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| author | Arik Nemtsov <arik@wizery.com> | 2015-10-25 10:59:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-09 14:34:21 -0500 |
| commit | db96a3cfca19fd71caab2e88bc2e455da52d654e (patch) | |
| tree | 0a38ceeb28eadca1d17f321ca317062877887d28 | |
| parent | 85eeb5c5ad3d97ea3e59221b4237881b3a5d5731 (diff) | |
| download | lwn-db96a3cfca19fd71caab2e88bc2e455da52d654e.tar.gz lwn-db96a3cfca19fd71caab2e88bc2e455da52d654e.zip | |
mac80211: allow null chandef in tracing
commit 254d3dfe445f94a764e399ca12e04365ac9413ed upstream.
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.
Fixes: a7a6bdd0670fe ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/mac80211/trace.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index 6f14591d8ca9..0b13bfa6f32f 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -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 |