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[S390] cio: introduce isc_(un)register functions.

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This interface makes it easy for drivers to register usage of different
I/O interruption subclasses without needing to worry about possible
other users of the same isc.

Signed-off-by: Sebastian Ott <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
This commit is contained in:
Sebastian Ott 2008-07-14 09:59:00 +02:00 • committed by Heiko Carstens
commit fcc6ab335b
3 changed files with 76 additions and 2 deletions
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6
include/asm-s390/isc.h
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@ -1,6 +1,8 @@
#ifndef _ASM_S390_ISC_H
#define _ASM_S390_ISC_H
#include <linux/types.h>
/*
* I/O interruption subclasses used by drivers.
* Please add all used iscs here so that it is possible to distribute
@ -15,4 +17,8 @@
/* Adapter interrupts. */
#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */
/* Functions for registration of I/O interruption subclasses */
void isc_register(unsigned int isc);
void isc_unregister(unsigned int isc);
#endif /* _ASM_S390_ISC_H */