greybus: greybus_trace: Fix broken greybus ftrace

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Enabling greybus ftrace event causes null pointer access due to
that gb_message to SVC has no Bundle. Fix it by handling this in
the trace header.

Testing Done:
$ echo 1 > /d/tracing/event/greybus/enable
 [002] ...1    54.504426: gb_message_send: greybus:1-svc op=0023 if_id=0 hd_id=0 l=0
 [002] ...1    54.504461: gb_host_device_send: greybus:greybus1 if_id=0 l=8

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

...

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David Lin 2016-03-18 18:30:50 -07:00 • committed by Greg Kroah-Hartman

parent 309520ec93

commit 30b442b385

1 changed files with 7 additions and 2 deletions

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drivers/staging/greybus/greybus_trace.h

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