diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-15 10:06:20 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-15 10:06:20 -0300 |
| commit | b30a7d1fc96d60fe2c02e375a56a046385701d17 (patch) | |
| tree | 38cfab671653991a5c6c925d5c9946c27acab8d9 | |
| parent | a0b2f5af4c99d3da7ce9bc2b3b4641c8ffd22615 (diff) | |
perf pmu: Fix check for unset alias->unit array
The alias->unit field is an array, so to check that it is not set we
should see if it is an empty string, i.e. alias->unit[0], instead of
checking alias->unit != NULL, as this will _always_ evaluate to 'true'.
Pointed out by clang.
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170214182435.GD4458@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/pmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 82a654dec666..49bfee0e3d9e 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -945,12 +945,12 @@ static int check_info_data(struct perf_pmu_alias *alias, * define unit, scale and snapshot, fail * if there's more than one. */ - if ((info->unit && alias->unit) || + if ((info->unit && alias->unit[0]) || (info->scale && alias->scale) || (info->snapshot && alias->snapshot)) return -EINVAL; - if (alias->unit) + if (alias->unit[0]) info->unit = alias->unit; if (alias->scale) |