1. 05 3月, 2014 11 次提交
    • M
      x86/efi: Wire up CONFIG_EFI_MIXED · 7d453eee
      Matt Fleming 提交于
      Add the Kconfig option and bump the kernel header version so that boot
      loaders can check whether the handover code is available if they want.
      
      The xloadflags field in the bzImage header is also updated to reflect
      that the kernel supports both entry points by setting both of
      XLF_EFI_HANDOVER_32 and XLF_EFI_HANDOVER_64 when CONFIG_EFI_MIXED=y.
      XLF_CAN_BE_LOADED_ABOVE_4G is disabled so that the kernel text is
      guaranteed to be addressable with 32-bits.
      
      Note that no boot loaders should be using the bits set in xloadflags to
      decide which entry point to jump to. The entire scheme is based on the
      concept that 32-bit bootloaders always jump to ->handover_offset and
      64-bit loaders always jump to ->handover_offset + 512. We set both bits
      merely to inform the boot loader that it's safe to use the native
      handover offset even if the machine type in the PE/COFF header claims
      otherwise.
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      7d453eee
    • M
      x86/efi: Add mixed runtime services support · 4f9dbcfc
      Matt Fleming 提交于
      Setup the runtime services based on whether we're booting in EFI native
      mode or not. For non-native mode we need to thunk from 64-bit into
      32-bit mode before invoking the EFI runtime services.
      
      Using the runtime services after SetVirtualAddressMap() is slightly more
      complicated because we need to ensure that all the addresses we pass to
      the firmware are below the 4GB boundary so that they can be addressed
      with 32-bit pointers, see efi_setup_page_tables().
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      4f9dbcfc
    • M
      x86/efi: Firmware agnostic handover entry points · b8ff87a6
      Matt Fleming 提交于
      The EFI handover code only works if the "bitness" of the firmware and
      the kernel match, i.e. 64-bit firmware and 64-bit kernel - it is not
      possible to mix the two. This goes against the tradition that a 32-bit
      kernel can be loaded on a 64-bit BIOS platform without having to do
      anything special in the boot loader. Linux distributions, for one thing,
      regularly run only 32-bit kernels on their live media.
      
      Despite having only one 'handover_offset' field in the kernel header,
      EFI boot loaders use two separate entry points to enter the kernel based
      on the architecture the boot loader was compiled for,
      
          (1) 32-bit loader: handover_offset
          (2) 64-bit loader: handover_offset + 512
      
      Since we already have two entry points, we can leverage them to infer
      the bitness of the firmware we're running on, without requiring any boot
      loader modifications, by making (1) and (2) valid entry points for both
      CONFIG_X86_32 and CONFIG_X86_64 kernels.
      
      To be clear, a 32-bit boot loader will always use (1) and a 64-bit boot
      loader will always use (2). It's just that, if a single kernel image
      supports (1) and (2) that image can be used with both 32-bit and 64-bit
      boot loaders, and hence both 32-bit and 64-bit EFI.
      
      (1) and (2) must be 512 bytes apart at all times, but that is already
      part of the boot ABI and we could never change that delta without
      breaking existing boot loaders anyhow.
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      b8ff87a6
    • M
      x86/efi: Split the boot stub into 32/64 code paths · c116e8d6
      Matt Fleming 提交于
      Make the decision which code path to take at runtime based on
      efi_early->is64.
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      c116e8d6
    • M
      x86/efi: Add early thunk code to go from 64-bit to 32-bit · 0154416a
      Matt Fleming 提交于
      Implement the transition code to go from IA32e mode to protected mode in
      the EFI boot stub. This is required to use 32-bit EFI services from a
      64-bit kernel.
      
      Since EFI boot stub is executed in an identity-mapped region, there's
      not much we need to do before invoking the 32-bit EFI boot services.
      However, we do reload the firmware's global descriptor table
      (efi32_boot_gdt) in case things like timer events are still running in
      the firmware.
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      0154416a
    • M
      x86/efi: Build our own EFI services pointer table · 54b52d87
      Matt Fleming 提交于
      It's not possible to dereference the EFI System table directly when
      booting a 64-bit kernel on a 32-bit EFI firmware because the size of
      pointers don't match.
      
      In preparation for supporting the above use case, build a list of
      function pointers on boot so that callers don't have to worry about
      converting pointer sizes through multiple levels of indirection.
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      54b52d87
    • M
      efi: Add separate 32-bit/64-bit definitions · 677703ce
      Matt Fleming 提交于
      The traditional approach of using machine-specific types such as
      'unsigned long' does not allow the kernel to interact with firmware
      running in a different CPU mode, e.g. 64-bit kernel with 32-bit EFI.
      
      Add distinct EFI structure definitions for both 32-bit and 64-bit so
      that we can use them in the 32-bit and 64-bit code paths.
      Acked-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      677703ce
    • M
      x86/efi: Delete dead code when checking for non-native · 099240ac
      Matt Fleming 提交于
      Both efi_free_boot_services() and efi_enter_virtual_mode() are invoked
      from init/main.c, but only if the EFI runtime services are available.
      This is not the case for non-native boots, e.g. where a 64-bit kernel is
      booted with 32-bit EFI firmware.
      
      Delete the dead code.
      Acked-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      099240ac
    • M
      x86/mm/pageattr: Always dump the right page table in an oops · 426e34cc
      Matt Fleming 提交于
      Now that we have EFI-specific page tables we need to lookup the pgd when
      dumping those page tables, rather than assuming that swapper_pgdir is
      the current pgdir.
      
      Remove the double underscore prefix, which is usually reserved for
      static functions.
      Acked-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      426e34cc
    • M
      x86, tools: Consolidate #ifdef code · 993c30a0
      Matt Fleming 提交于
      Instead of littering main() with #ifdef CONFIG_EFI_STUB, move the logic
      into separate functions that do nothing if the config option isn't set.
      This makes main() much easier to read.
      Acked-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      993c30a0
    • M
      x86/boot: Cleanup header.S by removing some #ifdefs · 86134a1b
      Matt Fleming 提交于
      handover_offset is now filled out by build.c. Don't set a default value
      as it will be overwritten anyway.
      Acked-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
      86134a1b
  2. 17 2月, 2014 3 次提交
  3. 16 2月, 2014 12 次提交
    • K
      of: search the best compatible match first in __of_match_node() · 06b29e76
      Kevin Hao 提交于
      Currently, of_match_node compares each given match against all node's
      compatible strings with of_device_is_compatible.
      
      To achieve multiple compatible strings per node with ordering from
      specific to generic, this requires given matches to be ordered from
      specific to generic. For most of the drivers this is not true and also
      an alphabetical ordering is more sane there.
      
      Therefore, this patch introduces a function to match each of the node's
      compatible strings against all given compatible matches without type and
      name first, before checking the next compatible string. This implies
      that node's compatibles are ordered from specific to generic while
      given matches can be in any order. If we fail to find such a match
      entry, then fall-back to the old method in order to keep compatibility.
      
      Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
      Signed-off-by: NKevin Hao <haokexin@gmail.com>
      Tested-by: NStephen Chivers <schivers@csc.com>
      Signed-off-by: NRob Herring <robh@kernel.org>
      06b29e76
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 946dd683
      Linus Torvalds 提交于
      Pull SCSI target fixes from Nicholas Bellinger:
       "Mostly minor fixes this time to v3.14-rc1 related changes.  Also
        included is one fix for a free after use regression in persistent
        reservations UNREGISTER logic that is CC'ed to >= v3.11.y stable"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        Target/sbc: Fix protection copy routine
        IB/srpt: replace strict_strtoul() with kstrtoul()
        target: Simplify command completion by removing CMD_T_FAILED flag
        iser-target: Fix leak on failure in isert_conn_create_fastreg_pool
        iscsi-target: Fix SNACK Type 1 + BegRun=0 handling
        target: Fix missing length check in spc_emulate_evpd_83()
        qla2xxx: Remove last vestiges of qla_tgt_cmd.cmd_list
        target: Fix 32-bit + CONFIG_LBDAF=n link error w/ sector_div
        target: Fix free-after-use regression in PR unregister
      946dd683
    • L
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · 2d0ef4fb
      Linus Torvalds 提交于
      Pull i2c fixes from Wolfram Sang:
       "i2c has a bugfix and documentation improvements for you"
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        Documentation: i2c: mention ACPI method for instantiating devices
        Documentation: i2c: describe devicetree method for instantiating devices
        i2c: mv64xxx: refactor message start to ensure proper initialization
      2d0ef4fb
    • L
      Merge branches 'irq-urgent-for-linus' and 'irq-core-for-linus' of... · 5a667a0c
      Linus Torvalds 提交于
      Merge branches 'irq-urgent-for-linus' and 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
      
      Pull irq update from Thomas Gleixner:
       "Fix from the urgent branch: a trivial oneliner adding the missing
        Kconfig dependency curing build failures which have been discovered by
        several build robots.
      
        The update in the irq-core branch provides a new function in the
        irq/devres code, which is a prerequisite for driver developers to get
        rid of boilerplate code all over the place.
      
        Not a bugfix, but it has zero impact on the current kernel due to the
        lack of users.  It's simpler to provide the infrastructure to
        interested parties via your tree than fulfilling the wishlist of
        driver maintainers on which particular commit or tag this should be
        based on"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Add missing irq_to_desc export for CONFIG_SPARSE_IRQ=n
      
      * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Add devm_request_any_context_irq()
      5a667a0c
    • L
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3a19c07c
      Linus Torvalds 提交于
      Pull timer fixes from Thomas Gleixner:
       "The following trilogy of patches brings you:
      
         - fix for a long standing math overflow issue with HZ < 60
      
         - an onliner fix for a corner case in the dreaded tick broadcast
           mechanism affecting a certain range of AMD machines which are
           infested with the infamous automagic C1E power control misfeature
      
         - a fix for one of the ARM platforms which allows the kernel to
           proceed and boot instead of stupidly panicing for no good reason.
           The patch is slightly larger than necessary, but it's less ugly
           than the alternative 5 liner"
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        tick: Clear broadcast pending bit when switching to oneshot
        clocksource: Kona: Print warning rather than panic
        time: Fix overflow when HZ is smaller than 60
      3a19c07c
    • L
      Merge tag 'trace-fixes-v3.14-rc2' of... · 9bd01b9b
      Linus Torvalds 提交于
      Merge tag 'trace-fixes-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
      
      Pull twi tracing fixes from Steven Rostedt:
       "Two urgent fixes in the tracing utility.
      
        The first is a fix for the way the ring buffer stores timestamps.
        After a restructure of the code was done, the ring buffer timestamp
        logic missed the fact that the first event on a sub buffer is to have
        a zero delta, as the full timestamp is stored on the sub buffer
        itself.  But because the delta was not cleared to zero, the timestamp
        for that event will be calculated as the real timestamp + the delta
        from the last timestamp.  This can skew the timestamps of the events
        and have them say they happened when they didn't really happen.
        That's bad.
      
        The second fix is for modifying the function graph caller site.  When
        the stop machine was removed from updating the function tracing code,
        it missed updating the function graph call site location.  It is still
        modified as if it is being done via stop machine.  But it's not.  This
        can lead to a GPF and kernel crash if the function graph call site
        happens to lie between cache lines and one CPU is executing it while
        another CPU is doing the update.  It would be a very hard condition to
        hit, but the result is severe enough to have it fixed ASAP"
      
      * tag 'trace-fixes-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        ftrace/x86: Use breakpoints for converting function graph caller
        ring-buffer: Fix first commit on sub-buffer having non-zero delta
      9bd01b9b
    • L
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7fc92804
      Linus Torvalds 提交于
      Pull x86 EFI fixes from Peter Anvin:
       "A few more EFI-related fixes"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/efi: Check status field to validate BGRT header
        x86/efi: Fix 32-bit fallout
      7fc92804
    • L
      Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 83660b73
      Linus Torvalds 提交于
      Pull ARM SoC fixes from Kevin Hilman:
       "A collection of ARM SoC fixes for v3.14-rc1.
      
        Mostly a collection of Kconfig, device tree data and compilation fixes
        along with fix to drivers/phy that fixes a boot regression on some
        Marvell mvebu platforms"
      
      * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        dma: mv_xor: Silence a bunch of LPAE-related warnings
        ARM: ux500: disable msp2 device tree node
        ARM: zynq: Reserve not DMAable space in front of the kernel
        ARM: multi_v7_defconfig: Select CONFIG_SOC_DRA7XX
        ARM: imx6: Initialize low-power mode early again
        ARM: pxa: fix various compilation problems
        ARM: pxa: fix compilation problem on AM300EPD board
        ARM: at91: add Atmel's SAMA5D3 Xplained board
        spi/atmel: document clock properties
        mmc: atmel-mci: document clock properties
        ARM: at91: enable USB host on at91sam9n12ek board
        ARM: at91/dt: fix sama5d3 ohci hclk clock reference
        ARM: at91/dt: sam9263: fix compatibility string for the I2C
        ata: sata_mv: Fix probe failures with optional phys
        drivers: phy: Add support for optional phys
        drivers: phy: Make NULL a valid phy reference
        ARM: fix HAVE_ARM_TWD selection for OMAP and shmobile
        ARM: moxart: move DMA_OF selection to driver
        ARM: hisi: fix kconfig warning on HAVE_ARM_TWD
      83660b73
    • W
    • W
    • F
      Btrfs: use right clone root offset for compressed extents · 93de4ba8
      Filipe David Borba Manana 提交于
      For non compressed extents, iterate_extent_inodes() gives us offsets
      that take into account the data offset from the file extent items, while
      for compressed extents it doesn't. Therefore we have to adjust them before
      placing them in a send clone instruction. Not doing this adjustment leads to
      the receiving end requesting for a wrong a file range to the clone ioctl,
      which results in different file content from the one in the original send
      root.
      
      Issue reproducible with the following excerpt from the test I made for
      xfstests:
      
        _scratch_mkfs
        _scratch_mount "-o compress-force=lzo"
      
        $XFS_IO_PROG -f -c "truncate 118811" $SCRATCH_MNT/foo
        $XFS_IO_PROG -c "pwrite -S 0x0d -b 39987 92267 39987" $SCRATCH_MNT/foo
      
        $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
      
        $XFS_IO_PROG -c "pwrite -S 0x3e -b 80000 200000 80000" $SCRATCH_MNT/foo
        $BTRFS_UTIL_PROG filesystem sync $SCRATCH_MNT
        $XFS_IO_PROG -c "pwrite -S 0xdc -b 10000 250000 10000" $SCRATCH_MNT/foo
        $XFS_IO_PROG -c "pwrite -S 0xff -b 10000 300000 10000" $SCRATCH_MNT/foo
      
        # will be used for incremental send to be able to issue clone operations
        $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/clones_snap
      
        $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
      
        $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
        $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
            -x $SCRATCH_MNT/mysnap2/clones_snap $SCRATCH_MNT/mysnap2
        $FSSUM_PROG -A -f -w $tmp/clones.fssum $SCRATCH_MNT/clones_snap \
            -x $SCRATCH_MNT/clones_snap/mysnap1 -x $SCRATCH_MNT/clones_snap/mysnap2
      
        $BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
        $BTRFS_UTIL_PROG send $SCRATCH_MNT/clones_snap -f $tmp/clones.snap
        $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 \
            -c $SCRATCH_MNT/clones_snap $SCRATCH_MNT/mysnap2 -f $tmp/2.snap
      
        _scratch_unmount
        _scratch_mkfs
        _scratch_mount
      
        $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/1.snap
        $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
      
        $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/clones.snap
        $FSSUM_PROG -r $tmp/clones.fssum $SCRATCH_MNT/clones_snap 2>> $seqres.full
      
        $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/2.snap
        $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
      Signed-off-by: NFilipe David Borba Manana <fdmanana@gmail.com>
      Signed-off-by: NChris Mason <clm@fb.com>
      93de4ba8
    • A
      btrfs: fix null pointer deference at btrfs_sysfs_add_one+0x105 · f085381e
      Anand Jain 提交于
      bdev is null when disk has disappeared and mounted with
      the degrade option
      
      stack trace
      ---------
      btrfs_sysfs_add_one+0x105/0x1c0 [btrfs]
      open_ctree+0x15f3/0x1fe0 [btrfs]
      btrfs_mount+0x5db/0x790 [btrfs]
      ? alloc_pages_current+0xa4/0x160
      mount_fs+0x34/0x1b0
      vfs_kern_mount+0x62/0xf0
      do_mount+0x22e/0xa80
      ? __get_free_pages+0x9/0x40
      ? copy_mount_options+0x31/0x170
      SyS_mount+0x7e/0xc0
      system_call_fastpath+0x16/0x1b
      ---------
      
      reproducer:
      -------
      mkfs.btrfs -draid1 -mraid1 /dev/sdc /dev/sdd
      (detach a disk)
      devmgt detach /dev/sdc [1]
      mount -o degrade /dev/sdd /btrfs
      -------
      
      [1] github.com/anajain/devmgt.git
      Signed-off-by: NAnand Jain <Anand.Jain@oracle.com>
      Tested-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
      Signed-off-by: NChris Mason <clm@fb.com>
      f085381e
  4. 15 2月, 2014 14 次提交
    • W
      i2c: mv64xxx: refactor message start to ensure proper initialization · 79970db2
      Wolfram Sang 提交于
      Because the offload mechanism can fall back to a standard transfer,
      having two seperate initialization states is unfortunate. Let's just
      have one state which does things consistently. This fixes a bug where
      some preparation was missing when the fallback happened. And it makes
      the code much easier to follow. To implement this, we put the check
      if offload is possible at the top of the offload setup function.
      Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
      Tested-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
      Cc: stable@vger.kernel.org # v3.12+
      Fixes: 930ab3d4 (i2c: mv64xxx: Add I2C Transaction Generator support)
      79970db2
    • L
      Merge tag 'usb-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · ca033390
      Linus Torvalds 提交于
      Pull USB fixes from Greg KH:
       "Here is a bunch of USB fixes for 3.14-rc3.  Most of these are xhci
        reverts, fixing a bunch of reported issues with USB 3 host controller
        issues that loads of people have been hitting (with the exception of
        kernel developers, all of our machines seem to be working fine, which
        is why these took so long to get resolved...)
      
        There are some other minor fixes and new device ids, as ususal.  All
        have been in linux-next successfully"
      
      * tag 'usb-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
        usb: option: blacklist ZTE MF667 net interface
        Revert "usb: xhci: Link TRB must not occur within a USB payload burst"
        Revert "xhci: Avoid infinite loop when sg urb requires too many trbs"
        Revert "xhci: Set scatter-gather limit to avoid failed block writes."
        xhci 1.0: Limit arbitrarily-aligned scatter gather.
        Modpost: fixed USB alias generation for ranges including 0x9 and 0xA
        usb: core: Fix potential memory leak adding dyn USBdevice IDs
        USB: ftdi_sio: add Tagsys RFID Reader IDs
        usb: qcserial: add Netgear Aircard 340U
        usb-storage: enable multi-LUN scanning when needed
        USB: simple: add Dynastream ANT USB-m Stick device support
        usb-storage: add unusual-devs entry for BlackBerry 9000
        usb-storage: restrict bcdDevice range for Super Top in Cypress ATACB
        usb: phy: move some error messages to debug
        usb: ftdi_sio: add Mindstorms EV3 console adapter
        usb: dwc2: fix memory corruption in dwc2 driver
        usb: dwc2: fix role switch breakage
        usb: dwc2: bail out early when booting with "nousb"
        Revert "xhci: replace xhci_read_64() with readq()"
        Revert "xhci: replace xhci_write_64() with writeq()"
        ...
      ca033390
    • L
      Merge tag 'tty-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · 40a215fb
      Linus Torvalds 提交于
      Pull tty/serial driver fixes from Greg KH:
       "Here are a small number of tty/serial driver fixes to resolve reported
        issues with 3.14-rc and earlier (in the case of the vt bugfix).  Some
        of these have been tested and reported by a number of people as the
        tty bugfix was pretty commonly hit on some platforms.
      
        All have been in linux-next for a while"
      
      * tag 'tty-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        vt: Fix secure clear screen
        serial: 8250: Support XR17V35x fraction divisor
        n_tty: Fix stale echo output
        serial: sirf: fix kernel panic caused by unpaired spinlock
        serial: 8250_pci: unbreak last serial ports on NetMos 9865 cards
        n_tty: Fix poll() when TIME_CHAR and MIN_CHAR == 0
        serial: omap: fix rs485 probe on defered pinctrl
        serial: 8250_dw: fix compilation warning when !CONFIG_PM_SLEEP
        serial: omap-serial: Move info message to probe function
        tty: Set correct tty name in 'active' sysfs attribute
        tty: n_gsm: Fix for modems with brk in modem status control
        drivers/tty/hvc: don't use module_init in non-modular hyp. console code
      40a215fb
    • L
      Merge tag 'staging-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · e2e481d6
      Linus Torvalds 提交于
      Pull staging driver fixes from Greg KH:
       "Here are a number (lots, I know) of fixes for staging drivers to
        resolve a bunch of reported issues.
      
        The largest patches here is one revert of a patch that is in 3.14-rc1
        to fix reported problems, and a sync of a usb host driver that
        required some ARM patches to go in before it could be accepted (which
        is why it missed -rc1)
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'staging-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (56 commits)
        staging/rtl8821ae: fix build, depends on MAC80211
        iio: max1363: Use devm_regulator_get_optional for optional regulator
        iio:accel:bma180: Use modifier instead of index in channel specification
        iio: adis16400: Set timestamp as the last element in chan_spec
        iio: ak8975: Fix calculation formula for convert micro tesla to gauss unit
        staging:iio:ad799x fix typo in ad799x_events[]
        iio: mxs-lradc: remove useless scale_available files
        iio: mxs-lradc: fix buffer overflow
        iio:magnetometer:mag3110: Fix output of decimal digits in show_int_plus_micros()
        iio:magnetometer:mag3110: Report busy in _read_raw() / write_raw() when buffer is enabled
        wlags49_h2: Fix overflow in wireless_set_essid()
        xlr_net: Fix missing trivial allocation check
        staging: r8188eu: overflow in rtw_p2p_get_go_device_address()
        staging: r8188eu: array overflow in rtw_mp_ioctl_hdl()
        staging: r8188eu: Fix typo in USB_DEVICE list
        usbip/userspace/libsrc/names.c: memory leak
        gpu: ion: dereferencing an ERR_PTR
        staging: comedi: usbduxsigma: fix unaligned dereferences
        staging: comedi: fix too early cleanup in comedi_auto_config()
        staging: android: ion: dummy: fix an error code
        ...
      e2e481d6
    • L
      Merge tag 'driver-core-3.14-rc3' of... · ad07f124
      Linus Torvalds 提交于
      Merge tag 'driver-core-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fix from Greg KH:
       "Here is a single driver core patch for 3.14-rc3 for the component code
        that Russell has found and fixed"
      
      * tag 'driver-core-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        drivers/base: fix devres handling for master device
      ad07f124
    • L
      Merge tag 'char-misc-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · bb0a05d7
      Linus Torvalds 提交于
      Pull char/misc fixes from Greg KH:
       "Here are some small char/misc driver fixes, along with some
        documentation updates, for 3.14-rc3.  Nothing major, just a number of
        fixes for reported issues"
      
      * tag 'char-misc-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        Revert "misc: eeprom: sunxi: Add new compatibles"
        Revert "ARM: sunxi: dt: Convert to the new SID compatibles"
        misc: mic: fix possible signed underflow (undefined behavior) in userspace API
        ARM: sunxi: dt: Convert to the new SID compatibles
        misc: eeprom: sunxi: Add new compatibles
        misc: genwqe: Fix potential memory leak when pinning memory
        Documentation:Update Documentation/zh_CN/arm64/memory.txt
        Documentation:Update Documentation/zh_CN/arm64/booting.txt
        Documentation:Chinese translation of Documentation/arm64/tagged-pointers.txt
        raw: set range for MAX_RAW_DEVS
        raw: test against runtime value of max_raw_minors
        Drivers: hv: vmbus: Don't timeout during the initial connection with host
        Drivers: hv: vmbus: Specify the target CPU that should receive notification
        VME: Correct read/write alignment algorithm
        mei: don't unset read cb ptr on reset
        mei: clear write cb from waiting list on reset
      bb0a05d7
    • J
      Btrfs: unset DCACHE_DISCONNECTED when mounting default subvol · 3a0dfa6a
      Josef Bacik 提交于
      A user was running into errors from an NFS export of a subvolume that had a
      default subvol set.  When we mount a default subvol we will use d_obtain_alias()
      to find an existing dentry for the subvolume in the case that the root subvol
      has already been mounted, or a dummy one is allocated in the case that the root
      subvol has not already been mounted.  This allows us to connect the dentry later
      on if we wander into the path.  However if we don't ever wander into the path we
      will keep DCACHE_DISCONNECTED set for a long time, which angers NFS.  It doesn't
      appear to cause any problems but it is annoying nonetheless, so simply unset
      DCACHE_DISCONNECTED in the get_default_root case and switch btrfs_lookup() to
      use d_materialise_unique() instead which will make everything play nicely
      together and reconnect stuff if we wander into the defaul subvol path from a
      different way.  With this patch I'm no longer getting the NFS errors when
      exporting a volume that has been mounted with a default subvol set.  Thanks,
      
      cc: bfields@fieldses.org
      cc: ebiederm@xmission.com
      Signed-off-by: NJosef Bacik <jbacik@fb.com>
      Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com>
      Signed-off-by: NChris Mason <clm@fb.com>
      3a0dfa6a
    • M
      Btrfs: fix max_inline mount option · feb5f965
      Mitch Harder 提交于
      Currently, the only mount option for max_inline that has any effect is
      max_inline=0.  Any other value that is supplied to max_inline will be
      adjusted to a minimum of 4k.  Since max_inline has an effective maximum
      of ~3900 bytes due to page size limitations, the current behaviour
      only has meaning for max_inline=0.
      
      This patch will allow the the max_inline mount option to accept non-zero
      values as indicated in the documentation.
      Signed-off-by: NMitch Harder <mitch.harder@sabayonlinux.org>
      Signed-off-by: NChris Mason <clm@fb.com>
      feb5f965
    • L
      Btrfs: fix a lockdep warning when cleaning up aborted transaction · a9d2d4ad
      Liu Bo 提交于
      Given now we have 2 spinlock for management of delayed refs,
      CONFIG_DEBUG_SPINLOCK=y helped me find this,
      
      [ 4723.413809] BUG: spinlock wrong CPU on CPU#1, btrfs-transacti/2258
      [ 4723.414882]  lock: 0xffff880048377670, .magic: dead4ead, .owner: btrfs-transacti/2258, .owner_cpu: 2
      [ 4723.417146] CPU: 1 PID: 2258 Comm: btrfs-transacti Tainted: G        W  O 3.12.0+ #4
      [ 4723.421321] Call Trace:
      [ 4723.421872]  [<ffffffff81680fe7>] dump_stack+0x54/0x74
      [ 4723.422753]  [<ffffffff81681093>] spin_dump+0x8c/0x91
      [ 4723.424979]  [<ffffffff816810b9>] spin_bug+0x21/0x26
      [ 4723.425846]  [<ffffffff81323956>] do_raw_spin_unlock+0x66/0x90
      [ 4723.434424]  [<ffffffff81689bf7>] _raw_spin_unlock+0x27/0x40
      [ 4723.438747]  [<ffffffffa015da9e>] btrfs_cleanup_one_transaction+0x35e/0x710 [btrfs]
      [ 4723.443321]  [<ffffffffa015df54>] btrfs_cleanup_transaction+0x104/0x570 [btrfs]
      [ 4723.444692]  [<ffffffff810c1b5d>] ? trace_hardirqs_on_caller+0xfd/0x1c0
      [ 4723.450336]  [<ffffffff810c1c2d>] ? trace_hardirqs_on+0xd/0x10
      [ 4723.451332]  [<ffffffffa015e5ee>] transaction_kthread+0x22e/0x270 [btrfs]
      [ 4723.452543]  [<ffffffffa015e3c0>] ? btrfs_cleanup_transaction+0x570/0x570 [btrfs]
      [ 4723.457833]  [<ffffffff81079efa>] kthread+0xea/0xf0
      [ 4723.458990]  [<ffffffff81079e10>] ? kthread_create_on_node+0x140/0x140
      [ 4723.460133]  [<ffffffff81692aac>] ret_from_fork+0x7c/0xb0
      [ 4723.460865]  [<ffffffff81079e10>] ? kthread_create_on_node+0x140/0x140
      [ 4723.496521] ------------[ cut here ]------------
      
      ----------------------------------------------------------------------
      
      The reason is that we get to call cond_resched_lock(&head_ref->lock) while
      still holding @delayed_refs->lock.
      
      So it's different with __btrfs_run_delayed_refs(), where we do drop-acquire
      dance before and after actually processing delayed refs.
      
      Here we don't drop the lock, others are not able to add new delayed refs to
      head_ref, so cond_resched_lock(&head_ref->lock) is not necessary here.
      Signed-off-by: NLiu Bo <bo.li.liu@oracle.com>
      Signed-off-by: NChris Mason <clm@fb.com>
      a9d2d4ad
    • C
      Revert "btrfs: add ioctl to export size of global metadata reservation" · 11bcac89
      Chris Mason 提交于
      This reverts commit 01e219e8.
      
      David Sterba found a different way to provide these features without adding a new
      ioctl.  We haven't released any progs with this ioctl yet, so I'm taking this out
      for now until we finalize things.
      Signed-off-by: NChris Mason <clm@fb.com>
      Signed-off-by: NDavid Sterba <dsterba@suse.cz>
      CC: Jeff Mahoney <jeffm@suse.com>
      11bcac89
    • L
      Merge branch 'for-3.14' of git://linux-nfs.org/~bfields/linux · 8ba74517
      Linus Torvalds 提交于
      Pull two nfsd bugfixes from Bruce Fields.
      
      * 'for-3.14' of git://linux-nfs.org/~bfields/linux:
        lockd: send correct lock when granting a delayed lock.
        nfsd4: fix acl buffer overrun
      8ba74517
    • L
      Merge tag 'md/3.14-fixes' of git://neil.brown.name/md · bd3813d5
      Linus Torvalds 提交于
      Pull md fixes from Neil Brown:
       "Two bugfixes for md
      
        both tagged for -stable"
      
      * tag 'md/3.14-fixes' of git://neil.brown.name/md:
        md/raid5: Fix CPU hotplug callback registration
        md/raid1: restore ability for check and repair to fix read errors.
      bd3813d5
    • K
      Revert "OF: base: match each node compatible against all given matches first" · 4e8ca6ee
      Kevin Hao 提交于
      This reverts commit 10535314.
      Stephen Chivers reported this is broken as we will get a match
      entry '.type = "serial"' instead of the '.compatible = "ns16550"'
      in the following scenario:
      	serial0: serial@4500 {
      		compatible = "fsl,ns16550", "ns16550";
      	}
      
      	struct of_device_id of_platform_serial_table[] = {
      		{ .compatible = "ns8250",   .data = (void *)PORT_8250, },
      		{ .compatible = "ns16450",  .data = (void *)PORT_16450, },
      		{ .compatible = "ns16550a", .data = (void *)PORT_16550A, },
      		{ .compatible = "ns16550",  .data = (void *)PORT_16550, },
      		{ .compatible = "ns16750",  .data = (void *)PORT_16750, },
      		{ .compatible = "ns16850",  .data = (void *)PORT_16850, },
      		...
      		{ .type = "serial",         .data = (void *)PORT_UNKNOWN, },
      		{ /* end of list */ },
      	};
      
      So just revert this patch, we will use another implementation to find
      the best compatible match in a follow-on patch.
      Reported-by: NStephen N Chivers <schivers@csc.com.au>
      Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
      Signed-off-by: NKevin Hao <haokexin@gmail.com>
      Signed-off-by: NRob Herring <robh@kernel.org>
      4e8ca6ee
    • G
      Revert "misc: eeprom: sunxi: Add new compatibles" · bf747103
      Greg Kroah-Hartman 提交于
      This reverts commit f0de8e04, it is
      incorrect, a future patch will fix this up properly.
      
      Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      bf747103