linux-kernel - [PATCH] staging: pi433: Remove unnecessary return variable

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Message-Id: <20190523121927.28806-1-nishkadg.linux@gmail.com>
Date:   Thu, 23 May 2019 17:49:27 +0530
From:   Nishka Dasgupta <nishkadg.linux@...il.com>
To:     gregkh@...uxfoundation.org, straube.linux@...il.com,
        realwakka@...il.com, hle@....eu.com, rico.schrage@...il.com,
        sophie.matter@....de, jbi.octave@...il.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Cc:     Nishka Dasgupta <nishka.dasgupta@...oo.com>
Subject: [PATCH] staging: pi433: Remove unnecessary return variable

From: Nishka Dasgupta <nishka.dasgupta@...oo.com>

The variable retval is initialised to 0 and assigned a constant value
later. Both of these can be returned separately, hence retval can be
removed.

Signed-off-by: Nishka Dasgupta <nishka.dasgupta@...oo.com>
---
 drivers/staging/pi433/pi433_if.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index c889f0bdf424..40c6f4e7632f 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -871,7 +871,6 @@ pi433_write(struct file *filp, const char __user *buf,
 static long
 pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-	int			retval = 0;
 	struct pi433_instance	*instance;
 	struct pi433_device	*device;
 	struct pi433_tx_cfg	tx_cfg;
@@ -923,10 +922,10 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		mutex_unlock(&device->rx_lock);
 		break;
 	default:
-		retval = -EINVAL;
+		return -EINVAL;
 	}
 
-	return retval;
+	return 0;
 }
 
 #ifdef CONFIG_COMPAT
-- 
2.19.1