linux-kernel - [PATCH 3/3] [media] mb86a20s: Delete a jump target in mb86a20s

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]

Date:   Thu, 31 Aug 2017 21:58:59 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Max Kellermann <max.kellermann@...il.com>,
        Nicolas Iooss <nicolas.iooss_linux@....org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 3/3] [media] mb86a20s: Delete a jump target in
 mb86a20s_attach()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 31 Aug 2017 21:34:58 +0200

* Return directly after a call of the function "kzalloc" failed
  at the beginning.

* Move a bit of exception handling code into an if branch.

* Adjust a condition check.

* Delete the jump target "error" which became unnecessary
  with this refactoring.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/dvb-frontends/mb86a20s.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index ba7a433dd424..bdaf9d235fed 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -2073,7 +2073,7 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;
@@ -2086,22 +2086,16 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 
 	/* Check if it is a mb86a20s frontend */
 	rev = mb86a20s_readreg(state, 0);
-
-	if (rev == 0x13) {
-		dev_info(&i2c->dev,
-			 "Detected a Fujitsu mb86a20s frontend\n");
-	} else {
+	if (rev != 0x13) {
+		kfree(state);
 		dev_dbg(&i2c->dev,
 			"Frontend revision %d is unknown - aborting.\n",
 		       rev);
-		goto error;
+		return NULL;
 	}
 
+	dev_info(&i2c->dev, "Detected a Fujitsu mb86a20s frontend\n");
 	return &state->frontend;
-
-error:
-	kfree(state);
-	return NULL;
 }
 EXPORT_SYMBOL(mb86a20s_attach);
 
-- 
2.14.1