linux-kernel - [PATCH 2/7] hwrng: core: rewrite better comparison to NULL

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Message-Id: <1481293299-21697-2-git-send-email-clabbe.montjoie@gmail.com>
Date:   Fri,  9 Dec 2016 15:21:34 +0100
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     mpm@...enic.com, herbert@...dor.apana.org.au, arnd@...db.de,
        gregkh@...uxfoundation.org
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Corentin Labbe <clabbe.montjoie@...il.com>
Subject: [PATCH 2/7] hwrng: core: rewrite better comparison to NULL

This patch fix the checkpatch warning "Comparison to NULL could be written "!ptr"

Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
---
 drivers/char/hw_random/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 00cbb81..7029246 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -439,8 +439,7 @@ int hwrng_register(struct hwrng *rng)
 	int err = -EINVAL;
 	struct hwrng *old_rng, *tmp;
 
-	if (rng->name == NULL ||
-	    (rng->data_read == NULL && rng->read == NULL))
+	if (!rng->name || (!rng->data_read && !rng->read))
 		goto out;
 
 	mutex_lock(&rng_mutex);
-- 
2.7.3