linux-kernel - [PATCH 1/3] [media] DVB-frontends: Deletion of unnecessary checks before the function call "release

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Message-ID: <546DA770.5050709@users.sourceforge.net>
Date:	Thu, 20 Nov 2014 09:33:52 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Antti Palosaari <crope@....fi>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	linux-media@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/3] [media] DVB-frontends: Deletion of unnecessary checks
 before the function call "release_firmware"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 19 Nov 2014 22:27:24 +0100

The release_firmware() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/dvb-frontends/drx39xyj/drxj.c | 3 +--
 drivers/media/dvb-frontends/drxk_hard.c     | 3 +--
 drivers/media/dvb-frontends/m88ds3103.c     | 3 +--
 drivers/media/dvb-frontends/si2168.c        | 3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c b/drivers/media/dvb-frontends/drx39xyj/drxj.c
index 7ca7a21..08e6ca5 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drxj.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c
@@ -12255,8 +12255,7 @@ static void drx39xxj_release(struct dvb_frontend *fe)
 	kfree(demod->my_ext_attr);
 	kfree(demod->my_common_attr);
 	kfree(demod->my_i2c_dev_addr);
-	if (demod->firmware)
-		release_firmware(demod->firmware);
+	release_firmware(demod->firmware);
 	kfree(demod);
 	kfree(state);
 }
diff --git a/drivers/media/dvb-frontends/drxk_hard.c b/drivers/media/dvb-frontends/drxk_hard.c
index cce94a7..f871478 100644
--- a/drivers/media/dvb-frontends/drxk_hard.c
+++ b/drivers/media/dvb-frontends/drxk_hard.c
@@ -6309,8 +6309,7 @@ static void drxk_release(struct dvb_frontend *fe)
 	struct drxk_state *state = fe->demodulator_priv;
 
 	dprintk(1, "\n");
-	if (state->fw)
-		release_firmware(state->fw);
+	release_firmware(state->fw);
 
 	kfree(state);
 }
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
index dfe0c2f..e88f0f6 100644
--- a/drivers/media/dvb-frontends/m88ds3103.c
+++ b/drivers/media/dvb-frontends/m88ds3103.c
@@ -637,8 +637,7 @@ skip_fw_download:
 
 	return 0;
 err:
-	if (fw)
-		release_firmware(fw);
+	release_firmware(fw);
 
 	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
 	return ret;
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 8f81d97..6a455f9 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -469,8 +469,7 @@ static int si2168_init(struct dvb_frontend *fe)
 
 	return 0;
 err:
-	if (fw)
-		release_firmware(fw);
+	release_firmware(fw);
 
 	dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
 	return ret;
-- 
2.1.3

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