linux-kernel - [PATCH 2/2] [media] drxd: Adjust a null pointer check in three functions

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 for Android: free password hash cracker in your pocket

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

Date:   Wed, 30 Aug 2017 21:17:13 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org,
        Colin Ian King <colin.king@...onical.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Max Kellermann <max.kellermann@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] [media] drxd: Adjust a null pointer check in three
 functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 30 Aug 2017 20:55:17 +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 places.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/dvb-frontends/drxd_hard.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/dvb-frontends/drxd_hard.c b/drivers/media/dvb-frontends/drxd_hard.c
index 47b0d37e70ba..3bdf9b1f4e7c 100644
--- a/drivers/media/dvb-frontends/drxd_hard.c
+++ b/drivers/media/dvb-frontends/drxd_hard.c
@@ -328,7 +328,7 @@ static int WriteTable(struct drxd_state *state, u8 * pTable)
 {
 	int status = 0;
 
-	if (pTable == NULL)
+	if (!pTable)
 		return 0;
 
 	while (!status) {
@@ -909,7 +909,7 @@ static int load_firmware(struct drxd_state *state, const char *fw_name)
 	}
 
 	state->microcode = kmemdup(fw->data, fw->size, GFP_KERNEL);
-	if (state->microcode == NULL) {
+	if (!state->microcode) {
 		release_firmware(fw);
 		return -ENOMEM;
 	}
@@ -2629,7 +2629,7 @@ static int DRXD_init(struct drxd_state *state, const u8 *fw, u32 fw_size)
 			break;
 
 		/* Apply I2c address patch to B1 */
-		if (!state->type_A && state->m_HiI2cPatch != NULL) {
+		if (!state->type_A && state->m_HiI2cPatch) {
 			status = WriteTable(state, state->m_HiI2cPatch);
 			if (status < 0)
 				break;
-- 
2.14.1