linux-kernel - [PATCH] hwrng: fix simple

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Date:	Sun, 4 Oct 2015 05:02:30 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Daniel Thompson <daniel.thompson@...aro.org>
Cc:	kbuild-all@...org, Matt Mackall <mpm@...enic.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	patches@...aro.org, linaro-kernel@...ts.linaro.org,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Subject: [PATCH] hwrng: fix simple_return.cocci warnings

drivers/char/hw_random/stm32-rng.c:164:1-4: WARNING: end returns can be simpified

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.

Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Daniel Thompson <daniel.thompson@...aro.org>
Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---

 stm32-rng.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -161,11 +161,7 @@ static int stm32_rng_probe(struct platfo
 	priv->rng.read = stm32_rng_read,
 	priv->rng.priv = (unsigned long) dev;
 
-	err = hwrng_register(&priv->rng);
-	if (err)
-		return err;
-
-	return 0;
+	return hwrng_register(&priv->rng);
 }
 
 static const struct of_device_id stm32_rng_match[] = {
--
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