Warner Losh e2c1243f42 fd: Move from using device_busy to a refcount ... Use refcounting to delay the detach rather than device_busy and/or device_unbusy. fd/fdc is one of the few consumers of device_busy in the tree for that, and it's not a good fit. Also, nothing is waking 'fd' and other drivers don't loop like this. Return EBUSY if we still have active users. Sponsored by: Netflix Reviewed by: mav Differential Revision: https://reviews.freebsd.org/D31830		2021-09-29 20:18:28 -06:00
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fdc_acpi.c
fdc_isa.c
fdc.c	fd: Move from using device_busy to a refcount	2021-09-29 20:18:28 -06:00
fdcvar.h