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mac80211: allow null chandef in tracing 

In TDLS channel-switch operations the chandef can sometimes be NULL.
Avoid an oops in the trace code for these cases and just print a
chandef full of zeros.

Cc: stable@vger.kernel.org
Fixes: a7a6bdd067 ("mac80211: introduce TDLS channel switch ops")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2015-10-25 10:59:41 +02:00 committed by Johannes Berg
parent 4baf6bea37
commit 254d3dfe44
1 changed files with 5 additions and 5 deletions
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10
net/mac80211/trace.h
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@ -33,11 +33,11 @@
__field(u32, chan_width) \
__field(u32, center_freq1) \
__field(u32, center_freq2)
#define CHANDEF_ASSIGN(c) \
__entry->control_freq = (c)->chan ? (c)->chan->center_freq : 0; \
__entry->chan_width = (c)->width; \
__entry->center_freq1 = (c)->center_freq1; \
__entry->center_freq2 = (c)->center_freq2;
#define CHANDEF_ASSIGN(c) \
__entry->control_freq = (c) ? ((c)->chan ? (c)->chan->center_freq : 0) : 0; \
__entry->chan_width = (c) ? (c)->width : 0; \
__entry->center_freq1 = (c) ? (c)->center_freq1 : 0; \
__entry->center_freq2 = (c) ? (c)->center_freq2 : 0;
#define CHANDEF_PR_FMT " control:%d MHz width:%d center: %d/%d MHz"
#define CHANDEF_PR_ARG __entry->control_freq, __entry->chan_width, \
__entry->center_freq1, __entry->center_freq2