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7.10 Unregistering the Card from the Hardware
Management Database
The following code shows how the el_unattach( ) routine unregisters the
card from the hardware management database:
lan_ehm_free(&sc->ehm); 1
1 Frees up any memory allocated for enhanced hardware management
and unregisters this card from the hardware management database.
7.11 Freeing Resources
The following code shows how the el_unattach( ) routine frees data
structures and memory that the adapter uses:
FREE(sc, M_DEVBUF);
1
el_softc[unit] = NULL;
el_info[unit] = NULL;
el_configured--;
return (ESUCCESS);
}
1 Frees all memory that the adapter uses, and returns ESUCCESS to
indicate that the unattach operation completed successfully.
Implementing the unattach Routine 7–5