summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/wm8804-spi.c
diff options
context:
space:
mode:
authorGary R Hook <gary.hook@amd.com>2017-01-27 15:28:45 -0600
committerHerbert Xu <herbert@gondor.apana.org.au>2017-02-03 17:45:45 +0800
commit500c0106e638e08c2c661c305ed57d6b67e10908 (patch)
tree8fcb8de6b8ee55537f6866bd2bf3ba128f22a803 /sound/soc/codecs/wm8804-spi.c
parentf5f7bebc91ab378dea5aad5277c4d283e46472d9 (diff)
crypto: ccp - Fix DMA operations when IOMMU is enabled
An I/O page fault occurs when the IOMMU is enabled on a system that supports the v5 CCP. DMA operations use a Request ID value that does not match what is expected by the IOMMU, resulting in the I/O page fault. Setting the Request ID value to 0 corrects this issue. Cc: <stable@vger.kernel.org> Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'sound/soc/codecs/wm8804-spi.c')
0 files changed, 0 insertions, 0 deletions
NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/pmu-events/jevents.c')