debug_dma_assert_idle - snd_hda_intel - cpu touching an active dma mapped cacheline

[poma]

$ file *
linux-3.15.0-0.rc3.git1.10.fc21.i686: directory
linux-3.15.0-0.rc3.git2.1.fc21.i686:  directory
linux-3.15.0-0.rc3.git3.1.fc21.i686:  directory
$
$ grep -R AZX_DCAPS_CORBRP_SELF_CLEAR 
linux-3.15.0-0.rc3.git3.1.fc21.i686/sound/pci/hda/hda_intel.c:	 AZX_DCAPS_CORBRP_SELF_CLEAR)
linux-3.15.0-0.rc3.git3.1.fc21.i686/sound/pci/hda/hda_controller.c:	if (!(chip->driver_caps & AZX_DCAPS_CORBRP_SELF_CLEAR)) {
linux-3.15.0-0.rc3.git3.1.fc21.i686/sound/pci/hda/hda_priv.h:#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28)	/* CORBRP clears itself after reset */
$ 
$ uname -r
3.15.0-0.rc3.git3.1.fc21.i686  PASSED

Referent commit
ALSA: hda - Suppress CORBRP clear on Nvidia controller chips
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/sound/pci/hda?id=6ba736d

Eye Of The Tiger, Takashi!


poma