diff options
author | Mark Brown <broonie@kernel.org> | 2016-07-29 21:38:37 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2016-07-29 21:38:37 +0100 |
commit | da9a92f0cde9ce34a930d7edcaef30429e41d14a (patch) | |
tree | 44095fbc8f83990330437d11c7a9fc699a5e2521 /kernel/trace | |
parent | aa6b4960f4571ecc422a13b2490e91f5debb64a1 (diff) | |
parent | b0ba6b0a5eb2b51037a07dbf5a7470ca804d575c (diff) |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'kernel/trace')
-rw-r--r-- | kernel/trace/trace_printk.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c index f96f0383f6c6..ad1d6164e946 100644 --- a/kernel/trace/trace_printk.c +++ b/kernel/trace/trace_printk.c @@ -36,6 +36,10 @@ struct trace_bprintk_fmt { static inline struct trace_bprintk_fmt *lookup_format(const char *fmt) { struct trace_bprintk_fmt *pos; + + if (!fmt) + return ERR_PTR(-EINVAL); + list_for_each_entry(pos, &trace_bprintk_fmt_list, list) { if (!strcmp(pos->fmt, fmt)) return pos; @@ -57,7 +61,8 @@ void hold_module_trace_bprintk_format(const char **start, const char **end) for (iter = start; iter < end; iter++) { struct trace_bprintk_fmt *tb_fmt = lookup_format(*iter); if (tb_fmt) { - *iter = tb_fmt->fmt; + if (!IS_ERR(tb_fmt)) + *iter = tb_fmt->fmt; continue; } |