1. 23 Apr, 2012 13 commits
    • Will Deacon's avatar
      ARM: 7399/1: vfp: move user vfp state save/restore code out of signal.c · 2498814f
      Will Deacon authored
      
      
      The user VFP state must be preserved (subject to ucontext modifications)
      across invocation of a signal handler and this is currently handled by
      vfp_{preserve,restore}_context in signal.c
      
      Since this code requires intimate low-level knowledge of the VFP state,
      this patch moves it into vfpmodule.c.
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      2498814f
    • Will Deacon's avatar
      ARM: 7398/1: l2x0: only write to debug registers on PL310 · ab4d5368
      Will Deacon authored
      
      
      PL310 errata #588369 and #727915 require writes to the debug registers
      of the cache controller to work around known problems. Writing these
      registers on L220 may cause deadlock, so ensure that we only perform
      this operation when we identify a PL310 at probe time.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      ab4d5368
    • Will Deacon's avatar
      ARM: 7397/1: l2x0: only apply workaround for erratum #753970 on PL310 · f154fe9b
      Will Deacon authored
      
      
      The workaround for PL310 erratum #753970 can lead to deadlock on systems
      with an L220 cache controller.
      
      This patch makes the workaround effective only when the cache controller
      is identified as a PL310 at probe time.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      f154fe9b
    • Will Deacon's avatar
      ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores · f0c4b8d6
      Will Deacon authored
      Erratum #326103 ("FSR write bit incorrect on a SWP to read-only memory")
      only affects the ARM 1136 core prior to r1p0. The workaround
      disassembles the faulting instruction to determine whether it was a read
      or write access on all v6 cores.
      
      An issue has been reported on the ARM 11MPCore whereby loading the
      faulting instruction may happen in parallel with that page being
      unmapped, resulting in a deadlock due to the lack of TLB broadcasting
      in hardware:
      
      http://lists.infradead.org/pipermail/linux-arm-kernel/2012-March/091561.html
      
      
      
      This patch limits the workaround so that it is only used on affected
      cores, which are known to be UP only. Other v6 cores can rely on the
      FSR to indicate the access type correctly.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      f0c4b8d6
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm · e895bd79
      Linus Torvalds authored
      Pull ARM fixes from Russell King:
       "Here's my usual Sunday push, just for one revert which PeterZ hollered
        about after last weeks push.  Other than that, all seems strangely
        quiet as far as fixes go in non-platform ARM land at the moment."
      
      * 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
        Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"
      e895bd79
    • Linus Torvalds's avatar
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · 205b9c9c
      Linus Torvalds authored
      Pull powerpc fixes from Benjamin Herrenschmidt:
       "Here are a few fixes for powerpc.  Note the addition to the generic
        irq.h.  This is part of a 3-patches regression fix for mpic due to
        changes in how IRQ_TYPE_NONE is being handled.  Thomas agreed to the
        addition of the new IRQ_TYPE_DEFAULT contant, however he hasn't
        replied with an Ack to the actual patch yet.  I don't to wait much
        longer with these patches tho."
      
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
        powerpc/mpic: Properly set default triggers
        irq: Add IRQ_TYPE_DEFAULT for use by PIC drivers
        powerpc/mpic: Fix confusion between hw_irq and virq
        powerpc/pmac: Don't add_timer() twice
        powerpc/eeh: Fix crash caused by null eeh_dev
        powerpc/mpc85xx: add MPIC message dts node
        powerpc/mpic_msgr: fix offset error when setting mer register
        powerpc/mpic_msgr: add lock for MPIC message global variable
        powerpc/mpic_msgr: fix compile error when SMP disabled
        powerpc: fix build when CONFIG_BOOKE_WDT is enabled
        powerpc/85xx: don't call of_platform_bus_probe() twice
      205b9c9c
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 7e296295
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix namespace init and cleanup in phonet to fix some oopses, from
          Eric W. Biederman.
      
       2) Missing kfree_skb() in AF_KEY, from Julia Lawall.
      
       3) Refcount leak and source address handling fix in l2tp from James
          Chapman.
      
       4) Memory leak fix in CAIF from Tomasz Gregorek.
      
       5) When routes are cloned from ipv6 addrconf routes, we don't process
          expirations properly.  Fix from Gao Feng.
      
       6) Fix panic on DMA errors in atl1 driver, from Tony Zelenoff.
      
       7) Only enable interrupts in 8139cp driver after we've registered the
          IRQ handler.  From Jason Wang.
      
       8) Fix too many reads of KS_CIDER register in ks8851 during probe,
          fixing crashes on spurious interrupts.  From Matt Renzelmann.
      
       9) Missing include in ath5k driver and missing iounmap on probe
          failure, from Jonathan Bither.
      
      10) Fix RX packet handling in smsc911x driver, from Will Deacon.
      
      11) Fix ixgbe WoL on fiber by leaving the laser on during shutdown.
      
      12) ks8851 needs MAX_RECV_FRAMES increased otherwise the internal MAC
          buffers are easily overflown.  Fix from Davide Cimingahi.
      
      13) Fix memory leaks in peak_usb CAN driver, from Jesper Juhl.
      
      14) gred packet scheduler can dump in WRED more when doing a netlink
          dump.  Fix from David Ward.
      
      15) Fix MTU in USB smsc75xx driver, from Stephane Fillod.
      
      16) Dummy device needs ->ndo_uninit handler to properly handle
          ->ndo_init failures.  From Hiroaki SHIMODA.
      
      17) Fix TX fragmentation in ath9k driver, from Sujith Manoharan.
      
      18) Missing RTNL lock in ixgbe PM resume, from Benjamin Poirier.
      
      19) Missing iounmap in farsync WAN driver, from Julia Lawall.
      
      20) With LRO/GRO, tcp_grow_window() is easily tricked into not growing
          the receive window properly, and this hurts performance.  Fix from
          Eric Dumazet.
      
      21) Network namespace init failure can leak net_generic data, fix from
          Julian Anastasov.
      
      22) Fix skb_over_panic due to mis-accounting in TCP for partially ACK'd
          SKBs.  From Eric Dumazet.
      
      23) New IDs for qmi_wwan driver, from Bjørn Mork.
      
      24) Fix races in ax25_exit(), from Eric W. Biederman.
      
      25) IPV6 TCP doesn't handle TCP_MAXSEG socket option properly, copy over
          logic from the IPV4 side.  From Neal Cardwell.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits)
        tcp: fix TCP_MAXSEG for established IPv6 passive sockets
        drivers/net: Do not free an IRQ if its request failed
        drop_monitor: allow more events per second
        ks8851: Fix request_irq/free_irq mismatch
        net/hyperv: Adding cancellation to ensure rndis filter is closed
        ks8851: Fix mutex deadlock in ks8851_net_stop()
        net ax25: Reorder ax25_exit to remove races.
        icplus: fix interrupt for IC+ 101A/G and 1001LF
        net: qmi_wwan: support Sierra Wireless MC77xx devices in QMI mode
        bnx2x: off by one in bnx2x_ets_e3b0_sp_pri_to_cos_set()
        ksz884x: don't copy too much in netdev_set_mac_address()
        tcp: fix retransmit of partially acked frames
        netns: do not leak net_generic data on failed init
        net/sock.h: fix sk_peek_off kernel-doc warning
        tcp: fix tcp_grow_window() for large incoming frames
        drivers/net/wan/farsync.c: add missing iounmap
        davinci_mdio: Fix MDIO timeout check
        ipv6: clean up rt6_clean_expires
        ipv6: fix rt6_update_expires
        arcnet: rimi: Fix device name in debug output
        ...
      7e296295
    • Benjamin Herrenschmidt's avatar
      powerpc/mpic: Properly set default triggers · 446f6d06
      Benjamin Herrenschmidt authored
      
      
      This gets rid of the unused default senses array, and replaces the
      incorrect use of IRQ_TYPE_NONE with the new IRQ_TYPE_DEFAULT for
      the initial set_trigger() call when mapping an interrupt.
      
      This in turn makes us read the HW state and update the irq desc
      accordingly.
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      446f6d06
    • Benjamin Herrenschmidt's avatar
      irq: Add IRQ_TYPE_DEFAULT for use by PIC drivers · 3fca40c7
      Benjamin Herrenschmidt authored
      
      
      This is meant typically to allow a PIC driver's irq domain map() callback
      to establish sane defaults for the interrupt (and make sure that the HW
      and the irq_desc are in sync as far as the trigger is concerned).
      
      The irq core may not call the set_trigger callback if it thinks the
      trigger is already set to the right setting, so we need to ensure new
      descriptors are properly synchronized with the hardware.
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3fca40c7
    • Benjamin Herrenschmidt's avatar
      powerpc/mpic: Fix confusion between hw_irq and virq · 3a2b4f7c
      Benjamin Herrenschmidt authored
      
      
      mpic_is_ipi() takes a virq and immediately converts it to a hw_irq.
      
      However, one of the two call sites calls it with a ... hw_irq. The
      other call site also happens to have the hw_irq at hand, so let's
      change it to just take that as an argument. Also change mpic_is_tm()
      for consistency.
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3a2b4f7c
    • Benjamin Herrenschmidt's avatar
      powerpc/pmac: Don't add_timer() twice · 3027691e
      Benjamin Herrenschmidt authored
      
      
      If the interrupt and the timeout happen roughly at the same
      time, we can get into a situation where the timer function
      is run while the interrupt has already been processed. In
      this case, the timer function might end up doing an add_timer
      on an already pending timer, causing a BUG_ON() to trigger.
      
      Instead, just skip the whole timeout operation if we see that
      the timer is pending. The spinlock ensures that the only way
      that happens is if we already started a new operation and thus
      the timeout can be ignored.
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3027691e
    • Gavin Shan's avatar
      powerpc/eeh: Fix crash caused by null eeh_dev · 2ef822c5
      Gavin Shan authored
      
      
      The problem was reported by Anton Blanchard. While EEH error
      happened to the PCI device without the corresponding device
      driver, kernel crash was seen. Eventually, I successfully
      reproduced the problem on Firebird-L machine with utility
      "errinjct". Initially, the device driver for Emulex ethernet
      MAC has been disabled from .config and force data parity on
      the Emulex ethernet MAC with help of "errinjct". Eventually,
      I saw the kernel crash after issueing couple of "lspci -v"
      command.
      
      The root cause behind is that the PCI device, including the
      reference to the corresponding eeh device, will be removed
      from the system while EEH does recovery. Afterwards, the
      PCI device will be probed again and added into the system
      accordingly. So it's not safe to retrieve the eeh device from
      the corresponding PCI device after the PCI device has been removed
      and not added again.
      
      The patch fixes the issue and retrieve the eeh device from OF node
      instead of PCI device after the PCI device has been removed.
      Signed-off-by: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
      Tested-by: default avatarAnton Blanchard <anton@samba.org>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      2ef822c5
    • Benjamin Herrenschmidt's avatar
  2. 22 Apr, 2012 1 commit
  3. 21 Apr, 2012 26 commits