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s390x: sclp: refactor invalid command check

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Invalid command checking has to be done before the boundary check,
refactoring it now allows to insert the boundary check at the correct
place later.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Message-Id: <1569591203-15258-2-git-send-email-imbrenda@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Janosch Frank 2019-09-27 15:33:20 +02:00 • committed by Christian Borntraeger
parent 7df1dac5f1
commit 679b844756
2 changed files with 16 additions and 4 deletions
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3
hw/s390x/event-facility.c
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@ -377,9 +377,6 @@ static void command_handler(SCLPEventFacility *ef, SCCB *sccb, uint64_t code)
case SCLP_CMD_WRITE_EVENT_MASK:
write_event_mask(ef, sccb);
break;
default:
sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
break;
}
}