linux-kernel - [PATCH v2 3/3] Input: ad7897 - use separate error handling for different allocators

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Date:   Wed,  8 Nov 2017 16:04:03 +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 v2 3/3] Input: ad7897 - use separate error handling for different allocators

Split the error between devm_kzalloc and
devm_input_allocate_device, there is no need to call the second
allocator if the first has failed. Besides this doesn't provide
practical advantages.

CC: Michael Hennerich <michael.hennerich@...log.com>
Signed-off-by: Andi Shyti <andi@...zian.org>
---
 drivers/input/touchscreen/ad7877.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index cf59e569d890..98deffde3fe2 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -710,6 +710,9 @@ static int ad7877_probe(struct spi_device *spi)
 	}
 
 	ts = devm_kzalloc(&spi->dev, sizeof(struct ad7877), GFP_KERNEL);
+	if (!ts)
+		return -ENOMEM;
+
 	input_dev = devm_input_allocate_device(&spi->dev);
 	if (!input_dev)
 		return -ENOMEM;
-- 
2.15.0