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| author | Chris Wright <chrisw@sous-sol.org> | 2011-07-13 10:14:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-04 21:58:38 -0700 |
| commit | f3783ea4c293f276d79166c92bfcc4592d518d63 (patch) | |
| tree | 286ba0ae1bbf08491aad2deddf5fb3b7114cfe7d /drivers/video/sh_mobile_meram.h | |
| parent | 947204a724d45083033b6706dad40d47022e5d70 (diff) | |
PCI: ARI is a PCIe v2 feature
commit 864d296cf948aef0fa32b81407541572583f7572 upstream.
The function pci_enable_ari() may mistakenly set the downstream port
of a v1 PCIe switch in ARI Forwarding mode. This is a PCIe v2 feature,
and with an SR-IOV device on that switch port believing the switch above
is ARI capable it may attempt to use functions 8-255, translating into
invalid (non-zero) device numbers for that bus. This has been seen
to cause Completion Timeouts and general misbehaviour including hangs
and panics.
Acked-by: Don Dutile <ddutile@redhat.com>
Tested-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/video/sh_mobile_meram.h')
0 files changed, 0 insertions, 0 deletions