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  1. 23 11月, 2010 4 次提交
  3. 22 11月, 2010 6 次提交
  5. 11 11月, 2010 3 次提交
    • J
      ALSA: sound/pci/ctxfi/ctpcm.c: Remove potential for use after free · fa2b30af
      由 Julia Lawall 提交于 
      In each function, the value apcm is stored in the private_data field of
runtime.  At the same time the function ct_atc_pcm_free_substream is stored
in the private_free field of the same structure.  ct_atc_pcm_free_substream
dereferences and ultimately frees the value in the private_data field.  But
each function can exit in an error case with apcm having been freed, in
which case a subsequent call to the private_free function would perform a
dereference after free.  On the other hand, if the private_free field is
not initialized, it is NULL, and not invoked (see snd_pcm_detach_substream
in sound/core/pcm.c).  To avoid the introduction of a dangling pointer, the
initializations of the private_data and private_free fields are moved to
the end of the function, past any possible free of apcm.  This is safe
because the previous calls to snd_pcm_hw_constraint_integer and
snd_pcm_hw_constraint_minmax, which take runtime as an argument, do not
refer to either of these fields.

In each function, there is one error case where apcm needs to be freed, and
a call to kfree is added.

The sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e,e1,e2,e3;
identifier f,free1,free2;
expression a;
@@

*e->f = a
... when != e->f = e1
    when any
if (...) {
  ... when != free1(...,e,...)
      when != e->f = e2
* kfree(a)
  ... when != free2(...,e,...)
      when != e->f = e3
}
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      fa2b30af
    • F
      ALSA: sound/mixart: avoid redefining {readl,write}_{le,be} accessors · e9161512
      由 Florian Fainelli 提交于 
      If the platform already provides a definition for these accessors
do not redefine them. The warning was caught on MIPS.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e9161512
    • D
      ALSA: HDA: Enable digital mic on IDT 92HD87B · 89feca1a
      由 David Henningsson 提交于 
      BugLink: http://launchpad.net/bugs/673075

According to the datasheet of 92HD87B, there is a digital mic
at nid 0x11, so enable it in order to be able to use the mic.

Cc: stable@kernel.org
Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      89feca1a
  7. 03 11月, 2010 1 次提交
  9. 02 11月, 2010 1 次提交
  11. 01 11月, 2010 2 次提交
  13. 26 10月, 2010 1 次提交
  15. 25 10月, 2010 1 次提交
  17. 23 10月, 2010 6 次提交
  19. 22 10月, 2010 2 次提交
  21. 21 10月, 2010 5 次提交
  23. 19 10月, 2010 1 次提交
  25. 18 10月, 2010 1 次提交
  27. 17 10月, 2010 5 次提交
  29. 14 10月, 2010 1 次提交