1. 31 May, 2010 3 commits
    • Daniel Mack's avatar
      ALSA: usb-audio: parse clock topology of UAC2 devices · 79f920fb
      Daniel Mack authored
      
      
      Audio devices which comply to the UAC2 standard can export complex clock
      topologies in its descriptors and set up links between them.
      
      The entities that are defined are
      
       - clock sources, which define the end-leafs.
       - clock selectors, which act as switch to select one out of many
         possible clocks sources.
       - clock multipliers, which have an input clock source, and act as clock
         source again. They can be used to derive one clock from another.
      
      All sample rate changes, clock validity queries and the like must go to
      clock source elements, while clock selectors and multipliers can be used
      as terminal clock source.
      
      The following patch adds a parser for these elements and functions to
      iterate over the tree and find the leaf nodes (clock sources).
      
      The samplerate set functions were moved to the new clock.c file.
      Signed-off-by: default avatarDaniel Mack <daniel@caiaq.de>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      79f920fb
    • Daniel Mack's avatar
      ALSA: usb-audio: support partially write-protected UAC2 controls · a6a33259
      Daniel Mack authored
      
      
      So far, UAC2 controls are marked read-only if any of the channels are
      marked read-only in the descriptors. Change this behaviour and
      
       - mark them writeable unless all channels are read-only
       - store the read-only mask in usb_mixer_elem_info and
       - check the mask again in set_cur_mix_value(), and bail out for
         write-protected channels.
      Signed-off-by: default avatarDaniel Mack <daniel@caiaq.de>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      a6a33259
    • Daniel Mack's avatar
      ALSA: usb-audio: UAC2: clean up parsing of bmaControls · dcbe7bcf
      Daniel Mack authored
      
      
      Introduce two new static inline functions for a more readable parsing
      of UAC2 bmaControls.
      Signed-off-by: default avatarDaniel Mack <daniel@caiaq.de>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      dcbe7bcf
  2. 29 May, 2010 4 commits
  3. 28 May, 2010 1 commit
  4. 27 May, 2010 4 commits
  5. 25 May, 2010 1 commit
  6. 21 May, 2010 2 commits
  7. 20 May, 2010 1 commit
  8. 11 May, 2010 1 commit
  9. 08 May, 2010 1 commit
  10. 16 Apr, 2010 1 commit
  11. 10 Apr, 2010 1 commit
    • Takashi Iwai's avatar
      ALSA: usb - Fix Oops after usb-midi disconnection · 29aac005
      Takashi Iwai authored
      
      
      usb-midi causes sometimes Oops at snd_usbmidi_output_drain() after
      disconnection.  This is due to the access to the endpoints which have
      been already released at disconnection while the files are still alive.
      
      This patch fixes the problem by checking disconnection state at
      snd_usbmidi_output_drain() and by releasing urbs but keeping the
      endpoint instances until really all freed.
      Tested-by: default avatarTvrtko Ursulin <tvrtko@ursulin.net>
      Cc: <stable@kernel.org>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      29aac005
  12. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  13. 29 Mar, 2010 3 commits
  14. 25 Mar, 2010 1 commit
  15. 23 Mar, 2010 1 commit
  16. 22 Mar, 2010 2 commits
  17. 12 Mar, 2010 6 commits
  18. 05 Mar, 2010 6 commits