Commit b59f2f2b authored by Tom Zanussi's avatar Tom Zanussi Committed by Steven Rostedt (Google)

tracing: Fix smatch warning for do while check in event_hist_trigger_parse()

The patch ec5ce098: "tracing: Allow whitespace to surround hist
trigger filter" from Jan 15, 2018, leads to the following Smatch
static checker warning:

    kernel/trace/trace_events_hist.c:6199 event_hist_trigger_parse()
    warn: 'p' can't be NULL.

Since p is always checked for a NULL value at the top of loop and
nothing in the rest of the loop will set it to NULL, the warning
is correct and might as well be 1 to silence the warning.

Link: https://lkml.kernel.org/r/a1d4c79766c0cf61e20438dc35244d216633fef6.1643319703.git.zanussi@kernel.org

Fixes: ec5ce098 ("tracing: Allow whitespace to surround hist trigger filter")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarTom Zanussi <zanussi@kernel.org>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 798a5b6c
...@@ -6199,7 +6199,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops, ...@@ -6199,7 +6199,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops,
continue; continue;
} }
break; break;
} while (p); } while (1);
if (!p) if (!p)
param = NULL; param = NULL;
......
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