commit 836e91b6c9db8bde0cc02f14e17ad3477c7d8284
author Corentin LABBE <clabbe.montjoie@gmail.com> Tue Dec 13 15:51:10 2016 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Sat Jun 25 11:45:10 2022 +0200
tree 3e9bd531ac223cf9b833a2994855e21cf5387274
parent e1b293341cc3bea31b07e07f76adcbeab37ebe43

hwrng: core - rewrite better comparison to NULL

commit 2a971e3b248775f808950bdc0ac75f12a2853eff upstream.

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

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/char/hw_random/core.c

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 333ea95..7faa48d 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -439,8 +439,7 @@
 	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);