linux-kernel - [PATCH 1/5] Input: ad7897 - use managed devm

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Date:   Thu,  2 Nov 2017 17:01:32 +0200
From:   Andi Shyti <andi@...zian.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Michael Hennerich <michael.hennerich@...log.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andi Shyti <andi@...zian.org>,
        Andi Shyti <andi.shyti@...sung.com>
Subject: [PATCH 1/5] Input: ad7897 - use managed devm_kzalloc

Allocate the driver's structure by using devm_kzalloc instead of
simple kzalloc and remove all the related kfree calls.

CC: Michael Hennerich <michael.hennerich@...log.com>
Signed-off-by: Andi Shyti <andi@...zian.org>
---
 drivers/input/touchscreen/ad7877.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index 0381c7809d1b..68941b72ed8a 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -707,9 +707,9 @@ static int ad7877_probe(struct spi_device *spi)
 		return err;
 	}
 
-	ts = kzalloc(sizeof(struct ad7877), GFP_KERNEL);
+	ts = devm_kzalloc(&spi->dev, sizeof(struct ad7877), GFP_KERNEL);
 	input_dev = input_allocate_device();
-	if (!ts || !input_dev) {
+	if (!input_dev) {
 		err = -ENOMEM;
 		goto err_free_mem;
 	}
@@ -799,7 +799,6 @@ static int ad7877_probe(struct spi_device *spi)
 	free_irq(spi->irq, ts);
 err_free_mem:
 	input_free_device(input_dev);
-	kfree(ts);
 	return err;
 }
 
@@ -813,7 +812,6 @@ static int ad7877_remove(struct spi_device *spi)
 	free_irq(ts->spi->irq, ts);
 
 	input_unregister_device(ts->input);
-	kfree(ts);
 
 	dev_dbg(&spi->dev, "unregistered touchscreen\n");
 
-- 
2.15.0