linux-kernel - [PATCH v4 2/4] Input: cyttsp - check return value of input_mt_init

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Date:	Thu, 21 Jan 2016 20:21:14 +0100
From:	Oreste Salerno <oreste.salerno@...tom.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<linux-input@...r.kernel.org>, <fery@...ress.com>,
	<dmitry.torokhov@...il.com>, <robh+dt@...nel.org>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<devicetree@...r.kernel.org>, <oreste.salerno@...tom.com>
Subject: [PATCH v4 2/4] Input: cyttsp - check return value of input_mt_init_slots

Signed-off-by: Oreste Salerno <oreste.salerno@...tom.com>
---
 drivers/input/touchscreen/cyttsp_core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
index 3c2ee84..10379bc 100644
--- a/drivers/input/touchscreen/cyttsp_core.c
+++ b/drivers/input/touchscreen/cyttsp_core.c
@@ -584,7 +584,11 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
 			     0, CY_MAXZ, 0, 0);
 
-	input_mt_init_slots(input_dev, CY_MAX_ID, 0);
+	error = input_mt_init_slots(input_dev, CY_MAX_ID, 0);
+	if (error) {
+		dev_err(dev, "Unable to init MT slots.\n");
+		goto err_platform_exit;
+	}
 
 	error = devm_request_threaded_irq(dev, ts->irq, NULL, cyttsp_irq,
 					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-- 
1.9.1