11 #include <asm/isc.h>
19  * @isc: I/O interruption subclass to register
21  * The number of users for @isc is increased. If this is the first user to
22  * register @isc, the corresponding I/O interruption subclass mask is enabled.
27 void isc_register(unsigned int isc)  in isc_register()  argument
29 	if (isc > MAX_ISC) {  in isc_register()
35 	if (isc_refs[isc] == 0)  in isc_register()
36 		system_ctl_set_bit(6, 31 - isc);  in isc_register()
37 	isc_refs[isc]++;  in isc_register()
44  * @isc: I/O interruption subclass to unregister
46  * The number of users for @isc is decreased. If this is the last user to
47  * unregister @isc, the corresponding I/O interruption subclass mask is
50  * before by the driver for @isc.
55 void isc_unregister(unsigned int isc)  in isc_unregister()  argument
59 	if (isc > MAX_ISC || isc_refs[isc] == 0) {  in isc_unregister()
63 	if (isc_refs[isc] == 1)  in isc_unregister()
64 		system_ctl_clear_bit(6, 31 - isc);  in isc_unregister()
65 	isc_refs[isc]--;  in isc_unregister()