jhb 9873f1203d Revert most of r360179.
I had failed to notice that sgsendccb() was using cam_periph_mapmem()
and thus was not passing down user pointers directly to drivers.  In
practice this broke requests submitted from userland.

PR:		249395
Reported by:	Trenton Schulz <trueos@norwegianrockcat.com>
Reviewed by:	scottl
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D26550
2020-09-25 21:19:56 +00:00
..
2020-09-25 21:19:56 +00:00