[PATCH 3/7] kernel-trace: Adjust two checks for null pointers in compatible_field()

SF Markus Elfring
2017-05-05T21:03:23Z

Date: Fri, 5 May 2017 20:00:11 +0200
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code place.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
kernel/trace/trace_events_hist.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index df566e21344d..36412deac24c 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1324,7 +1324,7 @@ static bool compatible_field(struct ftrace_event_field *field,
{
if (field = test_field)
return true;
- if (field = NULL || test_field = NULL)
+ if (!field || !test_field)
return false;
if (strcmp(field->name, test_field->name) != 0)
return false;
--
2.12.2