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[S390] cio: Make CIO_* macros safe if dbfs are not available.

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Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Cornelia Huck 2007-07-27 12:29:20 +02:00 committed by Martin Schwidefsky
parent e556bbbd9d
commit 303fa9e396
1 changed files with 2 additions and 0 deletions
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2
drivers/s390/cio/cio_debug.h
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@ -23,6 +23,8 @@ extern debug_info_t *cio_debug_crw_id;
static inline void
CIO_HEX_EVENT(int level, void *data, int length)
{
if (unlikely(!cio_debug_trace_id))
return;
while (length > 0) {
debug_event(cio_debug_trace_id, level, data, length);
length -= cio_debug_trace_id->buf_size;