Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=303fa9e39605c1d56971dd22cd04d2186dc42c98
Commit: 303fa9e39605c1d56971dd22cd04d2186dc42c98
Parent: e556bbbd9d2ff2b158915945ac82e2ac7def4d2f
Author: Cornelia Huck <[EMAIL PROTECTED]>
AuthorDate: Fri Jul 27 12:29:20 2007 +0200
Committer: Martin Schwidefsky <[EMAIL PROTECTED]>
CommitDate: Fri Jul 27 12:29:20 2007 +0200
[S390] cio: Make CIO_* macros safe if dbfs are not available.
Signed-off-by: Cornelia Huck <[EMAIL PROTECTED]>
Signed-off-by: Martin Schwidefsky <[EMAIL PROTECTED]>
---
drivers/s390/cio/cio_debug.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index f88844a..c9bf898 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -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;
-
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