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| author | Bjorn Helgaas <bhelgaas@google.com> | 2017-03-21 13:01:30 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-06-28 15:14:52 -0500 |
| commit | 675734baa361cf044033bb60594dea33d8d8da36 (patch) | |
| tree | 9431ba97ee6011b7b8d17e08db60fcdfdd049fb0 /mm/mremap.c | |
| parent | 56c1af4606f04048e3ae9ab2027a708b9684ff37 (diff) | |
| download | linux-675734baa361cf044033bb60594dea33d8d8da36.tar.bz2 | |
PCI: Enable ECRC only if device supports it
John reported that an Intel QuickAssist crypto accelerator didn't work in a
Dell PowerEdge R730. The problem seems to be that we enabled ECRC when the
device doesn't support it:
85:00.0 Co-processor [0b40]: Intel Corporation DH895XCC Series QAT [8086:0435]
Capabilities: [100 v1] Advanced Error Reporting
AERCap: First Error Pointer: 00, GenCap- CGenEn+ ChkCap- ChkEn+
1302fcf0d03e ("PCI: Configure *all* devices, not just hot-added ones")
exposed the problem because it applies settings from the _HPX method to all
devices, not just hot-added ones. The R730 supplies an _HPX method that
allows the kernel to enable ECRC.
Only enable ECRC if the device advertises support for it.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1571798
Fixes: 1302fcf0d03e ("PCI: Configure *all* devices, not just hot-added ones")
Reported-by: John Mazzie <john_mazzie@dell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions