K 10
svn:author
V 6
sbruno
K 8
svn:date
V 27
2017-01-25T14:37:05.366991Z
K 7
svn:log
V 422
Add error checking to the pci_find_cap(, PCIY_MSIX,) call that is returns
success and a good value.  Only then try to use it and set the MSIX_ENABLE
bit.

With the current em(4) driver we have observed failures in this case in a
specific environment when pci_find_cap() would not return the assumed
value, which meant we ended up writing to PCI register 2 (PCI_DEVICE_ID)
which is read-only.

PR:		216456
Submitted by:	bz

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