1. 31 Jul, 2014 18 commits
  2. 30 Jul, 2014 17 commits
    • Vince Bridgers's avatar
      net: stmmac: add platform init/exit for Altera's ARM socfpga · 2d871aa0
      Vince Bridgers authored
      This patch adds platform init/exit functions and modifications to support
      suspend/resume for the Altera Cyclone 5 SOC Ethernet controller. The platform
      exit function puts the controller into reset using the socfpga reset
      controller driver. The platform init function sets up the Synopsys mac by
      first making sure the Ethernet controller is held in reset, programming the
      phy mode through external support logic, then deasserts reset through
      the socfpga reset manager driver.
      Signed-off-by: default avatarVince Bridgers <vbridgers2013@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2d871aa0
    • David S. Miller's avatar
      Merge branch 'mlx5-next' · 7aa06bf5
      David S. Miller authored
      Eli Cohen says:
      
      ====================
      mlx5 driver changes related to PCI handling ***
      
      The first of these patches is changing the pci device driver from mlx5_ib to
      mlx5_core in a similar manner it is done in mlx4. This set the grounds for us
      to introduce Ethernet driver for HW which uses mlx5.
      
      The other two patches contain minor fixes.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7aa06bf5
    • Jack Morgenstein's avatar
      mlx5: Adjust events to use unsigned long param instead of void * · 4d2f9bbb
      Jack Morgenstein authored
      In the event flow, we currently pass only a port number in the
      void *data argument.  Rather than pass a pointer to the event handlers,
      we should use an "unsigned long" parameter, and pass the port number
      value directly.
      
      In the future, if necessary for some events, we can use the unsigned long
      parameter to pass a pointer.
      
      Based on a patch by Eli Cohen <eli@mellanox.com>
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4d2f9bbb
    • Jack Morgenstein's avatar
      mlx5: minor fixes (mainly avoidance of hidden casts) · f241e749
      Jack Morgenstein authored
      There were many places where parameters which should be u8/u16 were
      integer type.
      
      Additionally, in 2 places, a check for a non-null pointer was added
      before dereferencing the pointer (this is actually a bug fix).
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f241e749
    • Jack Morgenstein's avatar
      mlx5: Move pci device handling from mlx5_ib to mlx5_core · 9603b61d
      Jack Morgenstein authored
      In preparation for a new mlx5 device which is VPI (i.e., ports can be
      either IB or ETH), move the pci device functionality from mlx5_ib
      to mlx5_core.
      
      This involves the following changes:
      1. Move mlx5_core_dev struct out of mlx5_ib_dev. mlx5_core_dev
         is now an independent structure maintained by mlx5_core.
         mlx5_ib_dev now has a pointer to that struct.
         This requires changing a lot of places where the core_dev
         struct was accessed via mlx5_ib_dev (now, this needs to
         be a pointer dereference).
      2. All PCI initializations are now done in mlx5_core. Thus,
         it is now mlx5_core which does pci_register_device (and not
         mlx5_ib, as was previously).
      3. mlx5_ib now registers itself with mlx5_core as an "interface"
         driver. This is very similar to the mechanism employed for
         the mlx4 (ConnectX) driver. Once the HCA is initialized
         (by mlx5_core), it invokes the interface drivers to do
         their initializations.
      4. There is a new event handler which the core registers:
         mlx5_core_event(). This event handler invokes the
         event handlers registered by the interfaces.
      
      Based on a patch by Eli Cohen <eli@mellanox.com>
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9603b61d
    • Hannes Frederic Sowa's avatar
      random32: mix in entropy from core to late initcall · 4ada97ab
      Hannes Frederic Sowa authored
      Currently, we have a 3-stage seeding process in prandom():
      
      Phase 1 is from the early actual initialization of prandom()
      subsystem which happens during core_initcall() and remains
      most likely until the beginning of late_initcall() phase.
      Here, the system might not have enough entropy available
      for seeding with strong randomness from the random driver.
      That means, we currently have a 32bit weak LCG() seeding
      the PRNG status register 1 and mixing that successively
      into the other 3 registers just to get it up and running.
      
      Phase 2 starts with late_initcall() phase resp. when the
      random driver has initialized its non-blocking pool with
      enough entropy. At that time, we throw away *all* inner
      state from its 4 registers and do a full reseed with strong
      randomness.
      
      Phase 3 starts right after that and does a periodic reseed
      with random slack of status register 1 by a strong random
      source again.
      
      A problem in phase 1 is that during bootup data structures
      can be initialized, e.g. on module load time, and thus access
      a weakly seeded prandom and are never changed for the rest
      of their live-time, thus carrying along the results from a
      week seed. Lets make sure that current but also future users
      access a possibly better early seeded prandom.
      
      This patch therefore improves phase 1 by trying to make it
      more 'unpredictable' through mixing in seed from a possible
      hardware source. Now, the mix-in xors inner state with the
      outcome of either of the two functions arch_get_random_{,seed}_int(),
      preferably arch_get_random_seed_int() as it likely represents
      a non-deterministic random bit generator in hw rather than
      a cryptographically secure PRNG in hw. However, not all might
      have the first one, so we use the PRNG as a fallback if
      available. As we xor the seed into the current state, the
      worst case would be that a hardware source could be unverifiable
      compromised or backdoored. In that case nevertheless it
      would be as good as our original early seeding function
      prandom_seed_very_weak() since we mix through xor which is
      entropy preserving.
      
      Joint work with Daniel Borkmann.
      Signed-off-by: default avatarDaniel Borkmann <dborkman@redhat.com>
      Signed-off-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4ada97ab
    • David S. Miller's avatar
    • Linus Torvalds's avatar
      Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux · 26bcd8b7
      Linus Torvalds authored
      Pull Exynos platform DT fix from Grant Likely:
       "Device tree Exynos bug fix for v3.16-rc7
      
        This bug fix has been brewing for a while.  I hate sending it to you
        so late, but I only got confirmation that it solves the problem this
        past weekend.  The diff looks big for a bug fix, but the majority of
        it is only executed in the Exynos quirk case.  Unfortunately it
        required splitting early_init_dt_scan() in two and adding quirk
        handling in the middle of it on ARM.
      
        Exynos has buggy firmware that puts bad data into the memory node.
        Commit 1c2f87c2 ("ARM: Get rid of meminfo") exposed the bug by
        dropping the artificial upper bound on the number of memory banks that
        can be added.  Exynos fails to boot after that commit.  This branch
        fixes it by splitting the early DT parse function and inserting a
        fixup hook.  Exynos uses the hook to correct the DT before parsing
        memory regions"
      
      * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
        arm: Add devicetree fixup machine function
        of: Add memory limiting function for flattened devicetrees
        of: Split early_init_dt_scan into two parts
      26bcd8b7
    • Linus Torvalds's avatar
      Merge tag 'stable/for-linus-3.16-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · acba648d
      Linus Torvalds authored
      Pull Xen fix from David Vrabel:
       "Fix BUG when trying to expand the grant table.  This seems to occur
        often during boot with Ubuntu 14.04 PV guests"
      
      * tag 'stable/for-linus-3.16-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        x86/xen: safely map and unmap grant frames when in atomic context
      acba648d
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · d8772157
      Linus Torvalds authored
      Pull KVM fix from Paolo Bonzini:
       "Fix a bug which allows KVM guests to bring down the entire system on
        some 64K enabled ARM64 hosts"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        kvm: arm64: vgic: fix hyp panic with 64k pages on juno platform
      d8772157
    • Linus Torvalds's avatar
      Revert "cdc_subset: deal with a device that needs reset for timeout" · 1d8fcba1
      Linus Torvalds authored
      This reverts commit 20fbe3ae.
      
      As reported by Stephen Rothwell, it causes compile failures in certain
      configurations:
      
        drivers/net/usb/cdc_subset.c:360:15: error: 'dummy_prereset' undeclared here (not in a function)
          .pre_reset = dummy_prereset,
                       ^
        drivers/net/usb/cdc_subset.c:361:16: error: 'dummy_postreset' undeclared here (not in a function)
          .post_reset = dummy_postreset,
                        ^
      Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
      Acked-by: default avatarDavid Miller <davem@davemloft.net>
      Cc: Oliver Neukum <oneukum@suse.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1d8fcba1
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · b527caee
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Make fragmentation IDs less predictable, from Eric Dumazet.
      
       2) TSO tunneling can crash in bnx2x driver, fix from Dmitry Kravkov.
      
       3) Don't allow NULL msg->msg_name just because msg->msg_namelen is
          non-zero, from Andrey Ryabinin.
      
       4) ndm->ndm_type set using wrong macros, from Jun Zhao.
      
       5) cdc-ether devices can come up with entries in their address filter,
          so explicitly clear the filter after the device initializes.  From
          Oliver Neukum.
      
       6) Forgotten refcount bump in xfrm_lookup(), from Steffen Klassert.
      
       7) Short packets not padded properly, exposing random data, in bcmgenet
          driver.  Fix from Florian Fainelli.
      
       8) xgbe_probe() doesn't return an error code, but rather zero, when
          netif_set_real_num_tx_queues() fails.  Fix from Wei Yongjun.
      
       9) USB speed not probed properly in r8152 driver, from Hayes Wang.
      
      10) Transmit logic choosing the outgoing port in the sunvnet driver
          needs to consider a) is the port actually up and b) whether it is a
          switch port.  Fix from David L Stevens.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (27 commits)
        net: phy: re-apply PHY fixups during phy_register_device
        cdc-ether: clean packet filter upon probe
        cdc_subset: deal with a device that needs reset for timeout
        net: sendmsg: fix NULL pointer dereference
        isdn/bas_gigaset: fix a leak on failure path in gigaset_probe()
        ip: make IP identifiers less predictable
        neighbour : fix ndm_type type error issue
        sunvnet: only use connected ports when sending
        can: c_can_platform: Fix raminit, use devm_ioremap() instead of devm_ioremap_resource()
        bnx2x: fix crash during TSO tunneling
        r8152: fix the checking of the usb speed
        net: phy: Ensure the MDIO bus module is held
        net: phy: Set the driver when registering an MDIO bus device
        bnx2x: fix set_setting for some PHYs
        hyperv: Fix error return code in netvsc_init_buf()
        amd-xgbe: Fix error return code in xgbe_probe()
        ath9k: fix aggregation session lockup
        net: bcmgenet: correctly pad short packets
        net: sctp: inherit auth_capable on INIT collisions
        mac80211: fix crash on getting sta info with uninitialized rate control
        ...
      b527caee
    • David Vrabel's avatar
      x86/xen: safely map and unmap grant frames when in atomic context · b7dd0e35
      David Vrabel authored
      arch_gnttab_map_frames() and arch_gnttab_unmap_frames() are called in
      atomic context but were calling alloc_vm_area() which might sleep.
      
      Also, if a driver attempts to allocate a grant ref from an interrupt
      and the table needs expanding, then the CPU may already by in lazy MMU
      mode and apply_to_page_range() will BUG when it tries to re-enable
      lazy MMU mode.
      
      These two functions are only used in PV guests.
      
      Introduce arch_gnttab_init() to allocates the virtual address space in
      advance.
      
      Avoid the use of apply_to_page_range() by using saving and using the
      array of PTE addresses from the alloc_vm_area() call (which ensures
      that the required page tables are pre-allocated).
      Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      b7dd0e35
    • Will Deacon's avatar
      kvm: arm64: vgic: fix hyp panic with 64k pages on juno platform · 63afbe7a
      Will Deacon authored
      If the physical address of GICV isn't page-aligned, then we end up
      creating a stage-2 mapping of the page containing it, which causes us to
      map neighbouring memory locations directly into the guest.
      
      As an example, consider a platform with GICV at physical 0x2c02f000
      running a 64k-page host kernel. If qemu maps this into the guest at
      0x80010000, then guest physical addresses 0x80010000 - 0x8001efff will
      map host physical region 0x2c020000 - 0x2c02efff. Accesses to these
      physical regions may cause UNPREDICTABLE behaviour, for example, on the
      Juno platform this will cause an SError exception to EL3, which brings
      down the entire physical CPU resulting in RCU stalls / HYP panics / host
      crashing / wasted weeks of debugging.
      
      SBSA recommends that systems alias the 4k GICV across the bounding 64k
      region, in which case GICV physical could be described as 0x2c020000 in
      the above scenario.
      
      This patch fixes the problem by failing the vgic probe if the physical
      base address or the size of GICV aren't page-aligned. Note that this
      generated a warning in dmesg about freeing enabled IRQs, so I had to
      move the IRQ enabling later in the probe.
      
      Cc: Christoffer Dall <christoffer.dall@linaro.org>
      Cc: Marc Zyngier <marc.zyngier@arm.com>
      Cc: Gleb Natapov <gleb@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Joel Schopp <joel.schopp@amd.com>
      Cc: Don Dutile <ddutile@redhat.com>
      Acked-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      Acked-by: default avatarJoel Schopp <joel.schopp@amd.com>
      Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      63afbe7a
    • Laura Abbott's avatar
      arm: Add devicetree fixup machine function · 5a12a597
      Laura Abbott authored
      Commit 1c2f87c2
      (ARM: 8025/1: Get rid of meminfo) dropped the upper bound on
      the number of memory banks that can be added as there was no
      technical need in the kernel. It turns out though, some bootloaders
      (specifically the arndale-octa exynos boards) may pass invalid memory
      information and rely on the kernel to not parse this data. This is a
      bug in the bootloader but we still need to work around this.
      Work around this by introducing a dt_fixup function. This function
      gets called before the flattened devicetree is scanned for memory
      and the like. In this fixup function for exynos, limit the maximum
      number of memory regions in the devicetree.
      Signed-off-by: default avatarLaura Abbott <lauraa@codeaurora.org>
      Tested-by: default avatarAndreas Färber <afaerber@suse.de>
      [glikely: Added a comment and fixed up function name]
      Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
      5a12a597
    • Laura Abbott's avatar
      of: Add memory limiting function for flattened devicetrees · 704033ce
      Laura Abbott authored
      Buggy bootloaders may pass bogus memory entries in the devicetree.
      Add of_fdt_limit_memory to add an upper bound on the number of
      entries that can be present in the devicetree.
      Signed-off-by: default avatarLaura Abbott <lauraa@codeaurora.org>
      Tested-by: default avatarAndreas Färber <afaerber@suse.de>
      Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
      704033ce
    • Laura Abbott's avatar
      of: Split early_init_dt_scan into two parts · 4972a74b
      Laura Abbott authored
      Currently, early_init_dt_scan validates the header, sets the
      boot params, and scans for chosen/memory all in one function.
      Split this up into two separate functions (validation/setting
      boot params in one, scanning in another) to allow for
      additional setup between boot params and scanning the memory.
      Signed-off-by: default avatarLaura Abbott <lauraa@codeaurora.org>
      Tested-by: default avatarAndreas Färber <afaerber@suse.de>
      [glikely: s/early_init_dt_scan_all/early_init_dt_scan_nodes/]
      Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
      4972a74b
  3. 29 Jul, 2014 5 commits