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  1. 21 10月, 2012 1 次提交
    • J
      ALSA: sound/isa/opti9xx/miro.c: eliminate possible double free · edb66893
      由 Julia Lawall 提交于 
      snd_miro_probe is a static function that is only called twice in the file
that defines it.  At each call site, its argument is freed using
snd_card_free.  Thus, there is no need for snd_miro_probe to call
snd_card_free on its argument on any of its error exit paths.

Because snd_card_free both reads the fields of its argument and kfrees its
argments, the results of the second snd_card_free should be unpredictable.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier f,free,a;
parameter list[n] ps;
type T;
expression e;
@@

f(ps,T a,...) {
  ... when any
      when != a = e
  if(...) { ... free(a); ... return ...; }
  ... when any
}

@@
identifier r.f,r.free;
expression x,a;
expression list[r.n] xs;
@@

* x = f(xs,a,...);
  if (...) { ... free(a); ... return ...; }
// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      edb66893
  3. 03 8月, 2012 1 次提交
  5. 19 12月, 2011 1 次提交
  7. 01 11月, 2011 1 次提交
  9. 14 9月, 2011 1 次提交
    • C
      ALSA: mpu401: clean up interrupt specification · dba8b469
      由 Clemens Ladisch 提交于 
      The semantics of snd_mpu401_uart_new()'s interrupt parameters are
somewhat counterintuitive:  To prevent the function from allocating its
own interrupt, either the irq number must be invalid, or the irq_flags
parameter must be zero.  At the same time, the irq parameter being
invalid specifies that the mpu401 code has to work without an interrupt
allocated by the caller.  This implies that, if there is an interrupt
and it is allocated by the caller, the irq parameter must be set to
a valid-looking number which then isn't actually used.

With the removal of IRQF_DISABLED, zero becomes a valid irq_flags value,
which forces us to handle the parameters differently.

This patch introduces a new flag MPU401_INFO_IRQ_HOOK for when the
device interrupt is handled by the caller, and makes the allocation of
the interrupt to depend only on the irq parameter.  As suggested by
Takashi, the irq_flags parameter was dropped because, when used, it had
the constant value IRQF_DISABLED.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      dba8b469
  11. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      由 Tejun Heo 提交于 
      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: NTejun Heo <tj@kernel.org>
Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  13. 04 3月, 2010 1 次提交
  15. 04 12月, 2009 1 次提交
  17. 30 11月, 2009 2 次提交
  19. 27 11月, 2009 1 次提交
  21. 23 11月, 2009 2 次提交
  23. 22 11月, 2009 1 次提交
  25. 18 11月, 2009 2 次提交
  27. 12 1月, 2009 1 次提交
  29. 13 8月, 2008 1 次提交
  31. 06 8月, 2008 2 次提交
  33. 01 2月, 2008 3 次提交
    • R
      [ALSA] fix opti9xx/miro section mismatch · 9478bc3b
      由 Randy Dunlap 提交于 
      snd_opti93x_mixer() is only called by __devinit snd_opti93x_probe(),
so the former can also be __devinit.
snd_miro_mixer() is only called by __devinit snd_miro_probe(),
so the former can also be __devinit.
sound/isa/opti9xx/opti92x-ad1848.c:
WARNING: vmlinux.o(.text+0xf91cd7): Section mismatch: reference to .init.data:snd_opti93x_controls (between 'snd_opti93x_mixer' and 'snd_card_opti9xx_free')
WARNING: vmlinux.o(.text+0xf91d66): Section mismatch: reference to .init.data:snd_miro_controls (between 'snd_opti93x_mixer' and 'snd_card_opti9xx_free')
opti9xx/miro.c:
WARNING: vmlinux.o(.text+0xf926c2): Section mismatch: reference to .init.data:snd_miro_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf926e5): Section mismatch: reference to .init.data:snd_miro_eq_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf926f9): Section mismatch: reference to .init.data:snd_miro_line_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92716): Section mismatch: reference to .init.data:snd_miro_amp_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf9273e): Section mismatch: reference to .init.data:snd_miro_preamp_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92764): Section mismatch: reference to .init.data:snd_miro_capture_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92783): Section mismatch: reference to .init.data:snd_miro_radio_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf9279a): Section mismatch: reference to .init.data:snd_miro_eq_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf927b9): Section mismatch: reference to .init.data:snd_miro_radio_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      9478bc3b
    • T
      [ALSA] Remove sound/driver.h · 9004acc7
      由 Takashi Iwai 提交于 
      This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      9004acc7
    • T
      [ALSA] Check value range in ctl callbacks · 3b892467
      由 Takashi Iwai 提交于 
      Check the value ranges in ctl put callbacks properly (in the rest drivers).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      3b892467
  35. 16 10月, 2007 1 次提交
  37. 11 5月, 2007 2 次提交
  39. 03 7月, 2006 1 次提交
  41. 23 6月, 2006 1 次提交
  43. 28 4月, 2006 1 次提交
  45. 12 4月, 2006 1 次提交
  47. 31 3月, 2006 2 次提交