1. 07 Jul, 2015 2 commits
    • Krzysztof Kozlowski's avatar
      dmaengine: pl330: Really fix choppy sound because of wrong residue calculation · 5dd90e5b
      Krzysztof Kozlowski authored
      When pl330 driver was used during sound playback, after some time or
      after a number of plays the sound became choppy or totally noisy. For
      example on Odroid XU3 board the first four executions of aplay with
      small WAVE worked fine, but fifth was unrecognizable with errors:
      	$ aplay /usr/share/sounds/alsa/Front_Right.wava
      	underrun!!! (at least 0.095 ms long)
      
      Issue was caused by wrong residue reported by pl330 driver to
      pcm_dmaengine for its cyclic dma transfers.
      
      The pl330_tx_status(), residue reporting function, used a "last" flag in
      a descriptor to indicate that there is no more data to send.
      
      The pl330_tx_submit() iterated over descriptors trying to remove this
      flag from them and then mark last descriptor as "last".  However when
      iterating it actually removed the flag not from descriptors but always
      from last of it (and then reset it). Thus effectively once some
      descriptor was marked as last, then it stayed like this forever causing
      residue to be reported too low.
      Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
      Fixes: aee4d1fa ("dmaengine: pl330: improve pl330_tx_status() function")
      Cc: <stable@vger.kernel.org>
      Reported-by: gabriel@unseen.is
      Suggested-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
      Tested-by: default avatarLars-Peter Clausen <lars@metafoo.de>
      Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
      5dd90e5b
    • Krzysztof Kozlowski's avatar
      dmaengine: pl330: Fix overflow when reporting residue in memcpy · ae128293
      Krzysztof Kozlowski authored
      During memcpy operations the residue was always set to an u32 overflowed
      value.
      
      In pl330_tx_status() function number of currently transferred bytes was
      subtracted from internal "bytes_requested" field. However this
      "bytes_requested" was not initialized at start to length of memcpy
      buffer so transferred bytes were subtracted from 0 causing overflow.
      Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
      Cc: <stable@vger.kernel.org>
      Fixes: aee4d1fa ("dmaengine: pl330: improve pl330_tx_status() function")
      Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
      ae128293
  2. 05 Jul, 2015 4 commits
    • Linus Torvalds's avatar
      Linux 4.2-rc1 · d770e558
      Linus Torvalds authored
      d770e558
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.2-2' of... · a585d2b7
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull late x86 platform driver updates from Darren Hart:
       "The following came in a bit later and I wanted them to bake in next a
        few more days before submitting, thus the second pull.
      
        A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
        dell-laptop, a couple minor fixes, and some updated documentation in
        the dell-laptop comments.
      
        intel_pmc_ipc:
         - Add Intel Apollo Lake PMC IPC driver
      
        tc1100-wmi:
         - Delete an unnecessary check before the function call "kfree"
      
        dell-laptop:
         - Fix allocating & freeing SMI buffer page
         - Show info about WiGig and UWB in debugfs
         - Update information about wireless control"
      
      * tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
        tc1100-wmi: Delete an unnecessary check before the function call "kfree"
        dell-laptop: Fix allocating & freeing SMI buffer page
        dell-laptop: Show info about WiGig and UWB in debugfs
        dell-laptop: Update information about wireless control
      a585d2b7
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 1dc51b82
      Linus Torvalds authored
      Pull more vfs updates from Al Viro:
       "Assorted VFS fixes and related cleanups (IMO the most interesting in
        that part are f_path-related things and Eric's descriptor-related
        stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
        fs-cache series, DAX patches, Jan's file_remove_suid() work"
      
      [ I'd say this is much more than "fixes and related cleanups".  The
        file_table locking rule change by Eric Dumazet is a rather big and
        fundamental update even if the patch isn't huge.   - Linus ]
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
        9p: cope with bogus responses from server in p9_client_{read,write}
        p9_client_write(): avoid double p9_free_req()
        9p: forgetting to cancel request on interrupted zero-copy RPC
        dax: bdev_direct_access() may sleep
        block: Add support for DAX reads/writes to block devices
        dax: Use copy_from_iter_nocache
        dax: Add block size note to documentation
        fs/file.c: __fget() and dup2() atomicity rules
        fs/file.c: don't acquire files->file_lock in fd_install()
        fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
        vfs: avoid creation of inode number 0 in get_next_ino
        namei: make set_root_rcu() return void
        make simple_positive() public
        ufs: use dir_pages instead of ufs_dir_pages()
        pagemap.h: move dir_pages() over there
        remove the pointless include of lglock.h
        fs: cleanup slight list_entry abuse
        xfs: Correctly lock inode when removing suid and file capabilities
        fs: Call security_ops->inode_killpriv on truncate
        fs: Provide function telling whether file_remove_privs() will do anything
        ...
      1dc51b82
    • Linus Torvalds's avatar
      bluetooth: fix list handling · 9b284cbd
      Linus Torvalds authored
      Commit 835a6a2f ("Bluetooth: Stop sabotaging list poisoning")
      thought that the code was sabotaging the list poisoning when NULL'ing
      out the list pointers and removed it.
      
      But what was going on was that the bluetooth code was using NULL
      pointers for the list as a way to mark it empty, and that commit just
      broke it (and replaced the test with NULL with a "list_empty()" test on
      a uninitialized list instead, breaking things even further).
      
      So fix it all up to use the regular and real list_empty() handling
      (which does not use NULL, but a pointer to itself), also making sure to
      initialize the list properly (the previous NULL case was initialized
      implicitly by the session being allocated with kzalloc())
      
      This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
      An.
      
      [ I would normally expect to get this through the bt tree, but I'm going
        to release -rc1, so I'm just committing this directly   - Linus ]
      Reported-and-tested-by: default avatarJörg Otte <jrg.otte@gmail.com>
      Cc: Alexey Dobriyan <adobriyan@gmail.com>
      Original-by: default avatarTedd Ho-Jeong An <tedd.an@intel.com>
      Original-by: Marcel Holtmann <marcel@holtmann.org>:
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9b284cbd
  3. 04 Jul, 2015 34 commits