1. 05 Oct, 2016 9 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse · edadd0e5
      Linus Torvalds authored
      Pull fuse updates from Miklos Szeredi:
       "This adds POSIX ACL permission checking to the fuse kernel module.
      
        In addition there are minor bug fixes as well as cleanups"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
        fuse: limit xattr returned size
        fuse: remove duplicate cs->offset assignment
        fuse: don't use fuse_ioctl_copy_user() helper
        fuse_ioctl_copy_user(): don't open-code copy_page_{to,from}_iter()
        fuse: get rid of fc->flags
        fuse: use timespec64
        fuse: don't use ->d_time
        fuse: Add posix ACL support
        fuse: handle killpriv in userspace fs
        fuse: fix killing s[ug]id in setattr
        fuse: invalidate dir dentry after chmod
        fuse: Use generic xattr ops
        fuse: listxattr: verify xattr list
      edadd0e5
    • Linus Torvalds's avatar
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · 3fb75cb8
      Linus Torvalds authored
      Pull misc filesystem and quota fixes from Jan Kara:
       "Some smaller udf, ext2, quota & reiserfs fixes"
      
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
        ext2: Unmap metadata when zeroing blocks
        udf: don't bother with full-page write optimisations in adinicb case
        reiserfs: Unlock superblock before calling reiserfs_quota_on_mount()
        udf: Remove useless check in udf_adinicb_write_begin()
        quota: fill in Q_XGETQSTAT inode information for inactive quotas
        ext2: Check return value from ext2_get_group_desc()
      3fb75cb8
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next · 687ee0ad
      Linus Torvalds authored
      Pull networking updates from David Miller:
      
       1) BBR TCP congestion control, from Neal Cardwell, Yuchung Cheng and
          co. at Google. https://lwn.net/Articles/701165/
      
       2) Do TCP Small Queues for retransmits, from Eric Dumazet.
      
       3) Support collect_md mode for all IPV4 and IPV6 tunnels, from Alexei
          Starovoitov.
      
       4) Allow cls_flower to classify packets in ip tunnels, from Amir Vadai.
      
       5) Support DSA tagging in older mv88e6xxx switches, from Andrew Lunn.
      
       6) Support GMAC protocol in iwlwifi mwm, from Ayala Beker.
      
       7) Support ndo_poll_controller in mlx5, from Calvin Owens.
      
       8) Move VRF processing to an output hook and allow l3mdev to be
          loopback, from David Ahern.
      
       9) Support SOCK_DESTROY for UDP sockets. Also from David Ahern.
      
      10) Congestion control in RXRPC, from David Howells.
      
      11) Support geneve RX offload in ixgbe, from Emil Tantilov.
      
      12) When hitting pressure for new incoming TCP data SKBs, perform a
          partial rathern than a full purge of the OFO queue (which could be
          huge). From Eric Dumazet.
      
      13) Convert XFRM state and policy lookups to RCU, from Florian Westphal.
      
      14) Support RX network flow classification to igb, from Gangfeng Huang.
      
      15) Hardware offloading of eBPF in nfp driver, from Jakub Kicinski.
      
      16) New skbmod packet action, from Jamal Hadi Salim.
      
      17) Remove some inefficiencies in snmp proc output, from Jia He.
      
      18) Add FIB notifications to properly propagate route changes to
          hardware which is doing forwarding offloading. From Jiri Pirko.
      
      19) New dsa driver for qca8xxx chips, from John Crispin.
      
      20) Implement RFC7559 ipv6 router solicitation backoff, from Maciej
          Żenczykowski.
      
      21) Add L3 mode to ipvlan, from Mahesh Bandewar.
      
      22) Support 802.1ad in mlx4, from Moshe Shemesh.
      
      23) Support hardware LRO in mediatek driver, from Nelson Chang.
      
      24) Add TC offloading to mlx5, from Or Gerlitz.
      
      25) Convert various drivers to ethtool ksettings interfaces, from
          Philippe Reynes.
      
      26) TX max rate limiting for cxgb4, from Rahul Lakkireddy.
      
      27) NAPI support for ath10k, from Rajkumar Manoharan.
      
      28) Support XDP in mlx5, from Rana Shahout and Saeed Mahameed.
      
      29) UDP replicast support in TIPC, from Richard Alpe.
      
      30) Per-queue statistics for qed driver, from Sudarsana Reddy Kalluru.
      
      31) Support BQL in thunderx driver, from Sunil Goutham.
      
      32) TSO support in alx driver, from Tobias Regnery.
      
      33) Add stream parser engine and use it in kcm.
      
      34) Support async DHCP replies in ipconfig module, from Uwe
          Kleine-König.
      
      35) DSA port fast aging for mv88e6xxx driver, from Vivien Didelot.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1715 commits)
        mlxsw: switchx2: Fix misuse of hard_header_len
        mlxsw: spectrum: Fix misuse of hard_header_len
        net/faraday: Stop NCSI device on shutdown
        net/ncsi: Introduce ncsi_stop_dev()
        net/ncsi: Rework the channel monitoring
        net/ncsi: Allow to extend NCSI request properties
        net/ncsi: Rework request index allocation
        net/ncsi: Don't probe on the reserved channel ID (0x1f)
        net/ncsi: Introduce NCSI_RESERVED_CHANNEL
        net/ncsi: Avoid unused-value build warning from ia64-linux-gcc
        net: Add netdev all_adj_list refcnt propagation to fix panic
        net: phy: Add Edge-rate driver for Microsemi PHYs.
        vmxnet3: Wake queue from reset work
        i40e: avoid NULL pointer dereference and recursive errors on early PCI error
        qed: Add RoCE ll2 & GSI support
        qed: Add support for memory registeration verbs
        qed: Add support for QP verbs
        qed: PD,PKEY and CQ verb support
        qed: Add support for RoCE hw init
        qede: Add qedr framework
        ...
      687ee0ad
    • Johannes Weiner's avatar
      mm: filemap: fix mapping->nrpages double accounting in fuse · 3ddf40e8
      Johannes Weiner authored
      Commit 22f2ac51 ("mm: workingset: fix crash in shadow node shrinker
      caused by replace_page_cache_page()") switched replace_page_cache() from
      raw radix tree operations to page_cache_tree_insert() but didn't take
      into account that the latter function, unlike the raw radix tree op,
      handles mapping->nrpages.  As a result, that counter is bumped for each
      page replacement rather than balanced out even.
      
      The mapping->nrpages counter is used to skip needless radix tree walks
      when invalidating, truncating, syncing inodes without pages, as well as
      statistics for userspace.  Since the error is positive, we'll do more
      page cache tree walks than necessary; we won't miss a necessary one.
      And we'll report more buffer pages to userspace than there are.  The
      error is limited to fuse inodes.
      
      Fixes: 22f2ac51 ("mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()")
      Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Miklos Szeredi <miklos@szeredi.hu>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3ddf40e8
    • Johannes Weiner's avatar
      mm: filemap: don't plant shadow entries without radix tree node · d3798ae8
      Johannes Weiner authored
      When the underflow checks were added to workingset_node_shadow_dec(),
      they triggered immediately:
      
        kernel BUG at ./include/linux/swap.h:276!
        invalid opcode: 0000 [#1] SMP
        Modules linked in: isofs usb_storage fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6
         soundcore wmi acpi_als pinctrl_sunrisepoint kfifo_buf tpm_tis industrialio acpi_pad pinctrl_intel tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt
        CPU: 0 PID: 20929 Comm: blkid Not tainted 4.8.0-rc8-00087-gbe67d60b #1
        Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016
        task: ffff8faa93ecd940 task.stack: ffff8faa7f478000
        RIP: page_cache_tree_insert+0xf1/0x100
        Call Trace:
          __add_to_page_cache_locked+0x12e/0x270
          add_to_page_cache_lru+0x4e/0xe0
          mpage_readpages+0x112/0x1d0
          blkdev_readpages+0x1d/0x20
          __do_page_cache_readahead+0x1ad/0x290
          force_page_cache_readahead+0xaa/0x100
          page_cache_sync_readahead+0x3f/0x50
          generic_file_read_iter+0x5af/0x740
          blkdev_read_iter+0x35/0x40
          __vfs_read+0xe1/0x130
          vfs_read+0x96/0x130
          SyS_read+0x55/0xc0
          entry_SYSCALL_64_fastpath+0x13/0x8f
        Code: 03 00 48 8b 5d d8 65 48 33 1c 25 28 00 00 00 44 89 e8 75 19 48 83 c4 18 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 41 bd ef ff ff ff eb d7 <0f> 0b e8 88 68 ef ff 0f 1f 84 00
        RIP  page_cache_tree_insert+0xf1/0x100
      
      This is a long-standing bug in the way shadow entries are accounted in
      the radix tree nodes. The shrinker needs to know when radix tree nodes
      contain only shadow entries, no pages, so node->count is split in half
      to count shadows in the upper bits and pages in the lower bits.
      
      Unfortunately, the radix tree implementation doesn't know of this and
      assumes all entries are in node->count. When there is a shadow entry
      directly in root->rnode and the tree is later extended, the radix tree
      implementation will copy that entry into the new node and and bump its
      node->count, i.e. increases the page count bits. Once the shadow gets
      removed and we subtract from the upper counter, node->count underflows
      and triggers the warning. Afterwards, without node->count reaching 0
      again, the radix tree node is leaked.
      
      Limit shadow entries to when we have actual radix tree nodes and can
      count them properly. That means we lose the ability to detect refaults
      from files that had only the first page faulted in at eviction time.
      
      Fixes: 449dd698 ("mm: keep page cache radix tree nodes in check")
      Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Reported-and-tested-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d3798ae8
    • David S. Miller's avatar
      Merge branch 'mlxsw-fixes' · 03a1eabc
      David S. Miller authored
      Jiri Pirko says:
      
      ====================
      mlxsw: Couple of fixes
      
      Couple of fixes from Yotam.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      03a1eabc
    • Yotam Gigi's avatar
      mlxsw: switchx2: Fix misuse of hard_header_len · 251d41c5
      Yotam Gigi authored
      In order to specify that the mlxsw switchx2 driver needs additional
      headroom for packets, there have been use of the hard_header_len field of
      the netdevice struct.
      
      This commit changes that to use needed_headroom instead, as this is the
      correct way to do that.
      
      Fixes: 31557f0f ("mlxsw: Introduce Mellanox SwitchX-2 ASIC support")
      Signed-off-by: default avatarYotam Gigi <yotamg@mellanox.com>
      Acked-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      251d41c5
    • Yotam Gigi's avatar
      mlxsw: spectrum: Fix misuse of hard_header_len · feb7d387
      Yotam Gigi authored
      In order to specify that the mlxsw spectrum driver needs additional
      headroom for packets, there have been use of the hard_header_len field of
      the netdevice struct.
      
      This commit changes that to use needed_headroom instead, as this is the
      correct way to do that.
      
      Fixes: 56ade8fe ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
      Signed-off-by: default avatarYotam Gigi <yotamg@mellanox.com>
      Acked-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      feb7d387
    • David S. Miller's avatar
      Merge tag 'mac80211-next-for-davem-2016-10-04' of... · 1ebf8b42
      David S. Miller authored
      Merge tag 'mac80211-next-for-davem-2016-10-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
      
      Johannes Berg says:
      
      ====================
      This time around, we have
       * Neighbor Awareness Networking (NAN) APIs
       * a fix for a previous patch that caused memory corruption
         in wireless extensions key settings
       * beacon rate configuration for AP and mesh
       * memory limits for mac80211's internal TXQs
       * a (fairly involved) fix for the TXQ vs. crypto problems
       * direct cfg80211 driver API for WEP keys
      
      This also pulls in net-next to fix the merge conflicts, see
      the merge commit for more details.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1ebf8b42
  2. 04 Oct, 2016 31 commits
    • Linus Torvalds's avatar
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security · a3443cda
      Linus Torvalds authored
      Pull security subsystem updates from James Morris:
      
        SELinux/LSM:
         - overlayfs support, necessary for container filesystems
      
        LSM:
         - finally remove the kernel_module_from_file hook
      
        Smack:
         - treat signal delivery as an 'append' operation
      
        TPM:
         - lots of bugfixes & updates
      
        Audit:
         - new audit data type: LSM_AUDIT_DATA_FILE
      
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (47 commits)
        Revert "tpm/tpm_crb: implement tpm crb idle state"
        Revert "tmp/tpm_crb: fix Intel PTT hw bug during idle state"
        Revert "tpm/tpm_crb: open code the crb_init into acpi_add"
        Revert "tmp/tpm_crb: implement runtime pm for tpm_crb"
        lsm,audit,selinux: Introduce a new audit data type LSM_AUDIT_DATA_FILE
        tmp/tpm_crb: implement runtime pm for tpm_crb
        tpm/tpm_crb: open code the crb_init into acpi_add
        tmp/tpm_crb: fix Intel PTT hw bug during idle state
        tpm/tpm_crb: implement tpm crb idle state
        tpm: add check for minimum buffer size in tpm_transmit()
        tpm: constify TPM 1.x header structures
        tpm/tpm_crb: fix the over 80 characters checkpatch warring
        tpm/tpm_crb: drop useless cpu_to_le32 when writing to registers
        tpm/tpm_crb: cache cmd_size register value.
        tmp/tpm_crb: drop include to platform_device
        tpm/tpm_tis: remove unused itpm variable
        tpm_crb: fix incorrect values of cmdReady and goIdle bits
        tpm_crb: refine the naming of constants
        tpm_crb: remove wmb()'s
        tpm_crb: fix crb_req_canceled behavior
        ...
      a3443cda
    • Linus Torvalds's avatar
      Merge branch 'stable-4.9' of git://git.infradead.org/users/pcmoore/audit · 3cd013ab
      Linus Torvalds authored
      Pull audit updates from Paul Moore:
       "Another relatively small pull request for v4.9 with just two patches.
      
        The patch from Richard updates the list of features we support and
        report back to userspace; this should have been sent earlier with the
        rest of the v4.8 patches but it got lost in my inbox.
      
        The second patch fixes a problem reported by our Android friends where
        we weren't very consistent in recording PIDs"
      
      * 'stable-4.9' of git://git.infradead.org/users/pcmoore/audit:
        audit: add exclude filter extension to feature bitmap
        audit: consistently record PIDs with task_tgid_nr()
      3cd013ab
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · e46cae44
      Linus Torvalds authored
      Pull s390 updates from Martin Schwidefsky:
       "The new features and main improvements in this merge for v4.9
      
         - Support for the UBSAN sanitizer
      
         - Set HAVE_EFFICIENT_UNALIGNED_ACCESS, it improves the code in some
           places
      
         - Improvements for the in-kernel fpu code, in particular the overhead
           for multiple consecutive in kernel fpu users is recuded
      
         - Add a SIMD implementation for the RAID6 gen and xor operations
      
         - Add RAID6 recovery based on the XC instruction
      
         - The PCI DMA flush logic has been improved to increase the speed of
           the map / unmap operations
      
         - The time synchronization code has seen some updates
      
        And bug fixes all over the place"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
        s390/con3270: fix insufficient space padding
        s390/con3270: fix use of uninitialised data
        MAINTAINERS: update DASD maintainer
        s390/cio: fix accidental interrupt enabling during resume
        s390/dasd: add missing \n to end of dev_err messages
        s390/config: Enable config options for Docker
        s390/dasd: make query host access interruptible
        s390/dasd: fix panic during offline processing
        s390/dasd: fix hanging offline processing
        s390/pci_dma: improve lazy flush for unmap
        s390/pci_dma: split dma_update_trans
        s390/pci_dma: improve map_sg
        s390/pci_dma: simplify dma address calculation
        s390/pci_dma: remove dma address range check
        iommu/s390: simplify registration of I/O address translation parameters
        s390: migrate exception table users off module.h and onto extable.h
        s390: export header for CLP ioctl
        s390/vmur: fix irq pointer dereference in int handler
        s390/dasd: add missing KOBJ_CHANGE event for unformatted devices
        s390: enable UBSAN
        ...
      e46cae44
    • Linus Torvalds's avatar
      Merge tag 'docs-4.9' of git://git.lwn.net/linux · 02bafd96
      Linus Torvalds authored
      Pull documentation updates from Jonathan Corbet:
       "This is the documentation update pull for the 4.9 merge window.
      
        The Sphinx transition is still creating a fair amount of work. Here we
        have a number of fixes and, importantly, a proper PDF output solution,
        thanks to Jani Nikula, Mauro Carvalho Chehab and Markus Heiser.
      
        I've started a couple of new books: a driver API book (based on the
        old device-drivers.tmpl) and a development tools book. Both are meant
        to show how we can integrate together our existing documentation into
        a more coherent and accessible whole. It involves moving some stuff
        around and formatting changes, but, I think, the results are worth it.
        The good news is that most of our existing Documentation/*.txt files
        are *almost* in RST format already; the amount of messing around
        required is minimal.
      
        And, of course, there's the usual set of updates, typo fixes, and
        more"
      
      * tag 'docs-4.9' of git://git.lwn.net/linux: (120 commits)
        URL changed for Linux Foundation TAB
        dax : Fix documentation with respect to struct pages
        iio: Documentation: Correct the path used to create triggers.
        docs: Remove space-before-label guidance from CodingStyle
        docs-rst: add inter-document cross references
        Documentation/email-clients.txt: convert it to ReST markup
        Documentation/kernel-docs.txt: reorder based on timestamp
        Documentation/kernel-docs.txt: Add dates for online docs
        Documentation/kernel-docs.txt: get rid of broken docs
        Documentation/kernel-docs.txt: move in-kernel docs
        Documentation/kernel-docs.txt: remove more legacy references
        Documentation/kernel-docs.txt: add two published books
        Documentation/kernel-docs.txt: sort books per publication date
        Documentation/kernel-docs.txt: adjust LDD references
        Documentation/kernel-docs.txt: some improvements on the ReST output
        Documentation/kernel-docs.txt: Consistent indenting: 4 spaces
        Documentation/kernel-docs.txt: Add 4 paper/book references
        Documentation/kernel-docs.txt: Improve layouting of book list
        Documentation/kernel-docs.txt: Remove offline or outdated entries
        docs: Clean up bare :: lines
        ...
      02bafd96
    • Linus Torvalds's avatar
      Merge tag 'jfs-4.9' of git://github.com/kleikamp/linux-shaggy · 2105b9ff
      Linus Torvalds authored
      Pull jfs updates from David Kleikamp:
       "Minor jfs updates"
      
      * tag 'jfs-4.9' of git://github.com/kleikamp/linux-shaggy:
        jfs: Simplify code
        jfs: jump to error_out when filemap_{fdatawait, write_and_wait} fails
      2105b9ff
    • Linus Torvalds's avatar
      Merge tag 'gfs2-4.8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 · 5fdf4939
      Linus Torvalds authored
      Pull gfs2 updates from Bob Peterson:
       "We've only got six GFS2 patches for this merge window.  In patch
        order:
      
         - Fabian Frederick submitted a nice cleanup that uses the BIT macro
           rather than bit shifting.
      
         - Andreas Gruenbacher contributed a patch that fixes a long-standing
           annoyance whereby GFS2 warned about dirty pages.
      
         - Andreas also fixed a problem with the recent extended attribute
           readahead feature.
      
         - Chao Yu contributed a patch that checks the return code from
           function register_shrinker and reacts accordingly. Previously, it
           was not checked.
      
         - Andreas Gruenbacher also fixed a problem whereby incore file
           timestamps were forgotten if the file was invalidated. This merely
           moves the assignment inside the inode glock where it belongs.
      
         - Andreas also fixed a problem where incore timestamps were not
           initialized"
      
      * tag 'gfs2-4.8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
        gfs2: Initialize atime of I_NEW inodes
        gfs2: Update file times after grabbing glock
        gfs2: fix to detect failure of register_shrinker
        gfs2: Fix extended attribute readahead optimization
        gfs2: Remove dirty buffer warning from gfs2_releasepage
        GFS2: use BIT() macro
      5fdf4939
    • Linus Torvalds's avatar
      Merge tag 'locks-v4.9-1' of git://git.samba.org/jlayton/linux · c35bcfd8
      Linus Torvalds authored
      Pull file locking updates from Jeff Layton:
       "Only a single patch from Nikolay this cycle, with a small change to
        better handle /proc/locks in a containerized host"
      
      * tag 'locks-v4.9-1' of git://git.samba.org/jlayton/linux:
        locks: Filter /proc/locks output on proc pid ns
      c35bcfd8
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · ce866e2d
      Linus Torvalds authored
      Pull hdi1 rdma driver updates from Doug Ledford:
       "This is the first pull request of the 4.9 merge window for the RDMA
        subsystem. It is only the hfi1 driver. It had dependencies on code
        that only landed late in the 4.7-rc cycle (around 4.7-rc7), so putting
        this with my other for-next code would have create an ugly merge of
        lot of 4.7-rc stuff. For that reason, it's being submitted
        individually. It's been through 0day and linux-next"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (37 commits)
        IB/rdmavt: Trivial function comment corrected.
        IB/hfi1: Fix trace of atomic ack
        IB/hfi1: Update SMA ingress checks for response packets
        IB/hfi1: Use EPROM platform configuration read
        IB/hfi1: Add ability to read platform config from the EPROM
        IB/hfi1: Restore EPROM read ability
        IB/hfi1: Document new sysfs entries for hfi1 driver
        IB/hfi1: Add new debugfs sdma_cpu_list file
        IB/hfi1: Add irq affinity notification handler
        IB/hfi1: Add a new VL sysfs attribute for sdma engines
        IB/hfi1: Add sysfs interface for affinity setup
        IB/hfi1: Fix resource release in context allocation
        IB/hfi1: Remove unused variable from devdata
        IB/hfi1: Cleanup tasklet refs in comments
        IB/hfi1: Adjust hardware buffering parameter
        IB/hfi1: Act on external device timeout
        IB/hfi1: Fix defered ack race with qp destroy
        IB/hfi1: Combine shift copy and byte copy for SGE reads
        IB/hfi1: Do not read more than a SGE length
        IB/hfi1: Extend i2c timeout
        ...
      ce866e2d
    • Linus Torvalds's avatar
      Merge tag 'edac_for_4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · 19fe4165
      Linus Torvalds authored
      Pull EDAC updates from Borislav Petkov:
       "A lot of movement in the EDAC tree this time around, coarse summary
        below:
      
         - Altera Arria10 enablement of NAND, DMA, USB, QSPI and SD-MMC FIFO
           buffers (Thor Thayer)
      
         - split the memory controller part out of mpc85xx and share it with a
           new Freescale ARM Layerscape driver (York Sun)
      
         - amd64_edac fixes (Yazen Ghannam)
      
         - misc cleanups, refactoring and fixes all over the place"
      
      * tag 'edac_for_4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (37 commits)
        EDAC, altera: Add IRQ Flags to disable IRQ while handling
        EDAC, altera: Correct EDAC IRQ error message
        EDAC, amd64: Autoload module using x86_cpu_id
        EDAC, sb_edac: Remove NULL pointer check on array pci_tad
        EDAC: Remove NO_IRQ from powerpc-only drivers
        EDAC, fsl_ddr: Fix error return code in fsl_mc_err_probe()
        EDAC, fsl_ddr: Add entry to MAINTAINERS
        EDAC: Move Doug Thompson to CREDITS
        EDAC, I3000: Orphan driver
        EDAC, fsl_ddr: Replace simple_strtoul() with kstrtoul()
        EDAC, layerscape: Add Layerscape EDAC support
        EDAC, fsl_ddr: Fix IRQ dispose warning when module is removed
        EDAC, fsl_ddr: Add support for little endian
        EDAC, fsl_ddr: Add missing DDR DRAM types
        EDAC, fsl_ddr: Rename macros and names
        EDAC, fsl-ddr: Separate FSL DDR driver from MPC85xx
        EDAC, mpc85xx: Replace printk() with pr_* format
        EDAC, mpc85xx: Drop setting/clearing RFXE bit in HID1
        EDAC, altera: Rename MC trigger to common name
        EDAC, altera: Rename device trigger to common name
        ...
      19fe4165
    • Linus Torvalds's avatar
      Merge tag 'spi-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi · 58e4411b
      Linus Torvalds authored
      Pull spi updates from Mark Brown:
       "The SPI subsystem has also had quite a quiet release, though with a
        fairly large set of per-driver changes and several new drivers. The
        bulk of the changes are:
      
         - lots and lots of cleanups and improvements for the fsl-espi driver
      
         - new drivers for Broadcom MSPI/iProc/STB, Cavium ThunderX and
           J-Core"
      
      * tag 'spi-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (80 commits)
        spi: sc18is602: Change gpiod_set_value to gpiod_set_value_cansleep
        spi: pxa2xx: Fix build error because of missing header
        spi: imx: fix error return code in spi_imx_probe()
        spi: pxa2xx: Add support for GPIO descriptor chip selects
        spi: imx: Gracefully handle NULL master->cs_gpios
        spi: iproc-qspi: Add Broadcom iProc SoCs support
        spi: fsl-espi: improve return value handling in fsl_espi_probe
        spi: fsl-espi: simplify of_fsl_espi_probe
        spi: fsl-espi: remove unused variable in fsl_espi_setup
        spi: bcm-qspi: Fix error return code in bcm_qspi_probe()
        spi: bcm-qspi: Fix return value check in bcm_qspi_probe()
        spi: bcm-qspi: fix suspend/resume #ifdef
        spi: bcm-qspi: don't include linux/mtd/cfi.h
        spi: core: Use spi_sync_transfer() in spi_write()/spi_read()
        spi: fsl-espi: improve and extend register bit definitions
        spi: fsl-espi: align register access with other drivers
        spi: fsl-espi: improve and simplify interrupt handler
        spi: fsl-espi: simplify fsl_espi_setup_transfer
        spi: imx: support loopback mode on imx35
        spi: imx: set spi_bus_clk for mx1, mx31 and mx35
        ...
      58e4411b
    • Linus Torvalds's avatar
      Merge tag 'regulator-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator · 5a9f228a
      Linus Torvalds authored
      Pull regulator updates from Mark Brown:
       "This is an extremely quiet release for the regulator API, we've got a
        small set of bug fixes and minor feature enhancements for drivers plus
        a couple of more visible changes:
      
         - add support for ramp times in regulators that don't use selectors.
      
         - new driver for LTC3676"
      
      * tag 'regulator-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
        regulator: dbx500: remove unused functions in dbx500-prcmu.c
        regulator: pv88080: Update regulator for PV88080 BB silicon support
        regulator: core: don't return error with inadequate reason
        regulator: tps65910: Work around silicon erratum SWCZ010
        regulator: core: Add set_voltage_time op
        regulator: core: Don't skip set_voltage_time when ramp delay disabled
        regulator: core: Simplify error flow in _regulator_do_set_voltage()
        regulator: core: Use local ops variable in _regulator_do_set_voltage()
        regulator: hi6421: mark hi6421_regulator_ldo_get_optimum_mode() static
        regulator: Kconfig: Fix typo
        regulator: bindings: Use the correct symbol for second
        regulator: Remove support for optional supplies in the bulk API
        regulator: Add LTC3676 support
        regulator: rk808: Delete owner assignment
        regulator: tps65218: do not disable DCDC3 during poweroff on broken PMICs
        mfd: tps65218: add version check to the PMIC probe
      5a9f228a
    • Linus Torvalds's avatar
      Merge tag 'regmap-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap · 808c2b05
      Linus Torvalds authored
      Pull regmap updates from Mark Brown:
       "Another quiet release, a few small extensions to the set of register
        maps we support and an improvement in the debugfs code:
      
         - allow viewing of cached contents for write only registers via
           debugfs.
      
         - support a wider range of read/write flag masks in register formats.
      
         - support more little endian formats"
      
      * tag 'regmap-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
        regmap: Add missing little endian functions
        regmap: Allow longer flag masks for read and write
        regmap: debugfs: Add support for dumping write only device registers
        regmap: Add a function to check if a regmap register is cached
      808c2b05
    • Linus Torvalds's avatar
      Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · 5617c122
      Linus Torvalds authored
      Pull clk framework updates from Stephen Boyd:
       "The core clk framework changes are small again. They're mostly minor
        fixes that weren't causing enough problems (or any problems when we're
        just clarifying things) to warrant sending outside the merge window.
        The majority of changes are in drivers for various SoCs. Full details
        are in the logs, but here's the summary.
      
        Core:
      
         - Better support for DeviceTree overlays with the addition of the
           CLK_OF_DECLARE_DRIVER macro. Now we won't probe a clk driver for a
           device node that matched during of_clk_init(), unless the driver
           uses CLK_OF_DECLARE_DRIVER instead of CLK_OF_DECLARE. This allows
           overlays to work cleanly for drivers that must probe before the
           device model is ready, and also after it's ready when an overlay is
           loaded.
      
         - Clarification in the code around how clk_hw pointers are returned
           from of clk providers
      
         - Proper migration of prepare/enable counts to parents when the clk
           tree is constructed
      
        New Drivers:
      
         - Socionext's UniPhier SoCs
         - Loongson1C
         - ZTE ZX296718
         - Qualcomm MDM9615
         - Amlogic GXBB AO clocks and resets
         - Broadcom BCM53573 ILP
         - Maxim MAX77620
      
       Updates:
      
         - Four Allwinner SoCs are migrated to the new style clk driver (A31,
           A31s, A23 and A33)
         - Exynos 5xxx audio and DRAM clks
         - Loongson1B AC97, DMA and NAND clks
         - Rockchip DDR clks and rk3399 driver tweaks
         - Renesas R-Car M3-W (r8a7796) SoC SDHI interface and Watchdog timer
           clks
         - Renasas R-Car H3 and M3-W CMT clks and RAVB+Thermal clks for M3-W
         - Amlogic GXBB MMC gate clks
         - at91 sama5d4 sckc
         - Removal of STiH415 and STiH416 clk support as the SoC is being
           removed
         - Rework of STiH4xx clk support for new style bindings
         - Continuation of driver migration to clk_hw based registration APIs
         - xgene PMD support
         - bcm2835 critical clk markings
         - ARM versatile ICST"
      
      * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (199 commits)
        CLK: Add Loongson1C clock support
        clk: Loongson1: Make use of GENMASK
        clk: Loongson1: Update clocks of Loongson1B
        clk: Loongson1: Refactor Loongson1 clock
        clk: change the type of clk_hw_onecell_data.num to unsigned int
        clk: zx296718: register driver earlier with core_initcall
        clk: mvebu: dynamically allocate resources in Armada CP110 system controller
        clk: mvebu: fix setting unwanted flags in CP110 gate clock
        clk: nxp: clk-lpc32xx: Unmap region obtained by of_iomap
        clk: mediatek: clk-mt8173: Unmap region obtained by of_iomap
        clk: sunxi-ng: Fix reset offset for the A23 and A33
        clk: at91: sckc: optimize boot time
        clk: at91: Add sama5d4 sckc support
        clk: at91: move slow clock controller clocks to sckc.c
        clk: imx6: initialize GPU clocks
        clk: imx6: fix i.MX6DL clock tree to reflect reality
        clk: imx53: Add clocks configuration
        clk: uniphier: add clock data for UniPhier SoCs
        clk: uniphier: add core support code for UniPhier clock driver
        clk: bcm: Add driver for BCM53573 ILP clock
        ...
      5617c122
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.9' of... · 77b0a4aa
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon updates from Guenter Roeck:
      
       - New hwmon registration API, including ports of several drivers to the
         new API
      
       - New hwmon driver for APM X-Gene SoC
      
       - Added support for UCD90160, DPS-460, DPS-800, and SGD009 PMBUs chips
      
       - Various cleanups, minor improvements, and fixes in several drivers
      
      * tag 'hwmon-for-linus-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (54 commits)
        hwmon: (nct6775) Add support for multiple virtual temperature sources
        hwmon: (adt7470) No need for additional synchronization on kthread_stop()
        hwmon: (lm95241) Update module description to include LM95231
        hwmon: (lm95245) Select REGMAP_I2C
        hwmon: (ibmpowernv) Fix label for cores numbers not threads
        hwmon: (adt7470) Allow faster removal
        hwmon: (adt7470) Add write support to alarm_mask
        hwmon: (xgene) access mailbox as RAM
        hwmon: (lm95245) Use new hwmon registration API
        hwmon: (lm95241) Convert to use new hwmon registration API
        hwmon: (jc42) Convert to use new hwmon registration API
        hwmon: (max31790) Convert to use new hwmon registration API
        hwmon: (nct7904) Convert to use new hwmon registration API
        hwmon: (ltc4245) Convert to use new hwmon registration API
        hwmon: (tmp421) Convert to use new hwmon registration API
        hwmon: (tmp102) Convert to use new hwmon registration API
        hwmon: (lm90) Convert to use new hwmon registration API
        hwmon: (lm75) Convert to use new hwmon registration API
        hwmon: (xgene) Fix crash when alarm occurs before driver probe
        hwmon: (iio_hwmon) defer probe when no channel is found
        ...
      77b0a4aa
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds · f80fa182
      Linus Torvalds authored
      Pull LED driver updates from Jacek Anaszewski:
       "Three new LED class drivers and some minor fixes and improvementes to
        the leds-gpio driver, LED Trigger core and documentation"
      
      * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
        leds: triggers: Check return value of kobject_uevent_env()
        leds: triggers: Return from led_trigger_set() if there is nothing to do
        leds: gpio: fix and simplify error handling in gpio_leds_create
        leds: gpio: switch to managed version of led_classdev_register
        leds: gpio: fix and simplify reading property "label"
        leds: gpio: simplify gpio_leds_create
        leds: gpio: add helper cdev_to_gpio_led_data
        leds: gpio: fix an unhandled error case in create_gpio_led
        leds: gpio: introduce gpio_blink_set_t
        leds: add driver for Mellanox systems LEDs
        Documentation: move oneshot trigger attributes documentation to ABI
        leds: centralize definition of "default-state" property
        leds: add PM8058 LEDs driver
        leds: pm8058: add device tree bindings
        leds: do not overflow sysfs buffer in led_trigger_show
        leds: make triggers explicitly non-modular
        DT: leds: Add bindings for ISSI is31fl319x
        leds: is31fl319x: 1/3/6/9-channel light effect led driver
      f80fa182
    • Johannes Berg's avatar
      Merge remote-tracking branch 'net-next/master' into mac80211-next · 1e1430d5
      Johannes Berg authored
      Resolve the merge conflict between Felix's/my and Toke's patches
      coming into the tree through net and mac80211-next respectively.
      Most of Felix's changes go away due to Toke's new infrastructure
      work, my patch changes to "goto begin" (the label wasn't there
      before) instead of returning NULL so flow control towards drivers
      is preserved better.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      1e1430d5
    • David S. Miller's avatar
      Merge branch 'ncsi-next' · 9a8dd213
      David S. Miller authored
      Gavin Shan says:
      
      ====================
      net/ncsi: NCSI Improvment and bug fixes
      
      This series of patches improves NCSI stack according to the comments
      I received after the NCSI code was merged to 4.8.rc1:
      
        * PATCH[1/8] fixes the build warning caused by xchg() with ia64-linux-gcc.
          The atomic operations are removed. The NCSI's lock should be taken when
          reading or updating its state and chained state.
        * Channel ID (0x1f) is the reserved one and it cannot be valid channel ID.
          So we needn't try to probe channel whose ID is 0x1f. PATCH[2/8] and
          PATCH[3/8] are addressing this issue.
        * The request IDs are assigned in round-robin fashion, but it's broken.
          PATCH[4/8] make it work.
        * PATCH[5/8] and PATCH[6/8] reworks the channel monitoring to improve the
          code readability and its robustness.
        * PATCH[7/8] and PATCH[8/8] introduces ncsi_stop_dev() so that the network
          device can be closed and opened afterwards. No error will be seen.
      
      Changelog
      =========
      v2:
        * The NCSI's lock is taken when reading or updating its state as the
          {READ,WRITE}_ONCE() isn't reliable.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9a8dd213
    • Gavin Shan's avatar
      net/faraday: Stop NCSI device on shutdown · 2c15f25b
      Gavin Shan authored
      This stops NCSI device when closing the network device so that the
      NCSI device can be reenabled later.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2c15f25b
    • Gavin Shan's avatar
      net/ncsi: Introduce ncsi_stop_dev() · c0cd1ba4
      Gavin Shan authored
      This introduces ncsi_stop_dev(), as counterpart to ncsi_start_dev(),
      to stop the NCSI device so that it can be reenabled in future. This
      API should be called when the network device driver is going to
      shutdown the device. There are 3 things done in the function: Stop
      the channel monitoring; Reset channels to inactive state; Report
      NCSI link down.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c0cd1ba4
    • Gavin Shan's avatar
      net/ncsi: Rework the channel monitoring · 83afdc6a
      Gavin Shan authored
      The original NCSI channel monitoring was implemented based on a
      backoff algorithm: the GLS response should be received in the
      specified interval. Otherwise, the channel is regarded as dead
      and failover should be taken if current channel is an active one.
      There are several problems in the implementation: (A) On BCM5718,
      we found when the IID (Instance ID) in the GLS command packet
      changes from 255 to 1, the response corresponding to IID#1 never
      comes in. It means we cannot make the unfair judgement that the
      channel is dead when one response is missed. (B) The code's
      readability should be improved. (C) We should do failover when
      current channel is active one and the channel monitoring should
      be marked as disabled before doing failover.
      
      This reworks the channel monitoring to address all above issues.
      The fields for channel monitoring is put into separate struct
      and the state of channel monitoring is predefined. The channel
      is regarded alive if the network controller responses to one of
      two GLS commands or both of them in 5 seconds.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      83afdc6a
    • Gavin Shan's avatar
      net/ncsi: Allow to extend NCSI request properties · a0509cbe
      Gavin Shan authored
      There is only one NCSI request property for now: the response for
      the sent command need drive the workqueue or not. So we had one
      field (@driven) for the purpose. We lost the flexibility to extend
      NCSI request properties.
      
      This replaces @driven with @flags and @req_flags in NCSI request
      and NCSI command argument struct. Each bit of the newly introduced
      field can be used for one property. No functional changes introduced.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a0509cbe
    • Gavin Shan's avatar
      net/ncsi: Rework request index allocation · a15af54f
      Gavin Shan authored
      The NCSI request index (struct ncsi_request::id) is put into instance
      ID (IID) field while sending NCSI command packet. It was designed the
      available IDs are given in round-robin fashion. @ndp->request_id was
      introduced to represent the next available ID, but it has been used
      as number of successively allocated IDs. It breaks the round-robin
      design. Besides, we shouldn't put 0 to NCSI command packet's IID
      field, meaning ID#0 should be reserved according section 6.3.1.1
      in NCSI spec (v1.1.0).
      
      This fixes above two issues. With it applied, the available IDs will
      be assigned in round-robin fashion and ID#0 won't be assigned.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a15af54f
    • Gavin Shan's avatar
      net/ncsi: Don't probe on the reserved channel ID (0x1f) · 55e02d08
      Gavin Shan authored
      We needn't send CIS (Clear Initial State) command to the NCSI
      reserved channel (0x1f) in the enumeration. We shouldn't receive
      a valid response from CIS on NCSI channel 0x1f.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      55e02d08
    • Gavin Shan's avatar
      net/ncsi: Introduce NCSI_RESERVED_CHANNEL · bc7e0f50
      Gavin Shan authored
      This defines NCSI_RESERVED_CHANNEL as the reserved NCSI channel
      ID (0x1f). No logical changes introduced.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bc7e0f50
    • Gavin Shan's avatar
      net/ncsi: Avoid unused-value build warning from ia64-linux-gcc · d8cedaab
      Gavin Shan authored
      xchg() is used to set NCSI channel's state in order for consistent
      access to the state. xchg()'s return value should be used. Otherwise,
      one build warning will be raised (with -Wunused-value) as below message
      indicates. It is reported by ia64-linux-gcc (GCC) 4.9.0.
      
       net/ncsi/ncsi-manage.c: In function 'ncsi_channel_monitor':
       arch/ia64/include/uapi/asm/cmpxchg.h:56:2: warning: value computed is \
       not used [-Wunused-value]
        ((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr))))
         ^
       net/ncsi/ncsi-manage.c:202:3: note: in expansion of macro 'xchg'
        xchg(&nc->state, NCSI_CHANNEL_INACTIVE);
      
      This removes the atomic access to NCSI channel's state avoid the above
      build warning. We have to hold the channel's lock when its state is readed
      or updated. No functional changes introduced.
      Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
      Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d8cedaab
    • Andrew Collins's avatar
      net: Add netdev all_adj_list refcnt propagation to fix panic · 93409033
      Andrew Collins authored
      This is a respin of a patch to fix a relatively easily reproducible kernel
      panic related to the all_adj_list handling for netdevs in recent kernels.
      
      The following sequence of commands will reproduce the issue:
      
      ip link add link eth0 name eth0.100 type vlan id 100
      ip link add link eth0 name eth0.200 type vlan id 200
      ip link add name testbr type bridge
      ip link set eth0.100 master testbr
      ip link set eth0.200 master testbr
      ip link add link testbr mac0 type macvlan
      ip link delete dev testbr
      
      This creates an upper/lower tree of (excuse the poor ASCII art):
      
                  /---eth0.100-eth0
      mac0-testbr-
                  \---eth0.200-eth0
      
      When testbr is deleted, the all_adj_lists are walked, and eth0 is deleted twice from
      the mac0 list. Unfortunately, during setup in __netdev_upper_dev_link, only one
      reference to eth0 is added, so this results in a panic.
      
      This change adds reference count propagation so things are handled properly.
      
      Matthias Schiffer reported a similar crash in batman-adv:
      
      https://github.com/freifunk-gluon/gluon/issues/680
      https://www.open-mesh.org/issues/247
      
      which this patch also seems to resolve.
      Signed-off-by: default avatarAndrew Collins <acollins@cradlepoint.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      93409033
    • Raju Lakkaraju's avatar
      net: phy: Add Edge-rate driver for Microsemi PHYs. · a4cc96d1
      Raju Lakkaraju authored
      Edge-rate:
      As system and networking speeds increase, a signal's output transition,
      also know as the edge rate or slew rate (V/ns), takes on greater importance
      because high-speed signals come with a price. That price is an assortment of
      interference problems like ringing on the line, signal overshoot and
      undershoot, extended signal settling times, crosstalk noise, transmission
      line reflections, false signal detection by the receiving device and
      electromagnetic interference (EMI) -- all of which can negate the potential
      gains designers are seeking when they try to increase system speeds through
      the use of higher performance logic devices. The fact is, faster signaling
      edge rates can cause a higher level of electrical noise or other type of
      interference that can actually lead to slower line speeds and lower maximum
      system frequencies. This parameter allow the board designers to change the
      driving strange, and thereby change the EMI behavioral.
      
      Edge-rate parameters (vddmac, edge-slowdown) get from Device Tree.
      
      Tested on Beaglebone Black with VSC 8531 PHY.
      Signed-off-by: default avatarRaju Lakkaraju <Raju.Lakkaraju@microsemi.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a4cc96d1
    • Benjamin Poirier's avatar
      vmxnet3: Wake queue from reset work · 277964e1
      Benjamin Poirier authored
      vmxnet3_reset_work() expects tx queues to be stopped (via
      vmxnet3_quiesce_dev -> netif_tx_disable). However, this races with the
      netif_wake_queue() call in netif_tx_timeout() such that the driver's
      start_xmit routine may be called unexpectedly, triggering one of the BUG_ON
      in vmxnet3_map_pkt with a stack trace like this:
      
      RIP: 0010:[<ffffffffa00cf4bc>] vmxnet3_map_pkt+0x3ac/0x4c0 [vmxnet3]
       [<ffffffffa00cf7e0>] vmxnet3_tq_xmit+0x210/0x4e0 [vmxnet3]
       [<ffffffff813ab144>] dev_hard_start_xmit+0x2e4/0x4c0
       [<ffffffff813c956e>] sch_direct_xmit+0x17e/0x1e0
       [<ffffffff813c96a7>] __qdisc_run+0xd7/0x130
       [<ffffffff813a6a7a>] net_tx_action+0x10a/0x200
       [<ffffffff810691df>] __do_softirq+0x11f/0x260
       [<ffffffff81472fdc>] call_softirq+0x1c/0x30
       [<ffffffff81004695>] do_softirq+0x65/0xa0
       [<ffffffff81069b89>] local_bh_enable_ip+0x99/0xa0
       [<ffffffffa031ff36>] destroy_conntrack+0x96/0x110 [nf_conntrack]
       [<ffffffff813d65e2>] nf_conntrack_destroy+0x12/0x20
       [<ffffffff8139c6d5>] skb_release_head_state+0xb5/0xf0
       [<ffffffff8139d299>] skb_release_all+0x9/0x20
       [<ffffffff8139cfe9>] __kfree_skb+0x9/0x90
       [<ffffffffa00d0069>] vmxnet3_quiesce_dev+0x209/0x340 [vmxnet3]
       [<ffffffffa00d020a>] vmxnet3_reset_work+0x6a/0xa0 [vmxnet3]
       [<ffffffff8107d7cc>] process_one_work+0x16c/0x350
       [<ffffffff810804fa>] worker_thread+0x17a/0x410
       [<ffffffff810848c6>] kthread+0x96/0xa0
       [<ffffffff81472ee4>] kernel_thread_helper+0x4/0x10
      Signed-off-by: default avatarBenjamin Poirier <bpoirier@suse.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      277964e1
    • Linus Torvalds's avatar
      Using BUG_ON() as an assert() is _never_ acceptable · 21f54dda
      Linus Torvalds authored
      That just generally kills the machine, and makes debugging only much
      harder, since the traces may long be gone.
      
      Debugging by assert() is a disease.  Don't do it.  If you can continue,
      you're much better off doing so with a live machine where you have a
      much higher chance that the report actually makes it to the system logs,
      rather than result in a machine that is just completely dead.
      
      The only valid situation for BUG_ON() is when continuing is not an
      option, because there is massive corruption.  But if you are just
      verifying that something is true, you warn about your broken assumptions
      (preferably just once), and limp on.
      
      Fixes: 22f2ac51 ("mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()")
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Miklos Szeredi <miklos@szeredi.hu>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      21f54dda
    • David S. Miller's avatar
      Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue · 0438e3c8
      David S. Miller authored
      Jeff Kirsher says:
      
      ====================
      100GbE Intel Wired LAN Driver Updates 2016-10-02
      
      This series contains updates to fm10k only.
      
      Jake fixes an issue where PTP applications requesting software timestamps
      may complain that the requested mode is not supported, so add a generic
      callback for those drivers that have software transmit timestamp support
      enabled.  Then provides a trivial cleanup where a code was not wrapped
      properly.  Got make sure that code looks good in a 80 character limit.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0438e3c8
    • Guilherme G Piccoli's avatar
      i40e: avoid NULL pointer dereference and recursive errors on early PCI error · edfc23ee
      Guilherme G Piccoli authored
      Although rare, it's possible to hit PCI error early on device
      probe, meaning possibly some structs are not entirely initialized,
      and some might even be completely uninitialized, leading to NULL
      pointer dereference.
      
      The i40e driver currently presents a "bad" behavior if device hits
      such early PCI error: firstly, the struct i40e_pf might not be
      attached to pci_dev yet, leading to a NULL pointer dereference on
      access to pf->state.
      
      Even checking if the struct is NULL and avoiding the access in that
      case isn't enough, since the driver cannot recover from PCI error
      that early; in our experiments we saw multiple failures on kernel
      log, like:
      
        [549.664] i40e 0007:01:00.1: Initial pf_reset failed: -15
        [549.664] i40e: probe of 0007:01:00.1 failed with error -15
        [...]
        [871.644] i40e 0007:01:00.1: The driver for the device stopped because the
        device firmware failed to init. Try updating your NVM image.
        [871.644] i40e: probe of 0007:01:00.1 failed with error -32
        [...]
        [872.516] i40e 0007:01:00.0: ARQ: Unknown event 0x0000 ignored
      
      Between the first probe failure (error -15) and the second (error -32)
      another PCI error happened due to the first bad probe. Also, driver
      started to flood console with those ARQ event messages.
      
      This patch will prevent these issues by allowing error recovery
      mechanism to remove the failed device from the system instead of
      trying to recover from early PCI errors during device probe.
      
      CC: <stable@vger.kernel.org>
      Signed-off-by: default avatarGuilherme G Piccoli <gpiccoli@linux.vnet.ibm.com>
      Acked-by: default avatarJacob Keller <jacob.e.keller@intel.com>
      Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      edfc23ee