linux-kernel - [PATCH v] media: dvb-frontends: remove unnecessary null pointer check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20130115210700.GA12272@gmail.com>
Date:	Tue, 15 Jan 2013 22:07:02 +0100
From:	Cong Ding <dinggnu@...il.com>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Antti Palosaari <crope@....fi>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Evgeny Plehov <EvgenyPlehov@....net>,
	Peter Senna Tschudin <peter.senna@...il.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v] media: dvb-frontends: remove unnecessary null pointer check

The address of a variable is impossible to be null, so we remove the check.

Signed-off-by: Cong Ding <dinggnu@...il.com>
---
sorry for sending again. I didn't notice there are another 2 places with the
same issue.
 - cong

 drivers/media/dvb-frontends/stv0900_core.c |   14 ++++----------
 drivers/media/dvb-frontends/stv0900_sw.c   |    7 ++-----
 2 files changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/media/dvb-frontends/stv0900_core.c b/drivers/media/dvb-frontends/stv0900_core.c
index 0fb34e1..e5a87b5 100644
--- a/drivers/media/dvb-frontends/stv0900_core.c
+++ b/drivers/media/dvb-frontends/stv0900_core.c
@@ -524,11 +524,8 @@ void stv0900_set_tuner(struct dvb_frontend *fe, u32 frequency,
 	struct dvb_frontend_ops *frontend_ops = NULL;
 	struct dvb_tuner_ops *tuner_ops = NULL;
 
-	if (&fe->ops)
-		frontend_ops = &fe->ops;
-
-	if (&frontend_ops->tuner_ops)
-		tuner_ops = &frontend_ops->tuner_ops;
+	frontend_ops = &fe->ops;
+	tuner_ops = &frontend_ops->tuner_ops;
 
 	if (tuner_ops->set_frequency) {
 		if ((tuner_ops->set_frequency(fe, frequency)) < 0)
@@ -552,11 +549,8 @@ void stv0900_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
 	struct dvb_frontend_ops *frontend_ops = NULL;
 	struct dvb_tuner_ops *tuner_ops = NULL;
 
-	if (&fe->ops)
-		frontend_ops = &fe->ops;
-
-	if (&frontend_ops->tuner_ops)
-		tuner_ops = &frontend_ops->tuner_ops;
+	frontend_ops = &fe->ops;
+	tuner_ops = &frontend_ops->tuner_ops;
 
 	if (tuner_ops->set_bandwidth) {
 		if ((tuner_ops->set_bandwidth(fe, bandwidth)) < 0)
diff --git a/drivers/media/dvb-frontends/stv0900_sw.c b/drivers/media/dvb-frontends/stv0900_sw.c
index 4af2078..0a40edf 100644
--- a/drivers/media/dvb-frontends/stv0900_sw.c
+++ b/drivers/media/dvb-frontends/stv0900_sw.c
@@ -1167,11 +1167,8 @@ static u32 stv0900_get_tuner_freq(struct dvb_frontend *fe)
 	struct dvb_tuner_ops *tuner_ops = NULL;
 	u32 freq = 0;
 
-	if (&fe->ops)
-		frontend_ops = &fe->ops;
-
-	if (&frontend_ops->tuner_ops)
-		tuner_ops = &frontend_ops->tuner_ops;
+	frontend_ops = &fe->ops;
+	tuner_ops = &frontend_ops->tuner_ops;
 
 	if (tuner_ops->get_frequency) {
 		if ((tuner_ops->get_frequency(fe, &freq)) < 0)
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/