ec0c2ca135
The pci bus driver handles the power state, it also manages configuration state saving and restoring for its child devices. Thus a PCI device driver does not have to worry about those things. In fact, I observe a hard system hang when trying to suspend a system with active radeonkms driver where both the bus driver and radeonkms driver try to do the same thing. I suspect that it could be because of an access to a PCI configuration register after the device is placed into D3 state. Reviewed by: dumbbell, jhb MFC after: 13 days Differential Revision: https://reviews.freebsd.org/D3561
# $FreeBSD$ == Updates to reg_srcs/ files == When a file in the "reg_srcs" subdirectory in updated, be sure to regen headers by running "make" in tools/tools/drm/radeon/mkregtable.