K 10
svn:author
V 7
landonf
K 8
svn:date
V 27
2018-01-10T22:19:11.999989Z
K 7
svn:log
V 452
Fix minor locking issues in the Power Mac Uninorth PCI bridge driver.

- Call resource_int_value() once during attach, rather than within the
  pci_(read|write)_config() code path; this avoids taking a blocking mutex
  to read kenv variables.

- Use a spin lock to protect non-atomic config space accesses; this matches
  the behavior of Darwin's AppleMacRiscPCI driver.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D13839

END