_kfree_s() with NULL pointers, this function also has the side effect of adjusting the socket memory usage. From Cong Wang. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (90 commits) bna: fix skb->truesize underestimation net: dsa: add includes for ethtool and phy_fixed definitions openvswitch: Set flow-key members. netrom: use linux/uaccess.h dsa: Fix conversion from host device to mii bus tipc: fix bug in bundled buffer reception ipv6: introduce tcp_v6_iif() sfc: add support for skb->xmit_more r8152: return -EBUSY for runtime suspend ipv4: fix a potential use after free in fou.c ipv4: fix a potential use after free in ip_tunnel_core.c hyperv: Add handling of IP header with option field in netvsc_set_hash() openvswitch: Create right mask with disabled megaflows vxlan: fix a free after use openvswitch: fix a use after free ipv4: dst_entry leak in ip_send_unicast_reply() ipv4: clean up cookie_v4_check() ipv4: share tcp_v4_save_options() with cookie_v4_check() ipv4: call __ip_options_echo() in cookie_v4_check() atm: simplify lanai.c by using module_pci_driver ...
2014-10-15cxgb4i : Fix -Wmaybe-uninitialized warning.Anish Bhatt
Identified by kbuild test robot. csk family is always set to be AF_INET or AF_INET6, so skb will always be initialized to some value but there is no harm in silencing the warning anyways. Signed-off-by: Anish Bhatt <anish@chelsio.com> Fixes : f42bb57c61fd ('cxgb4i : Fix -Wunused-function warning') Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15cxgb4i: Remove duplicate call to dst_neigh_lookup()Anish Bhatt
There is an extra call to dst_neigh_lookup() leftover in cxgb4i that can cause an unreleased refcnt issue. Remove extraneous call. Signed-off-by: Anish Bhatt <anish@chelsio.com> Fixes : 759a0cc5a3e1b ('cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api') Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15cxgb4i : Fix -Wunused-function warningAnish Bhatt
A bunch of ipv6 related code is left on by default. While this causes no compilation issues, there is no need to have this enabled by default. Guard with an ipv6 check, which also takes care of a -Wunused-function warning. Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15cxgb4i : Remove duplicated CLIP handling codeAnish Bhatt
cxgb4 already handles CLIP updates from a previous changeset for iw_cxgb4, there is no need to have this functionality in cxgb4i. Remove duplicated code Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15virtio_scsi: drop scan callbackMichael S. Tsirkin
Enable VQs early like we do for restore. This makes it possible to drop the scan callback, moving scanning into the probe function, and making code simpler. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-10-15virtio_scsi: fix race on device removalMichael S. Tsirkin
We cancel event work on device removal, but an interrupt could trigger immediately after this, and queue it again. To fix, set a flag. Loosely based on patch by Paolo Bonzini Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-10-15virito_scsi: use freezable WQ for eventsPaolo Bonzini
Michael S. Tsirkin noticed a race condition: we reset device on freeze, but system WQ is still running so it might try adding bufs to a VQ meanwhile. To fix, switch to handling events from the freezable WQ. Reported-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-10-15virtio_scsi: enable VQs early on restoreMichael S. Tsirkin
virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after restore returns, virtio scsi violated this rule on restore by kicking event vq within restore. To fix, call virtio_device_ready before using event queue. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-10-15virtio_scsi: move kick event out from virtscsi_initMichael S. Tsirkin
We currently kick event within virtscsi_init, before host is fully initialized. This can in theory confuse guest if device consumes the buffers immediately. To fix, move virtscsi_kick_event_all out to scan/restore. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-10-14scsi: replace strnicmp with strncasecmpRasmus Villemoes
The kernel used to contain two functions for length-delimited, case-insensitive string comparison, strnicmp with correct semantics and a slightly buggy strncasecmp. The latter is the POSIX name, so strnicmp was renamed to strncasecmp, and strnicmp made into a wrapper for the new strncasecmp to avoid breaking existing users. To allow the compat wrapper strnicmp to be removed at some point in the future, and to avoid the extra indirection cost, do s/strnicmp/strncasecmp/g. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-13Merge branch 'sched-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: "The main changes in this cycle were: - Optimized support for Intel "Cluster-on-Die" (CoD) topologies (Dave Hansen) - Various sched/idle refinements for better idle handling (Nicolas Pitre, Daniel Lezcano, Chuansheng Liu, Vincent Guittot) - sched/numa updates and optimizations (Rik van Riel) - sysbench speedup (Vincent Guittot) - capacity calculation cleanups/refactoring (Vincent Guittot) - Various cleanups to thread group iteration (Oleg Nesterov) - Double-rq-lock removal optimization and various refactorings (Kirill Tkhai) - various sched/deadline fixes ... and lots of other changes" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits) sched/dl: Use dl_bw_of() under rcu_read_lock_sched() sched/fair: Delete resched_cpu() from idle_balance() sched, time: Fix build error with 64 bit cputime_t on 32 bit systems sched: Improve sysbench performance by fixing spurious active migration sched/x86: Fix up typo in topology detection x86, sched: Add new topology for multi-NUMA-node CPUs sched/rt: Use resched_curr() in task_tick_rt() sched: Use rq->rd in sched_setaffinity() under RCU read lock sched: cleanup: Rename 'out_unlock' to 'out_free_new_mask' sched: Use dl_bw_of() under RCU read lock sched/fair: Remove duplicate code from can_migrate_task() sched, mips, ia64: Remove __ARCH_WANT_UNLOCKED_CTXSW sched: print_rq(): Don't use tasklist_lock sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock() sched: Fix the task-group check in tg_has_rt_tasks() sched/fair: Leverage the idle state info when choosing the "idlest" cpu sched: Let the scheduler see CPU idle states sched/deadline: Fix inter- exclusive cpusets migrations sched/deadline: Clear dl_entity params when setscheduling to different class sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault() ...
2014-10-11Merge tag 'stable/for-linus-3.18-rc0-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull Xen updates from David Vrabel: "Features and fixes: - Add pvscsi frontend and backend drivers. - Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses. - Try and keep memory contiguous during PV memory setup (reduces SWIOTLB usage). - Allow front/back drivers to use threaded irqs. - Support large initrds in PV guests. - Fix PVH guests in preparation for Xen 4.5" * tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits) xen: remove DEFINE_XENBUS_DRIVER() macro xen/xenbus: Remove BUG_ON() when error string trucated xen/xenbus: Correct the comments for xenbus_grant_ring() x86/xen: Set EFER.NX and EFER.SCE in PVH guests xen: eliminate scalability issues from initrd handling xen: sync some headers with xen tree xen: make pvscsi frontend dependant on xenbus frontend arm{,64}/xen: Remove "EXPERIMENTAL" in the description of the Xen options xen-scsifront: don't deadlock if the ring becomes full x86: remove the Xen-specific _PAGE_IOMAP PTE flag x86/xen: do not use _PAGE_IOMAP PTE flag for I/O mappings x86: skip check for spurious faults for non-present faults xen/efi: Directly include needed headers xen-scsiback: clean up a type issue in scsiback_make_tpg() xen-scsifront: use GFP_ATOMIC under spin_lock MAINTAINERS: Add xen pvscsi maintainer xen-scsiback: Add Xen PV SCSI backend driver xen-scsifront: Add Xen PV SCSI frontend driver xen: Add Xen pvSCSI protocol description xen/events: support threaded irqs for interdomain event channels ...
2014-10-09Merge tag 'pci-v3.18-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "The interesting things here are: - Turn on Config Request Retry Status Software Visibility. This caused hangs last time, but we included a fix this time. - Rework PCI device configuration to use _HPP/_HPX more aggressively - Allow PCI devices to be put into D3cold during system suspend - Add arm64 PCI support - Add APM X-Gene host bridge driver - Add TI Keystone host bridge driver - Add Xilinx AXI host bridge driver More detailed summary: Enumeration - Check Vendor ID only for Config Request Retry Status (Rajat Jain) - Enable Config Request Retry Status when supported (Rajat Jain) - Add generic domain handling (Catalin Marinas) - Generate uppercase hex for modalias interface class (Ricardo Ribalda Delgado) Resource management - Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources() (Yinghai Lu) - Increase IBM ipr SAS Crocodile BARs to at least system page size (Douglas Lehr) PCI device hotplug - Prevent NULL dereference during pciehp probe (Andreas Noever) - Move _HPP & _HPX handling into core (Bjorn Helgaas) - Apply _HPP to PCIe devices as well as PCI (Bjorn Helgaas) - Apply _HPP/_HPX to display devices (Bjorn Helgaas) - Preserve SERR & PARITY settings when applying _HPP/_HPX (Bjorn Helgaas) - Preserve MPS and MRRS settings when applying _HPP/_HPX (Bjorn Helgaas) - Apply _HPP/_HPX to all devices, not just hot-added ones (Bjorn Helgaas) - Fix wait time in pciehp timeout message (Yinghai Lu) - Add more pciehp Slot Control debug output (Yinghai Lu) - Stop disabling pciehp notifications during init (Yinghai Lu) MSI - Remove arch_msi_check_device() (Alexander Gordeev) - Rename pci_msi_check_device() to pci_msi_supported() (Alexander Gordeev) - Move D0 check into pci_msi_check_device() (Alexander Gordeev) - Remove unused kobject from struct msi_desc (Yijing Wang) - Remove "pos" from the struct msi_desc msi_attrib (Yijing Wang) - Add "msi_bus" sysfs MSI/MSI-X control for endpoints (Yijing Wang) - Use __get_cached_msi_msg() instead of get_cached_msi_msg() (Yijing Wang) - Use __read_msi_msg() instead of read_msi_msg() (Yijing Wang) - Use __write_msi_msg() instead of write_msi_msg() (Yijing Wang) Power management - Drop unused runtime PM support code for PCIe ports (Rafael J. Wysocki) - Allow PCI devices to be put into D3cold during system suspend (Rafael J. Wysocki) AER - Add additional AER error strings (Gong Chen) - Make <linux/aer.h> standalone includable (Thierry Reding) Virtualization - Add ACS quirk for Solarflare SFC9120 & SFC9140 (Alex Williamson) - Add ACS quirk for Intel 10G NICs (Alex Williamson) - Add ACS quirk for AMD A88X southbridge (Marti Raudsepp) - Remove unused pci_find_upstream_pcie_bridge(), pci_get_dma_source() (Alex Williamson) - Add device flag helpers (Ethan Zhao) - Assume all Mellanox devices have broken INTx masking (Gavin Shan) Generic host bridge driver - Fix ioport_map() for !CONFIG_GENERIC_IOMAP (Liviu Dudau) - Add pci_register_io_range() and pci_pio_to_address() (Liviu Dudau) - Define PCI_IOBASE as the base of virtual PCI IO space (Liviu Dudau) - Fix the conversion of IO ranges into IO resources (Liviu Dudau) - Add pci_get_new_domain_nr() and of_get_pci_domain_nr() (Liviu Dudau) - Add support for parsing PCI host bridge resources from DT (Liviu Dudau) - Add pci_remap_iospace() to map bus I/O resources (Liviu Dudau) - Add arm64 architectural support for PCI (Liviu Dudau) APM X-Gene - Add APM X-Gene PCIe driver (Tanmay Inamdar) - Add arm64 DT APM X-Gene PCIe device tree nodes (Tanmay Inamdar) Freescale i.MX6 - Probe in module_init(), not fs_initcall() (Lucas Stach) - Delay enabling reference clock for SS until it stabilizes (Tim Harvey) Marvell MVEBU - Fix uninitialized variable in mvebu_get_tgt_attr() (Thomas Petazzoni) NVIDIA Tegra - Make sure the PCIe PLL is really reset (Eric Yuen) - Add error path tegra_msi_teardown_irq() cleanup (Jisheng Zhang) - Fix extended configuration space mapping (Peter Daifuku) - Implement resource hierarchy (Thierry Reding) - Clear CLKREQ# enable on port disable (Thierry Reding) - Add Tegra124 support (Thierry Reding) ST Microelectronics SPEAr13xx - Pass config resource through reg property (Pratyush Anand) Synopsys DesignWare - Use NULL instead of false (Fabio Estevam) - Parse bus-range property from devicetree (Lucas Stach) - Use pci_create_root_bus() instead of pci_scan_root_bus() (Lucas Stach) - Remove pci_assign_unassigned_resources() (Lucas Stach) - Check private_data validity in single place (Lucas Stach) - Setup and clear exactly one MSI at a time (Lucas Stach) - Remove open-coded bitmap operations (Lucas Stach) - Fix configuration base address when using 'reg' (Minghuan Lian) - Fix IO resource end address calculation (Minghuan Lian) - Rename get_msi_data() to get_msi_addr() (Minghuan Lian) - Add get_msi_data() to pcie_host_ops (Minghuan Lian) - Add support for v3.65 hardware (Murali Karicheri) - Fold struct pcie_port_info into struct pcie_port (Pratyush Anand) TI Keystone - Add TI Keystone PCIe driver (Murali Karicheri) - Limit MRSS for all downstream devices (Murali Karicheri) - Assume controller is already in RC mode (Murali Karicheri) - Set device ID based on SoC to support multiple ports (Murali Karicheri) Xilinx AXI - Add Xilinx AXI PCIe driver (Srikanth Thokala) - Fix xilinx_pcie_assign_msi() return value test (Dan Carpenter) Miscellaneous - Clean up whitespace (Quentin Lambert) - Remove assignments from "if" conditions (Quentin Lambert) - Move PCI_VENDOR_ID_VMWARE to pci_ids.h (Francesco Ruggeri) - x86: Mark DMI tables as initialization data (Mathias Krause) - x86: Move __init annotation to the correct place (Mathias Krause) - x86: Mark constants of pci_mmcfg_nvidia_mcp55() as __initconst (Mathias Krause) - x86: Constify pci_mmcfg_probes[] array (Mathias Krause) - x86: Mark PCI BIOS initialization code as such (Mathias Krause) - Parenthesize PCI_DEVID and PCI_VPD_LRDT_ID parameters (Megan Kamiya) - Remove unnecessary variable in pci_add_dynid() (Tobias Klauser)" * tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (109 commits) arm64: dts: Add APM X-Gene PCIe device tree nodes PCI: Add ACS quirk for AMD A88X southbridge devices PCI: xgene: Add APM X-Gene PCIe driver PCI: designware: Remove open-coded bitmap operations PCI/MSI: Remove unnecessary temporary variable PCI/MSI: Use __write_msi_msg() instead of write_msi_msg() MSI/powerpc: Use __read_msi_msg() instead of read_msi_msg() PCI/MSI: Use __get_cached_msi_msg() instead of get_cached_msi_msg() PCI/MSI: Add "msi_bus" sysfs MSI/MSI-X control for endpoints PCI/MSI: Remove "pos" from the struct msi_desc msi_attrib PCI/MSI: Remove unused kobject from struct msi_desc PCI/MSI: Rename pci_msi_check_device() to pci_msi_supported() PCI/MSI: Move D0 check into pci_msi_check_device() PCI/MSI: Remove arch_msi_check_device() irqchip: armada-370-xp: Remove arch_msi_check_device() PCI/MSI/PPC: Remove arch_msi_check_device() arm64: Add architectural support for PCI PCI: Add pci_remap_iospace() to map bus I/O resources of/pci: Add support for parsing PCI host bridge resources from DT of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr() ... Conflicts: arch/arm64/boot/dts/apm-storm.dtsi
2014-10-07Merge tag 'scsi-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This patch set consists of the usual driver updates (megaraid_sas, arcmsr, be2iscsi, lpfc, mpt2sas, mpt3sas, qla2xxx, ufs) plus several assorted fixes and miscellaneous updates (including the pci_msix_enable_range() changes that have been pending for a while)" * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (202 commits) scsi: add a CONFIG_SCSI_MQ_DEFAULT option ufs: definitions for phy interface ufs: tune bkops while power managment events ufs: Add support for clock scaling using devfreq framework ufs: Add freq-table-hz property for UFS device ufs: Add support for clock gating ufs: refactor configuring power mode ufs: add UFS power management support ufs: introduce well known logical unit in ufs ufs: manually add well known logical units ufs: Active Power Mode - configuring bActiveICCLevel ufs: improve init sequence ufs: refactor query descriptor API support ufs: add voting support for host controller power ufs: Add clock initialization support ufs: Add regulator enable support ufs: Allow vendor specific initialization scsi: don't add scsi_device if its already visible scsi: fix the type for well known LUs scsi: fix comment in struct Scsi_Host definition ...
2014-10-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull "trivial tree" updates from Jiri Kosina: "Usual pile from trivial tree everyone is so eagerly waiting for" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Remove MN10300_PROC_MN2WS0038 mei: fix comments treewide: Fix typos in Kconfig kprobes: update jprobe_example.c for do_fork() change Documentation: change "&" to "and" in Documentation/applying-patches.txt Documentation: remove obsolete pcmcia-cs from Changes Documentation: update links in Changes Documentation: Docbook: Fix generated DocBook/kernel-api.xml score: Remove GENERIC_HAS_IOMAP gpio: fix 'CONFIG_GPIO_IRQCHIP' comments tty: doc: Fix grammar in serial/tty dma-debug: modify check_for_stack output treewide: fix errors in printk genirq: fix reference in devm_request_threaded_irq comment treewide: fix synchronize_rcu() in comments checkstack.pl: port to AArch64 doc: queue-sysfs: minor fixes init/do_mounts: better syntax description MIPS: fix comment spelling powerpc/simpleboot: fix comment ...
2014-10-07Merge remote-tracking branch 'scsi-queue/drivers-for-3.18' into for-linusJames Bottomley
2014-10-06xen: remove DEFINE_XENBUS_DRIVER() macroDavid Vrabel
The DEFINE_XENBUS_DRIVER() macro looks a bit weird and causes sparse errors. Replace the uses with standard structure definitions instead. This is similar to pci and usb device registration. Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-10-05Merge 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 two small fixes, both to code which went in during the merge window: cxgb4i has a scheduling in atomic bug in its new ipv6 code and uas fails to work properly with the new scsi-mq code" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: [SCSI] uas: disable use of blk-mq I/O path [SCSI] cxgb4i: avoid holding mutex in interrupt context
2014-10-04block: disable entropy contributions for nonrot devicesMike Snitzer
Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set QUEUE_FLAG_NONROT. Historically, all block devices have automatically made entropy contributions. But as previously stated in commit e2e1a148 ("block: add sysfs knob for turning off disk entropy contributions"): - On SSD disks, the completion times aren't as random as they are for rotational drives. So it's questionable whether they should contribute to the random pool in the first place. - Calling add_disk_randomness() has a lot of overhead. There are more reliable sources for randomness than non-rotational block devices. From a security perspective it is better to err on the side of caution than to allow entropy contributions from unreliable "random" sources. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2014-10-03xen: make pvscsi frontend dependant on xenbus frontendJuergen Gross
The pvscsi frontend driver requires the xenbus frontend driver. Reflect this in Kconfig. Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2014-10-03xen-scsifront: don't deadlock if the ring becomes fullDavid Vrabel
scsifront_action_handler() will deadlock on host->host_lock, if the ring is full and it has to wait for entries to become available. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com>
2014-10-01[SCSI] cxgb4i: avoid holding mutex in interrupt contextAnish Bhatt
cxgbi_inet6addr_handler() can be called in interrupt context, so use rcu protected list while finding netdev. This is observed as a scheduling in atomic oops when running over ipv6. Fixes: fc8d0590d914 ("libcxgbi: Add ipv6 api to driver") Fixes: 759a0cc5a3e1 ("cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api") Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Karen Xie <kxie@chelsio.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-10-01scsi: add a CONFIG_SCSI_MQ_DEFAULT optionChristoph Hellwig
Add a Kconfig option to enable the blk-mq path for SCSI by default to ease testing and deployment in setups that know they benefit from blk-mq. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Robert Elliott <elliott@hp.com> Tested-by: Robert Elliott <elliott@hp.com>
2014-10-01ufs: definitions for phy interfaceDolev Raviv
- Adding some of the definitions missing in unipro.h, including power enumeration. - Read Modify Write Line helper function - Indication for the type of suspend Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: tune bkops while power managment eventsSubhash Jadavani
Add capability to control the auto bkops during suspend. If host explicitly enables the auto bkops (background operation) on device then only device would perform the bkops on its own. If auto bkops is not enabled explicitly and if the device reaches to state where it must do background operation, device would raise the urgent bkops exception event to host and then host will enable the auto bkops on device. This patch adds the option to choose whether auto bkops should be enabled during runtime suspend or not. Since we don't want to keep the device active to perform the non critical bkops, host will enable urgent bkops only. Keep auto-bkops enabled after resume if urgent bkops needed. If device bkops status shows that its in critical need of executing background operations, host should allow the device to continue doing background operations. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Add support for clock scaling using devfreq frameworkSahitya Tummala
The clocks for UFS device will be managed by generic DVFS (Dynamic Voltage and Frequency Scaling) framework within kernel. This devfreq framework works with different governors to scale the clocks. By default, UFS devices uses simple_ondemand governor which scales the clocks up if the load is more than upthreshold and scales down if the load is less than downthreshold. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Add freq-table-hz property for UFS deviceSahitya Tummala
Add freq-table-hz propery for UFS device to keep track of <min max> frequencies supported by UFS clocks. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Add support for clock gatingSahitya Tummala
The UFS controller clocks can be gated after certain period of inactivity, which is typically less than runtime suspend timeout. In addition to clocks the link will also be put into Hibern8 mode to save more power. The clock gating can be turned on by enabling the capability UFSHCD_CAP_CLK_GATING. To enable entering into Hibern8 mode as part of clock gating, set the capability UFSHCD_CAP_HIBERN8_WITH_CLK_GATING. The tracing events for clock gating can be enabled through debugfs as: echo 1 > /sys/kernel/debug/tracing/events/ufs/ufshcd_clk_gating/enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: refactor configuring power modeDolev Raviv
Sometimes, the device shall report its maximum power and speed capabilities, but we might not wish to configure it to use those maximum capabilities. This change adds support for the vendor specific host driver to implement power change notify callback. To enable configuring different power modes (number of lanes, gear number and fast/slow modes) it is necessary to split the configuration stage from the stage that reads the device max power mode. In addition, it is not required to read the configuration more than once, thus the configuration is stored after reading it once. Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: add UFS power management supportSubhash Jadavani
This patch adds support for UFS device and UniPro link power management during runtime/system PM. Main idea is to define multiple UFS low power levels based on UFS device and UFS link power states. This would allow any specific platform or pci driver to choose the best suited low power level during runtime and system suspend based on their power goals. bkops handlig: To put the UFS device in sleep state when bkops is disabled, first query the bkops status from the device and enable bkops on device only if device needs time to perform the bkops. START_STOP handling: Before sending START_STOP_UNIT to the device well-known logical unit (w-lun) to make sure that the device w-lun unit attention condition is cleared. Write protection: UFS device specification allows LUs to be write protected, either permanently or power on write protected. If any LU is power on write protected and if the card is power cycled (by powering off VCCQ and/or VCC rails), LU's write protect status would be lost. So this means those LUs can be written now. To ensures that UFS device is power cycled only if the power on protect is not set for any of the LUs, check if power on write protect is set and if device is in sleep/power-off state & link in inactive state (Hibern8 or OFF state). If none of the Logical Units on UFS device is power on write protected then all UFS device power rails (VCC, VCCQ & VCCQ2) can be turned off if UFS device is in power-off state and UFS link is in OFF state. But current implementation would disable all device power rails even if UFS link is not in OFF state. Low power mode: If UFS link is in OFF state then UFS host controller can be power collapsed to avoid leakage current from it. Note that if UFS host controller is power collapsed, full UFS reinitialization will be required on resume to re-establish the link between host and device. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: introduce well known logical unit in ufsSubhash Jadavani
UFS device may have standard LUs and LUN id could be from 0x00 to 0x7F. UFS device specification use "Peripheral Device Addressing Format" (SCSI SAM-5) for standard LUs. UFS device may also have the Well Known LUs (also referred as W-LU) which again could be from 0x00 to 0x7F. For W-LUs, UFS device specification only allows the "Extended Addressing Format" (SCSI SAM-5) which means the W-LUNs would start from 0xC100 onwards. This means max. LUN number reported from UFS device could be 0xC17F hence this patch advertise the "max_lun" as 0xC17F which will allow SCSI mid layer to detect the W-LUs as well. But once the W-LUs are detected, UFSHCD driver may get the commands with SCSI LUN id upto 0xC17F but UPIU LUN id field is only 8-bit wide so it requires the mapping of SCSI LUN id to UPIU LUN id. This patch also add support for this mapping. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: manually add well known logical unitsSubhash Jadavani
UFS device specification requires the UFS devices to support 4 well known logical units: "REPORT_LUNS" (address: 01h) "UFS Device" (address: 50h) "RPMB" (address: 44h) "BOOT" (address: 30h) UFS device's power management needs to be controlled by "POWER CONDITION" field of SSU (START STOP UNIT) command. But this "power condition" field will take effect only when its sent to "UFS device" well known logical unit hence we require the scsi_device instance to represent this logical unit in order for the UFS host driver to send the SSU command for power management. We also require the scsi_device instance for "RPMB" (Replay Protected Memory Block) LU so user space process can control this LU. User space may also want to have access to BOOT LU. This patch adds the scsi device instances for each of all well known LUs (except "REPORT LUNS" LU). Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Active Power Mode - configuring bActiveICCLevelYaniv Gardi
The maximum power consumption in active is determined by bActiveICCLevel. The configuration is done by reading max current supported by the regulators connected to VCC, VCCQ and VCCQ2 rails on the boards, and reading the current consumption levels from the device for each rails (vcc/vccq/vccq2) using power descriptor. We configure the bActiveICCLevel attribute, with the max value that correspond to the minimum-of(VCC-current-level,VCCQ-current-level, VCCQ2-current-level). In order to minimize resume latency, pre-fetch icc levels and reference clock during initialization and avoid reading them each link startup during resume. Signed-off-by: Raviv Shvili <rshvili@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: improve init sequenceSujit Reddy Thumma
In ->hce_enable_notify() callback the vendor specific initialization may carry out additional DME configuration using UIC commands and hence the UIC command completion interrupt enable bit should be set before the post reset notification. Add retries if the link-startup fails. This is required since due to hardware timing issues, the Uni-Pro link-startup might fail. The UFS HCI recovery procedure contradicts the Uni-Pro sequence. The UFS HCI specifies to resend DME_LINKSTARTUP command after IS.ULLS (link-lost interrupt) is received. The Uni-Pro specifies that if link-startup fails the link is in "down" state. The link-lost is indicated to the DME user only when the link is up. Hence, the UFS HCI recovery procedure of waiting for IS.ULLS and retrying link-startup may not work properly. At the end, if detection fails, power off (disable clocks, regulators, phy) if the UFS device detection fails. This saves power while UFS device is not embedded into the system. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: refactor query descriptor API supportSubhash Jadavani
Currently reading query descriptor is more tightened to each descriptor type. This patch generalize the approach and allows reading any parameter from any query descriptor. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: add voting support for host controller powerRaviv Shvili
Add the support for voting of the regulator powering the host controller logic. Signed-off-by: Raviv Shvili <rshvili@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Add clock initialization supportSujit Reddy Thumma
Add generic clock initialization support for UFSHCD platform driver. The clock info is read from device tree using standard clock bindings. A generic max-clock-frequency-hz property is defined to save information on maximum operating clock frequency the h/w supports. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Add regulator enable supportSujit Reddy Thumma
UFS devices are powered by at most three external power supplies - - VCC - The flash memory core power supply, 2.7V to 3.6V or 1.70V to 1.95V - VCCQ - The controller and I/O power supply, 1.1V to 1.3V - VCCQ2 - Secondary controller and/or I/O power supply, 1.65V to 1.95V For some devices VCCQ or VCCQ2 are optional as they can be generated using internal LDO inside the UFS device. Add DT bindings for voltage regulators that can be controlled from host driver. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01ufs: Allow vendor specific initializationSujit Reddy Thumma
Some vendor specific controller versions might need to configure vendor specific - registers, clocks, voltage regulators etc. to initialize the host controller UTP layer and Uni-Pro stack. Provide some common initialization operations that can be used to configure vendor specifics. The methods can be extended in future, for example, for power mode transitions. The operations are vendor/board specific and hence determined with the help of compatible property in device tree. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01scsi: don't add scsi_device if its already visibleSubhash Jadavani
If LLD has added scsi device (by calling scsi_add_device) before scheduling async scsi_scan_host then scsi_finish_async_scan() will end up calling scsi_sysfs_add_sdev for scsi device which was already added by LLD. This patch fixes this issue by skipping the call to scsi_sysfs_add_sdev() if it's already visible to rest of the kernel. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-10-01scsi: fix the type for well known LUsSubhash Jadavani
Some devices may respond with wrong type for well-known logical units. This patch forces well-known type for devices which doesn't report it correct. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30sd: Honor block layer integrity handling flagsMartin K. Petersen
A set of flags introduced in the block layer enable better control over how protection information is handled. These flags are useful for both error injection and data recovery purposes. Checking can be enabled and disabled for controller and disk, and the guard tag format is now a per-I/O property. Update sd_protect_op to communicate the relevant information to the low-level device driver via a set of flags in scsi_cmnd. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2014-09-30scsi_debug: deadlock between completions and surprise module removalDouglas Gilbert
A deadlock has been reported when the completion of SCSI commands (simulated by a timer) was surprised by a module removal. This patch removes one half of the offending locks around timer deletions. This fix is applied both to stop_all_queued() which is were the deadlock was discovered and stop_queued_cmnd() which has very similar logic. This patch should be applied both to the lk 3.17 tree and Christoph's drivers-for-3.18 tree. Tested-and-reported-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi: check ip buffer before copyingMike Christie
Dan Carpenter found a issue where be2iscsi would copy the ip from userspace to the driver buffer before checking the len of the data being copied: http://marc.info/?l=linux-scsi&m=140982651504251&w=2 This patch just has us only copy what we the driver buffer can support. Cc: <stable@vger.kernel.org> Tested-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30iscsi_tcp: export port being usedMike Christie
This just has iscsi_tcp support ISCSI_PARAM_LOCAL_PORT which exports the local port being used by the iscsi connection. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi : Bump the driver versionJohn Soni Jose
Bump the driver version Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>