1. 17 Jun, 2012 2 commits
    • Arnd Bergmann's avatar
      arm: versatile: fix and enable PCI I/O space · 9b0f7e39
      Arnd Bergmann authored
      With commit 4d5fc58d (ARM: remove bunch of now unused
      mach/io.h files), the I/O space setup was completely broken on
      versatile. This patch fixes that and prepares for further
      I/O space clean-up.
      
      I/O space handling on the versatile platform is currently
      broken in multiple ways. Most importantly, the ports do
      not get mapped into the virtual address space at all.
      
      Also, there is some amount of confusion between PCI I/O
      space and other statically mapped MMIO registers in the
      platform code:
      
      * The __io_address() macro that is used to access the
        platform register maps to the same __io macro that gets
        used for I/O space.
      
      * The IO_SPACE_LIMIT is set to a value that is much larger
        than the total available space.
      
      * The I/O resource of the PCI bus is set to the physical
        address of the mapping, which is way outside of the
        actual I/O space limit as well as the address range that
        gets decoded by traditional PCI cards.
      
      * No attempt is made to stay outside of the ISA port range
        that some device drivers try access.
      
      * No resource gets requested as a child of ioport_resource,
        but an IORESOURCE_IO type mapping gets requested
        as a child of iomem_resource.
      
      This patch attempts to correct all of the above. This makes
      it possible to use virtio-pci based virtual devices as well
      as actual PCI cards including those with legacy ISA port
      ranges like VGA.
      
      Some of the issues seem to be duplicated on other platforms.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      [rob: update to 3.5-rc2 and io.h cleanup related changes]
      Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
      Tested-by: default avatarRobert Schwebel <r.schwebel@pengutronix.de>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      9b0f7e39
    • Olof Johansson's avatar
      Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixes · 7dea9e73
      Olof Johansson authored
      * 'fixes' of git://github.com/hzhuang1/linux:
        ARM: mmp: fix missing cascade_irq in irq handler
        ARM: dts: update memory size on brownstone
      7dea9e73
  2. 08 Jun, 2012 2 commits
    • Olof Johansson's avatar
      Merge tag 'omap-fixes-for-v3.5-rc1' of... · f9c15a1b
      Olof Johansson authored
      Merge tag 'omap-fixes-for-v3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
      
      The biggest fix here is the long pending patch mux UART pins so PM
      retention idle works again.
      
      Also included are few other PM wake-up related fixes, and removal of
      dead cpu detection code.
      
      The other fixes are trivial build and randconfig related fixes.
      
      * tag 'omap-fixes-for-v3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
        ARM: OMAP2+: Fix compile for CONFIG_TIDSPBRIDGE platform init code
        ARM: OMAP3: Fix omap3_l3_block_irq warning when CONFIG_BUG is not set
        ARM: OMAP: Fix MMC_OMAP build when only MMC_OMAP_HS is selected
        OMAP2+: UART: Add mechanism to probe uart pins and configure rx wakeup
        ARM: OMAP: Fix lis3lv02d accelerometer to use gpio_to_irq
        ARM: OMAP: SoC detection: remove unused cpu_is macros
        ARM: OMAP3: clock data: cleanup AM3[35]x SoC detection
        arm: omap3: am35x: Don't mark missing features as present
        ARM: OMAP3: PM: fix shared PRCM interrupts: leave disabled at boot
        ARM: OMAP2+: INTC: fix suspend abort, set IRQCHIP_SKIP_SET_WAKE
      f9c15a1b
    • Rob Herring's avatar
      ARM: highbank: Add smc calls to enable/disable the L2 · 8e56130d
      Rob Herring authored
      Linux runs in non-secure mode on highbank, so we need secure monitor calls
      to enable and disable the PL310. Rather than invent new smc calls, the same
      calling convention used by OMAP is used here.
      Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      8e56130d
  3. 07 Jun, 2012 8 commits
  4. 06 Jun, 2012 3 commits
  5. 05 Jun, 2012 4 commits
  6. 04 Jun, 2012 6 commits
  7. 03 Jun, 2012 2 commits
  8. 02 Jun, 2012 13 commits
    • Joe Thornber's avatar
      dm thin: provide userspace access to pool metadata · cc8394d8
      Joe Thornber authored
      This patch implements two new messages that can be sent to the thin
      pool target allowing it to take a snapshot of the _metadata_.  This,
      read-only snapshot can be accessed by userland, concurrently with the
      live target.
      
      Only one metadata snapshot can be held at a time.  The pool's status
      line will give the block location for the current msnap.
      
      Since version 0.1.5 of the userland thin provisioning tools, the
      thin_dump program displays the msnap as follows:
      
          thin_dump -m <msnap root> <metadata dev>
      
      Available here: https://github.com/jthornber/thin-provisioning-tools
      
      Now that userland can access the metadata we can do various things
      that have traditionally been kernel side tasks:
      
           i) Incremental backups.
      
           By using metadata snapshots we can work out what blocks have
           changed over time.  Combined with data snapshots we can ensure
           the data doesn't change while we back it up.
      
           A short proof of concept script can be found here:
      
           https://github.com/jthornber/thinp-test-suite/blob/master/incremental_backup_example.rb
      
           ii) Migration of thin devices from one pool to another.
      
           iii) Merging snapshots back into an external origin.
      
           iv) Asyncronous replication.
      Signed-off-by: default avatarJoe Thornber <ejt@redhat.com>
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      cc8394d8
    • Mike Snitzer's avatar
      dm thin: use slab mempools · a24c2569
      Mike Snitzer authored
      Use dedicated caches prefixed with a "dm_" name rather than relying on
      kmalloc mempools backed by generic slab caches so the memory usage of
      thin provisioning (and any leaks) can be accounted for independently.
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      a24c2569
    • Mikulas Patocka's avatar
      dm mpath: allow ioctls to trigger pg init · 35991652
      Mikulas Patocka authored
      After the failure of a group of paths, any alternative paths that
      need initialising do not become available until further I/O is sent to
      the device.  Until this has happened, ioctls return -EAGAIN.
      
      With this patch, new paths are made available in response to an ioctl
      too.  The processing of the ioctl gets delayed until this has happened.
      
      Instead of returning an error, we submit a work item to kmultipathd
      (that will potentially activate the new path) and retry in ten
      milliseconds.
      
      Note that the patch doesn't retry an ioctl if the ioctl itself fails due
      to a path failure.  Such retries should be handled intelligently by the
      code that generated the ioctl in the first place, noting that some SCSI
      commands should not be retried because they are not idempotent (XOR write
      commands).  For commands that could be retried, there is a danger that
      if the device rejected the SCSI command, the path could be errorneously
      marked as failed, and the request would be retried on another path which
      might fail too.  It can be determined if the failure happens on the
      device or on the SCSI controller, but there is no guarantee that all
      SCSI drivers set these flags correctly.
      Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      35991652
    • Mike Christie's avatar
      dm mpath: delay retry of bypassed pg · f220fd4e
      Mike Christie authored
      If I/O needs retrying and only bypassed priority groups are available,
      set the pg_init_delay_retry flag to wait before retrying.
      
      If, for example, the reason for the bypass is that the controller is
      getting reset or there is a firmware upgrade happening, retrying right
      away would cause a flood of log messages and retries for what could be a
      few seconds or even several minutes.
      Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
      Acked-by: default avatarMike Snitzer <snitzer@redhat.com>
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      f220fd4e
    • Mike Snitzer's avatar
      dm mpath: reduce size of struct multipath · 1fbdd2b3
      Mike Snitzer authored
      Move multipath structure's 'lock' and 'queue_size' members to eliminate
      two 4-byte holes.  Also use a bit within a single unsigned int for each
      existing flag (saves 8-bytes).  This allows future flags to be added
      without each consuming an unsigned int.
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      Acked-by: default avatarHannes Reinecke <hare@suse.de>
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      1fbdd2b3
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 4fc3acf2
      Linus Torvalds authored
      Pull networking updates from David Miller:
      
       1) Make syn floods consume significantly less resources by
      
          a) Not pre-COW'ing routing metrics for SYN/ACKs
          b) Mirroring the device queue mapping of the SYN for the SYN/ACK
             reply.
      
          Both from Eric Dumazet.
      
       2) Fix calculation errors in Byte Queue Limiting, from Hiroaki SHIMODA.
      
       3) Validate the length requested when building a paged SKB for a
          socket, so we don't overrun the page vector accidently.  From Jason
          Wang.
      
       4) When netlabel is disabled, we abort all IP option processing when we
          see a CIPSO option.  This isn't the right thing to do, we should
          simply skip over it and continue processing the remaining options
          (if any).  Fix from Paul Moore.
      
       5) SRIOV fixes for the mellanox driver from Jack orgenstein and Marcel
          Apfelbaum.
      
       6) 8139cp enables the receiver before the ring address is properly
          programmed, which potentially lets the device crap over random
          memory.  Fix from Jason Wang.
      
       7) e1000/e1000e fixes for i217 RST handling, and an improper buffer
          address reference in jumbo RX frame processing from Bruce Allan and
          Sebastian Andrzej Siewior, respectively.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        fec_mpc52xx: fix timestamp filtering
        mcs7830: Implement link state detection
        e1000e: fix Rapid Start Technology support for i217
        e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
        r8169: call netif_napi_del at errpaths and at driver unload
        tcp: reflect SYN queue_mapping into SYNACK packets
        tcp: do not create inetpeer on SYNACK message
        8139cp/8139too: terminate the eeprom access with the right opmode
        8139cp: set ring address before enabling receiver
        cipso: handle CIPSO options correctly when NetLabel is disabled
        net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()
        bql: Avoid possible inconsistent calculation.
        bql: Avoid unneeded limit decrement.
        bql: Fix POSDIFF() to integer overflow aware.
        net/mlx4_core: Fix obscure mlx4_cmd_box parameter in QUERY_DEV_CAP
        net/mlx4_core: Check port out-of-range before using in mlx4_slave_cap
        net/mlx4_core: Fixes for VF / Guest startup flow
        net/mlx4_en: Fix improper use of "port" parameter in mlx4_en_event
        net/mlx4_core: Fix number of EQs used in ICM initialisation
        net/mlx4_core: Fix the slave_id out-of-range test in mlx4_eq_int
      4fc3acf2
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 63004afa
      Linus Torvalds authored
      Pull straggler x86 fixes from Peter Anvin:
       "Three groups of patches:
      
        - EFI boot stub documentation and the ability to print error messages;
        - Removal for PTRACE_ARCH_PRCTL for x32 (obsolete interface which
          should never have been ported, and the port is broken and
          potentially dangerous.)
        - ftrace stack corruption fixes.  I'm not super-happy about the
          technical implementation, but it is probably the least invasive in
          the short term.  In the future I would like a single method for
          nesting the debug stack, however."
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, x32, ptrace: Remove PTRACE_ARCH_PRCTL for x32
        x86, efi: Add EFI boot stub documentation
        x86, efi; Add EFI boot stub console support
        x86, efi: Only close open files in error path
        ftrace/x86: Do not change stacks in DEBUG when calling lockdep
        x86: Allow nesting of the debug stack IDT setting
        x86: Reset the debug_stack update counter
        ftrace: Use breakpoint method to update ftrace caller
        ftrace: Synchronize variable setting with breakpoints
      63004afa
    • Linus Torvalds's avatar
      tty: Revert the tty locking series, it needs more work · f309532b
      Linus Torvalds authored
      This reverts the tty layer change to use per-tty locking, because it's
      not correct yet, and fixing it will require some more deep surgery.
      
      The main revert is d29f3ef3 ("tty_lock: Localise the lock"), but
      there are several smaller commits that built upon it, they also get
      reverted here. The list of reverted commits is:
      
        fde86d31 - tty: add lockdep annotations
        8f6576ad - tty: fix ldisc lock inversion trace
        d3ca8b64 - pty: Fix lock inversion
        b1d679af - tty: drop the pty lock during hangup
        abcefe5f - tty/amiserial: Add missing argument for tty_unlock()
        fd11b42e - cris: fix missing tty arg in wait_event_interruptible_tty call
        d29f3ef3 - tty_lock: Localise the lock
      
      The revert had a trivial conflict in the 68360serial.c staging driver
      that got removed in the meantime.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f309532b
    • Stephan Gatzka's avatar
      fec_mpc52xx: fix timestamp filtering · 9ca3cc6f
      Stephan Gatzka authored
      skb_defer_rx_timestamp was called with a freshly allocated skb but must
      be called with rskb instead.
      Signed-off-by: default avatarStephan Gatzka <stephan@gatzka.org>
      Cc: stable <stable@vger.kernel.org>
      Acked-by: default avatarRichard Cochran <richardcochran@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9ca3cc6f
    • Ondrej Zary's avatar
      mcs7830: Implement link state detection · b1ff4f96
      Ondrej Zary authored
      Add .status callback that detects link state changes.
      Tested with MCS7832CV-AA chip (9710:7830, identified as rev.C by the driver).
      Fixes https://bugzilla.kernel.org/show_bug.cgi?id=28532Signed-off-by: default avatarOndrej Zary <linux@rainbow-software.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b1ff4f96
    • Linus Torvalds's avatar
      Merge 'for-linus' branches from git://git.kernel.org/pub/scm/linux/kernel/git/viro/{vfs,signal} · 233e562e
      Linus Torvalds authored
      Pull vfs fix and a fix from the signal changes for frv from Al Viro.
      
      The __kernel_nlink_t for powerpc got scrogged because 64-bit powerpc
      actually depended on the default "unsigned long", while 32-bit powerpc
      had an explicit override to "unsigned short".  Al didn't notice, and
      made both of them be the unsigned short.
      
      The frv signal fix is fallout from simplifying the do_notify_resume()
      code, and leaving an extra parenthesis.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        powerpc: Fix size of st_nlink on 64bit
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
        frv: Remove bogus closing parenthesis
      233e562e
    • Anton Blanchard's avatar
      powerpc: Fix size of st_nlink on 64bit · 0fd7bee1
      Anton Blanchard authored
      commit e57f93cc (powerpc: get rid of nlink_t uses, switch to
      explicitly-sized type) changed the size of st_nlink on ppc64 from
      a long to a short, resulting in boot failures.
      Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      0fd7bee1
    • Geert Uytterhoeven's avatar
      frv: Remove bogus closing parenthesis · a3936249
      Geert Uytterhoeven authored
      Introduced by commit 6fd84c08
      ("TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set")
      Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      a3936249