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(parent: f5f7beb) | patch
crypto: ccp - Fix DMA operations when IOMMU is enabled
authorGary R Hook <gary.hook@amd.com>
Fri, 27 Jan 2017 21:28:45 +0000 (15:28 -0600)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 3 Feb 2017 09:45:45 +0000 (17:45 +0800)
commit500c0106e638e08c2c661c305ed57d6b67e10908
tree8fcb8de6b8ee55537f6866bd2bf3ba128f22a803tree | snapshot
parentf5f7bebc91ab378dea5aad5277c4d283e46472d9commit | 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>
drivers/crypto/ccp/ccp-dev-v5.c diff | blob | history
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