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s390/qdio: fix output of DSCI value in debug file

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The DSCI is a 1-byte field, placed at the start of an u32. So when
printing it to a queue's debug state, limit the output to the part
that's actually occupied by the DSCI.
When the DSCI is set this gives us the expected output of '1', rather
than the current (obscure) value of '16777216'.

Suggested-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Julian Wiedmann 2019-03-28 13:48:44 +01:00 committed by Martin Schwidefsky
parent 093ddccb55
commit 34298422cc
1 changed files with 2 additions and 2 deletions
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4
drivers/s390/cio/qdio_debug.c
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@ -128,8 +128,8 @@ static int qstat_show(struct seq_file *m, void *v)
seq_printf(m, "polling: %d ack start: %d ack count: %d\n",
q->u.in.polling, q->u.in.ack_start,
q->u.in.ack_count);
seq_printf(m, "DSCI: %d IRQs disabled: %u\n",
*(u32 *)q->irq_ptr->dsci,
seq_printf(m, "DSCI: %x IRQs disabled: %u\n",
*(u8 *)q->irq_ptr->dsci,
test_bit(QDIO_QUEUE_IRQS_DISABLED,
&q->u.in.queue_irq_state));
}