1. 28 Mar, 2013 1 commit
    • Thomas Petazzoni's avatar
      bus: introduce an Marvell EBU MBus driver · fddddb52
      Thomas Petazzoni authored
      
      
      The Marvell EBU SoCs have a configurable physical address space
      layout: the physical ranges of memory used to address PCI(e)
      interfaces, NOR flashes, SRAM and various other types of memory are
      configurable by software, through a mechanism of so-called 'address
      decoding windows'.
      
      This new driver mvebu-mbus consolidates the existing code to address
      the configuration of these memory ranges, which is spread into
      mach-mvebu, mach-orion5x, mach-mv78xx0, mach-dove and mach-kirkwood.
      
      Following patches convert each Marvell EBU SoC family to use this
      driver, therefore removing the old code that was configuring the
      address decoding windows.
      
      It is worth mentioning that the MVEBU_MBUS Kconfig option is
      intentionally added as a blind option. The new driver implements and
      exports the mv_mbus_dram_info() function, which is used by various
      Marvell drivers throughout the tree to get access to window
      configuration parameters that they require. This function is also
      implemented in arch/arm/plat-orion/addr-map.c, which ultimately gets
      removed at the end of this patch series. So, in order to preserve
      bisectability, we want to ensure that *either* this new driver, *or*
      the legacy code in plat-orion/addr-map.c gets compiled in.
      
      By making MVEBU_MBUS a blind option, we are sure that only a platform
      that does 'select MVEBU_MBUS' will get this new driver compiled
      in. Therefore, throughout the next patches that convert the Marvell
      sub-architectures one after the other to this new driver, we add the
      'select MVEBU_MBUS' and also ensure to remove plat-orion/addr-map.c
      from the build for this specific sub-architecture. This ensures that
      bisectability is preserved.
      
      Ealier versions of this driver had a DT binding, but since those were
      not yet agreed upon, they were removed. The driver still uses
      of_device_id to find the SoC specific details according to the string
      passed to mvebu_mbus_init(). The plan is to re-introduce a proper DT
      binding as a followup set of patches.
      
      Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
      Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
      fddddb52
  2. 23 Mar, 2013 8 commits
  3. 22 Mar, 2013 29 commits
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/users/willy/linux-nvme · 5da273fe
      Linus Torvalds authored
      Pull NVMe driver update from Matthew Wilcox:
       "These patches have mostly been baking for a few months; sorry I didn't
        get them in during the merge window.  They're all bug fixes, except
        for the addition of the SMART log and the addition to MAINTAINERS."
      
      * git://git.infradead.org/users/willy/linux-nvme:
        NVMe: Add namespaces with no LBA range feature
        MAINTAINERS: Add entry for the NVMe driver
        NVMe: Initialize iod nents to 0
        NVMe: Define SMART log
        NVMe: Add result to nvme_get_features
        NVMe: Set result from user admin command
        NVMe: End queued bio requests when freeing queue
        NVMe: Free cmdid on nvme_submit_bio error
      5da273fe
    • Linus Torvalds's avatar
      Merge branch 'akpm' (fixes from Andrew) · 14629ed3
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton.
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        mqueue: sys_mq_open: do not call mnt_drop_write() if read-only
        mm/hotplug: only free wait_table if it's allocated by vmalloc
        dma-debug: update DMA debug API to better handle multiple mappings of a buffer
        dma-debug: fix locking bug in check_unmap()
        drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR
        drivers/video/ep93xx-fb.c: include <linux/io.h> for devm_ioremap()
        drivers/rtc/rtc-da9052.c: fix for rtc device registration
        mm: zone_end_pfn is too small
        poweroff: change orderly_poweroff() to use schedule_work()
        mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting
        printk: Provide a wake_up_klogd() off-case
        irq_work.h: fix warning when CONFIG_IRQ_WORK=n
      14629ed3
    • Vladimir Davydov's avatar
      mqueue: sys_mq_open: do not call mnt_drop_write() if read-only · 38d78e58
      Vladimir Davydov authored
      mnt_drop_write() must be called only if mnt_want_write() succeeded,
      otherwise the mnt_writers counter will diverge.
      
      mnt_writers counters are used to check if remounting FS as read-only is
      OK, so after an extra mnt_drop_write() call, it would be impossible to
      remount mqueue FS as read-only.  Besides, on umount a warning would be
      printed like this one:
      
        =====================================
        [ BUG: bad unlock balance detected! ]
        3.9.0-rc3 #5
      
       Not tainted
        -------------------------------------
        a.out/12486 is trying to release lock (sb_writers) at:
        mnt_drop_write+0x1f/0x30
        but there are no more locks to release!
      
      Signed-off-by: default avatarVladimir Davydov <vdavydov@parallels.com>
      Cc: Doug Ledford <dledford@redhat.com>
      Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      38d78e58
    • Jianguo Wu's avatar
      mm/hotplug: only free wait_table if it's allocated by vmalloc · ca4b3f30
      Jianguo Wu authored
      
      
      zone->wait_table may be allocated from bootmem, it can not be freed.
      
      Signed-off-by: default avatarJianguo Wu <wujianguo@huawei.com>
      Reviewed-by: default avatarTang Chen <tangchen@cn.fujitsu.com>
      Cc: Tang Chen <tangchen@cn.fujitsu.com>
      Cc: Jiang Liu <jiang.liu@huawei.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ca4b3f30
    • Alexander Duyck's avatar
      dma-debug: update DMA debug API to better handle multiple mappings of a buffer · 96e7d7a1
      Alexander Duyck authored
      
      
      There were reports of the igb driver unmapping buffers without calling
      dma_mapping_error.  On closer inspection issues were found in the DMA
      debug API and how it handled multiple mappings of the same buffer.
      
      The issue I found is the fact that the debug_dma_mapping_error would
      only set the map_err_type to MAP_ERR_CHECKED in the case that the was
      only one match for device and device address.  However in the case of
      non-IOMMU, multiple addresses existed and as a result it was not setting
      this field once a second mapping was instantiated.  I have resolved this
      by changing the search so that it instead will now set MAP_ERR_CHECKED
      on the first buffer that matches the device and DMA address that is
      currently in the state MAP_ERR_NOT_CHECKED.
      
      A secondary side effect of this patch is that in the case of multiple
      buffers using the same address only the last mapping will have a valid
      map_err_type.  The previous mappings will all end up with map_err_type
      set to MAP_ERR_CHECKED because of the dma_mapping_error call in
      debug_dma_map_page.  However this behavior may be preferable as it means
      you will likely only see one real error per multi-mapped buffer, versus
      the current behavior of multiple false errors mer multi-mapped buffer.
      
      Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Reviewed-by: default avatarShuah Khan <shuah.khan@hp.com>
      Tested-by: default avatarShuah Khan <shuah.khan@hp.com>
      Cc: Jakub Kicinski <kubakici@wp.pl>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      96e7d7a1
    • Alexander Duyck's avatar
      dma-debug: fix locking bug in check_unmap() · 8d640a51
      Alexander Duyck authored
      
      
      In check_unmap() it is possible to get into a dead-locked state if
      dma_mapping_error is called.  The problem is that the bucket is locked in
      check_unmap, and locked again by debug_dma_mapping_error which is called
      by dma_mapping_error.  To resolve that we must release the lock on the
      bucket before making the call to dma_mapping_error.
      
      [akpm@linux-foundation.org: restore 80-col trickery to be consistent with the rest of the file]
      Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Reviewed-by: default avatarShuah Khan <shuah.khan@hp.com>
      Tested-by: default avatarShuah Khan <shuah.khan@hp.com>
      Cc: Jakub Kicinski <kubakici@wp.pl>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8d640a51
    • Nicolas Ferre's avatar
      drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR · 0ef1594c
      Nicolas Ferre authored
      On some revisions of AT91 SoCs, the RTC IMR register is not working.
      Instead of elaborating a workaround for that specific SoC or IP version,
      we simply use a software variable to store the Interrupt Mask Register
      and modify it for each enabling/disabling of an interrupt.  The overhead
      of this is negligible anyway.
      
      The interrupt mask register (IMR) for the RTC is broken on the AT91SAM9x5
      sub-family of SoCs (good overview of the members here:
      http://www.eewiki.net/display/linuxonarm/AT91SAM9x5
      
       ).  The "user visible
      effect" is the RTC doesn't work.
      
      That sub-family is less than two years old and only has devicetree (DT)
      support and came online circa lk 3.7 .  The dust is yet to settle on the
      DT stuff at least for AT91 SoCs (translation: lots of stuff is still
      broken, so much that it is hard to know where to start).
      
      The fix in the patch is pretty simple: just shadow the silicon IMR
      register with a variable in the driver.  Some older SoCs (pre-DT) use the
      the rtc-at91rm9200 driver (e.g.  obviously the AT91RM9200) and they should
      not be impacted by the change.  There shouldn't be a large volume of
      interrupts associated with a RTC.
      
      Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
      Reported-by: default avatarDouglas Gilbert <dgilbert@interlog.com>
      Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
      Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0ef1594c
    • H Hartley Sweeten's avatar
      drivers/video/ep93xx-fb.c: include <linux/io.h> for devm_ioremap() · e66b0587
      H Hartley Sweeten authored
      Commit be867814
      
       ("drivers/video/ep93xx-fb.c: use devm_ functions")
      introduced a build error:
      
        drivers/video/ep93xx-fb.c: In function 'ep93xxfb_probe':
        drivers/video/ep93xx-fb.c:532: error: implicit declaration of function 'devm_ioremap'
        drivers/video/ep93xx-fb.c:533: warning: assignment makes pointer from integer without a cast
      
      Include <linux/io.h> to pickup the declaration of 'devm_ioremap'.
      
      Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
      Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
      Acked-by: default avatarRyan Mallon <rmallon@gmail.com>
      Cc: Damien Cassou <damien.cassou@lifl.fr>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e66b0587
    • Ashish Jangam's avatar
      drivers/rtc/rtc-da9052.c: fix for rtc device registration · 925e8ea6
      Ashish Jangam authored
      
      
      Add support for the virtual irq since now MFD only handles virtual irq
      Without this patch rtc device will fail in registration.
      
      (akpm: Ashish has a different version whcih will be needed for 3.8.x and
      earlier kernels)
      
      Signed-off-by: default avatarAshish <ashish.jangam@kpitcummins.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      925e8ea6
    • Russ Anderson's avatar
      mm: zone_end_pfn is too small · f9228b20
      Russ Anderson authored
      Booting with 32 TBytes memory hits BUG at mm/page_alloc.c:552! (output
      below).
      
      The key hint is "page 4294967296 outside zone".
      4294967296 = 0x100000000 (bit 32 is set).
      
      The problem is in include/linux/mmzone.h:
      
        530 static inline unsigned zone_end_pfn(const struct zone *zone)
        531 {
        532         return zone->zone_start_pfn + zone->spanned_pages;
        533 }
      
      zone_end_pfn is "unsigned" (32 bits).  Changing it to "unsigned long"
      (64 bits) fixes the problem.
      
      zone_end_pfn() was added recently in commit 108bcc96 ("mm: add & use
      zone_end_pfn() and zone_spans_pfn()")
      
      Output from the failure.
      
        No AGP bridge found
        page 4294967296 outside zone [ 4294967296 - 4327469056 ]
        ------------[ cut here ]------------
        kernel BUG at mm/page_alloc.c:552!
        invalid opcode: 0000 [#1
      
      ] SMP
        Modules linked in:
        CPU 0
        Pid: 0, comm: swapper Not tainted 3.9.0-rc2.dtp+ #10
        RIP: free_one_page+0x382/0x430
        Process swapper (pid: 0, threadinfo ffffffff81942000, task ffffffff81955420)
        Call Trace:
          __free_pages_ok+0x96/0xb0
          __free_pages+0x25/0x50
          __free_pages_bootmem+0x8a/0x8c
          __free_memory_core+0xea/0x131
          free_low_memory_core_early+0x4a/0x98
          free_all_bootmem+0x45/0x47
          mem_init+0x7b/0x14c
          start_kernel+0x216/0x433
          x86_64_start_reservations+0x2a/0x2c
          x86_64_start_kernel+0x144/0x153
        Code: 89 f1 ba 01 00 00 00 31 f6 d3 e2 4c 89 ef e8 66 a4 01 00 e9 2c fe ff ff 0f 0b eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 <0f> 0b eb fe 0f 0b 0f 1f 84 00 00 00 00 00 eb f6 0f 0b eb fe 49
      
      Signed-off-by: default avatarRuss Anderson <rja@sgi.com>
      Reported-by: default avatarGeorge Beshers <gbeshers@sgi.com>
      Acked-by: default avatarHedi Berriche <hedi@sgi.com>
      Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
      Cc: Michal Hocko <mhocko@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f9228b20
    • Oleg Nesterov's avatar
      poweroff: change orderly_poweroff() to use schedule_work() · 2ca067ef
      Oleg Nesterov authored
      David said:
      
          Commit 6c0c0d4d
      
       ("poweroff: fix bug in orderly_poweroff()")
          apparently fixes one bug in orderly_poweroff(), but introduces
          another.  The comments on orderly_poweroff() claim it can be called
          from any context - and indeed we call it from interrupt context in
          arch/powerpc/platforms/pseries/ras.c for example.  But since that
          commit this is no longer safe, since call_usermodehelper_fns() is not
          safe in interrupt context without the UMH_NO_WAIT option.
      
      orderly_poweroff() can be used from any context but UMH_WAIT_EXEC is
      sleepable.  Move the "force" logic into __orderly_poweroff() and change
      orderly_poweroff() to use the global poweroff_work which simply calls
      __orderly_poweroff().
      
      While at it, remove the unneeded "int argc" and change argv_split() to
      use GFP_KERNEL.
      
      We use the global "bool poweroff_force" to pass the argument, this can
      obviously affect the previous request if it is pending/running.  So we
      only allow the "false => true" transition assuming that the pending
      "true" should succeed anyway.  If schedule_work() fails after that we
      know that work->func() was not called yet, it must see the new value.
      
      This means that orderly_poweroff() becomes async even if we do not run
      the command and always succeeds, schedule_work() can only fail if the
      work is already pending.  We can export __orderly_poweroff() and change
      the non-atomic callers which want the old semantics.
      
      Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
      Reported-by: Benjamin Herrenschmidt's avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Reported-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
      Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
      Cc: Feng Hong <hongfeng@marvell.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Serge Hallyn <serge.hallyn@canonical.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2ca067ef
    • Wanpeng Li's avatar
      mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting · d0028588
      Wanpeng Li authored
      hugetlb_total_pages is used for overcommit calculations but the current
      implementation considers only the default hugetlb page size (which is
      either the first defined hugepage size or the one specified by
      default_hugepagesz kernel boot parameter).
      
      If the system is configured for more than one hugepage size, which is
      possible since commit a137e1cc
      
       ("hugetlbfs: per mount huge page
      sizes") then the overcommit estimation done by __vm_enough_memory()
      (resp.  shown by meminfo_proc_show) is not precise - there is an
      impression of more available/allowed memory.  This can lead to an
      unexpected ENOMEM/EFAULT resp.  SIGSEGV when memory is accounted.
      
      Testcase:
        boot: hugepagesz=1G hugepages=1
        the default overcommit ratio is 50
        before patch:
      
          egrep 'CommitLimit' /proc/meminfo
          CommitLimit:     55434168 kB
      
        after patch:
      
          egrep 'CommitLimit' /proc/meminfo
          CommitLimit:     54909880 kB
      
      [akpm@linux-foundation.org: coding-style tweak]
      Signed-off-by: default avatarWanpeng Li <liwanp@linux.vnet.ibm.com>
      Acked-by: default avatarMichal Hocko <mhocko@suse.cz>
      Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
      Cc: Hillf Danton <dhillf@gmail.com>
      Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: <stable@vger.kernel.org>		[3.0+]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d0028588
    • Frederic Weisbecker's avatar
      printk: Provide a wake_up_klogd() off-case · dc72c32e
      Frederic Weisbecker authored
      
      
      wake_up_klogd() is useless when CONFIG_PRINTK=n because neither printk()
      nor printk_sched() are in use and there are actually no waiter on
      log_wait waitqueue.  It should be a stub in this case for users like
      bust_spinlocks().
      
      Otherwise this results in this warning when CONFIG_PRINTK=n and
      CONFIG_IRQ_WORK=n:
      
      	kernel/built-in.o In function `wake_up_klogd':
      	(.text.wake_up_klogd+0xb4): undefined reference to `irq_work_queue'
      
      To fix this, provide an off-case for wake_up_klogd() when
      CONFIG_PRINTK=n.
      
      There is much more from console_unlock() and other console related code
      in printk.c that should be moved under CONFIG_PRINTK.  But for now,
      focus on a minimal fix as we passed the merged window already.
      
      [akpm@linux-foundation.org: include printk.h in bust_spinlocks.c]
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Reported-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Cc: James Hogan <james.hogan@imgtec.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Ingo Molnar <mingo@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      dc72c32e
    • James Hogan's avatar
      irq_work.h: fix warning when CONFIG_IRQ_WORK=n · fe8d5261
      James Hogan authored
      A randconfig caught repeated compiler warnings when CONFIG_IRQ_WORK=n
      due to the definition of a non-inline static function in
      <linux/irq_work.h>:
      
        include/linux/irq_work.h +40 : warning: 'irq_work_needs_cpu' defined but not used
      
      Make it inline to supress the warning.  This is caused commit
      00b42959
      
       ("irq_work: Don't stop the tick with pending works") merged
      in v3.9-rc1.
      
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      fe8d5261
    • Takahisa Tanaka's avatar
      watchdog: sp5100_tco: Set the AcpiMmioSel bitmask value to 1 instead of 2 · 81fc933f
      Takahisa Tanaka authored
      The AcpiMmioSel bit is bit 1 in the AcpiMmioEn register, but the current
      sp5100_tco driver is using bit 2.
      
      See 2.3.3 Power Management (PM) Registers page 150 of the
      AMD SB800-Series Southbridges Register Reference Guide [1].
      
              AcpiMmioEn - RW – 8/16/32 bits - [PM_Reg: 24h]
              Field Name        Bits  Default  Description
              AcpiMMioDecodeEn  0     0b       Set to 1 to enable AcpiMMio space.
              AcpiMMIoSel       1     0b       Set AcpiMMio registers to be memory-mapped or IO-mapped space.
                                               0: Memory-mapped space
                                               1: I/O-mapped space
      
      The sp5100_tco driver expects zero as a value of AcpiMmioSel (bit 1).
      
      Fortunately, no problems were caused by this typo, because the default
      value of the undocumented misused bit 2 seems to be zero.
      
      However, the sp5100_tco driver should use the correct bitmask value.
      
      [1] http://support.amd.com/us/Embedded_TechDocs/45482.pdf
      
      
      
      Signed-off-by: default avatarTakahisa Tanaka <mc74hc00@gmail.com>
      Signed-off-by: default avatarPaul Menzel <paulepanter@users.sourceforge.net>
      Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
      Cc: stable <stable@vger.kernel.org>
      81fc933f
    • Takahisa Tanaka's avatar
      watchdog: sp5100_tco: Remove code that may cause a boot failure · 18e43212
      Takahisa Tanaka authored
      A problem was found on PC's with the SB700 chipset: The PC fails to
      load BIOS after running the 3.8.x kernel until the power is completely
      cut off. It occurs in all 3.8.x versions and the mainline version as of
      2/4. The issue does not occur with the 3.7.x builds.
      
      There are two methods for accessing the watchdog registers.
      
       1. Re-programming a resource address obtained by allocate_resource()
      to chipset.
       2. Use the direct memory-mapped IO access.
      
      The method 1 can be used by all the chipsets (SP5100, SB7x0, SB8x0 or
      later). However, experience shows that only PC with the SB8x0 (or
      later) chipsets can use the method 2.
      
      This patch removes the method 1, because the critical problem was found.
      That's why the watchdog timer was able to be used on SP5100 and SB7x0
      chipsets until now.
      
      Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116835
      Link: https://lkml.org/lkml/2013/2/14/271
      
      
      
      Signed-off-by: default avatarTakahisa Tanaka <mc74hc00@gmail.com>
      Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
      Cc: stable <stable@vger.kernel.org>
      18e43212
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/virt/kvm/kvm · b9cb3bf4
      Linus Torvalds authored
      Pull KVM fix from Marcelo Tosatti:
       "Fix compilation on PPC with !CONFIG_KVM"
      
      * git://git.kernel.org/pub/scm/virt/kvm/kvm:
        Revert "KVM: allow host header to be included even for !CONFIG_KVM"
      b9cb3bf4
    • Linus Torvalds's avatar
      Merge tag 'usb-3.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 8f46c507
      Linus Torvalds authored
      Pull USB fixes from Greg Kroah-Hartman:
       "Here are a number of USB fixes that resolve issues that have been
        reported against 3.9-rc3."
      
      * tag 'usb-3.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (37 commits)
        USB: ti_usb_3410_5052: fix use-after-free in TIOCMIWAIT
        USB: ssu100: fix use-after-free in TIOCMIWAIT
        USB: spcp8x5: fix use-after-free in TIOCMIWAIT
        USB: quatech2: fix use-after-free in TIOCMIWAIT
        USB: pl2303: fix use-after-free in TIOCMIWAIT
        USB: oti6858: fix use-after-free in TIOCMIWAIT
        USB: mos7840: fix use-after-free in TIOCMIWAIT
        USB: mos7840: fix broken TIOCMIWAIT
        USB: mct_u232: fix use-after-free in TIOCMIWAIT
        USB: io_ti: fix use-after-free in TIOCMIWAIT
        USB: io_edgeport: fix use-after-free in TIOCMIWAIT
        USB: ftdi_sio: fix use-after-free in TIOCMIWAIT
        USB: f81232: fix use-after-free in TIOCMIWAIT
        USB: cypress_m8: fix use-after-free in TIOCMIWAIT
        USB: ch341: fix use-after-free in TIOCMIWAIT
        USB: ark3116: fix use-after-free in TIOCMIWAIT
        USB: serial: add modem-status-change wait queue
        USB: serial: fix interface refcounting
        USB: io_ti: fix get_icount for two port adapters
        USB: garmin_gps: fix memory leak on disconnect
        ...
      8f46c507
    • Linus Torvalds's avatar
      Merge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 70dc52fa
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Mostly HD-audio and USB-audio regression fixes:
         - Oops fix at unloading of snd-hda-codec-conexant module
         - A few trivial regression fixes for Cirrus and Conexant HD-audio
           codecs
         - Relax the USB-audio descriptor parse errors as non-fatal
         - Fix locking of HD-audio CA0132 DSP loader
         - Fix the generic HD-audio parser for VIA codecs"
      
      * tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda - Fix DAC assignment for independent HP
        ALSA: hda - Fix abuse of snd_hda_lock_devices() for DSP loader
        ALSA: hda - Fix typo in checking IEC958 emphasis bit
        ALSA: snd-usb: mixer: ignore -EINVAL in snd_usb_mixer_controls()
        ALSA: snd-usb: mixer: propagate errors up the call chain
        ALSA: usb: Parse UAC2 extension unit like for UAC1
        ALSA: hda - Fix yet missing GPIO/EAPD setup in cirrus driver
        ALSA: hda/cirrus - Fix the digital beep registration
        ALSA: hda - Fix missing beep detach in patch_conexant.c
        ALSA: documentation: Fix typo in Documentation/sound
      70dc52fa
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · 1e0695cb
      Linus Torvalds authored
      Pull EDAC fixes from Borislav Petkov:
       "A fix from Mauro to correct csrow size accounting in sysfs and a
        sparse fix from Stephen Hemminger."
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
        EDAC: Merge mci.mem_is_per_rank with mci.csbased
        amd64_edac: Correct DIMM sizes
        EDAC: Make sysfs functions static
      1e0695cb
    • Keith Busch's avatar
      NVMe: Add namespaces with no LBA range feature · 12209036
      Keith Busch authored
      
      
      The LBA Range Type feature is optional in the NVMe specification,
      so we should continue with adding namespaces for controllers that do
      not implement this feature.
      
      Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
      Signed-off-by: default avatarMatthew Wilcox <matthew.r.wilcox@intel.com>
      12209036
    • Linus Torvalds's avatar
      vfs,proc: guarantee unique inodes in /proc · 51f0885e
      Linus Torvalds authored
      
      
      Dave Jones found another /proc issue with his Trinity tool: thanks to
      the namespace model, we can have multiple /proc dentries that point to
      the same inode, aliasing directories in /proc/<pid>/net/ for example.
      
      This ends up being a total disaster, because it acts like hardlinked
      directories, and causes locking problems.  We rely on the topological
      sort of the inodes pointed to by dentries, and if we have aliased
      directories, that odering becomes unreliable.
      
      In short: don't do this.  Multiple dentries with the same (directory)
      inode is just a bad idea, and the namespace code should never have
      exposed things this way.  But we're kind of stuck with it.
      
      This solves things by just always allocating a new inode during /proc
      dentry lookup, instead of using "iget_locked()" to look up existing
      inodes by superblock and number.  That actually simplies the code a bit,
      at the cost of potentially doing more inode [de]allocations.
      
      That said, the inode lookup wasn't free either (and did a lot of locking
      of inodes), so it is probably not that noticeable.  We could easily keep
      the old lookup model for non-directory entries, but rather than try to
      be excessively clever this just implements the minimal and simplest
      workaround for the problem.
      
      Reported-and-tested-by: default avatarDave Jones <davej@redhat.com>
      Analyzed-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      51f0885e
    • Marcelo Tosatti's avatar
      Revert "KVM: allow host header to be included even for !CONFIG_KVM" · 09a6e1f4
      Marcelo Tosatti authored
      This reverts commit f445f11e
      
       as
      it breaks PPC with CONFIG_KVM=n.
      
      Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
      09a6e1f4
    • Ludovic Desroches's avatar
      MAINTAINERS: add maintainer entry for atmel i2c driver · 888f2804
      Ludovic Desroches authored
      
      
      Create an entry for atmel i2c driver: i2c-at91.c
      
      Signed-off-by: default avatarLudovic Desroches <ludovic.desroches@atmel.com>
      Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      888f2804
    • Guenter Roeck's avatar
      i2c: Fix my e-mail address in drivers and documentation · b104153e
      Guenter Roeck authored
      
      
      My old e-mail address is no longer working.
      
      Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      b104153e
    • Seth Heasley's avatar
      i2c: iSMT: add Intel Avoton DeviceIDs · 488b9269
      Seth Heasley authored
      
      
      This patch adds the iSMT SMBus Controller DeviceIDs for the Intel Avoton SOC.
      
      Signed-off-by: default avatarSeth Heasley <seth.heasley@intel.com>
      Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      488b9269
    • Laxman Dewangan's avatar
      i2c: tegra: check the clk_prepare_enable() return value · 132c803f
      Laxman Dewangan authored
      
      
      NVIDIA's Tegra SoC allows read/write of controller register only
      if controller clock is enabled. System hangs if read/write happens
      to registers without enabling clock.
      
      clk_prepare_enable() can be fail due to unknown reason and hence
      adding check for return value of this function. If this function
      success then only access register otherwise return to caller with
      error.
      
      Signed-off-by: default avatarLaxman Dewangan <ldewangan@nvidia.com>
      Reviewed-by: default avatarStephen Warren <swarren@nvidia.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      Cc: stable@kernel.org
      132c803f
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 9217cbb8
      Linus Torvalds authored
      Pull CIFS fixes from Steve French:
       "Three small CIFS Fixes (the most important of the three fixes a recent
        problem authenticating to Windows 8 using cifs rather than SMB2)"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: ignore everything in SPNEGO blob after mechTypes
        cifs: delay super block destruction until all cifsFileInfo objects are gone
        cifs: map NT_STATUS_SHARING_VIOLATION to EBUSY instead of ETXTBSY
      9217cbb8
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linue' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · d3c92626
      Linus Torvalds authored
      Pull ext4 fixes from Ted Ts'o:
       "Fix a number of regression and other bugs in ext4, most of which were
        relatively obscure cornercases or races that were found using
        regression tests."
      
      * tag 'ext4_for_linue' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
        ext4: fix data=journal fast mount/umount hang
        ext4: fix ext4_evict_inode() racing against workqueue processing code
        ext4: fix memory leakage in mext_check_coverage
        ext4: use s_extent_max_zeroout_kb value as number of kb
        ext4: use atomic64_t for the per-flexbg free_clusters count
        jbd2: fix use after free in jbd2_journal_dirty_metadata()
        ext4: reserve metadata block for every delayed write
        ext4: update reserved space after the 'correction'
        ext4: do not use yield()
        ext4: remove unused variable in ext4_free_blocks()
        ext4: fix WARN_ON from ext4_releasepage()
        ext4: fix the wrong number of the allocated blocks in ext4_split_extent()
        ext4: update extent status tree after an extent is zeroed out
        ext4: fix wrong m_len value after unwritten extent conversion
        ext4: add self-testing infrastructure to do a sanity check
        ext4: avoid a potential overflow in ext4_es_can_be_merged()
        ext4: invalidate extent status tree during extent migration
        ext4: remove unnecessary wait for extent conversion in ext4_fallocate()
        ext4: add warning to ext4_convert_unwritten_extents_endio
        ext4: disable merging of uninitialized extents
        ...
      d3c92626
  4. 21 Mar, 2013 2 commits