linux-kernel - [PATCH 1/4] Input: synaptics-rmi4 - fix handling failures from rmi_enable

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Date:   Fri, 24 Mar 2017 23:00:47 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Andrew Duggan <aduggan@...aptics.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Nick Dyer <nick@...anahar.org>
Subject: [PATCH 1/4] Input: synaptics-rmi4 - fix handling failures from rmi_enable_sensor

If rmi_enable_sensor() fails in rmi_driver_probe(), we should not return
immediately, but disable IRQs and tear down function list.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/rmi4/rmi_driver.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index d9cfe4ec93fa..daba87c7e707 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -1229,16 +1229,21 @@ static int rmi_driver_probe(struct device *dev)
 	if (retval < 0)
 		goto err_destroy_functions;
 
-	if (data->f01_container->dev.driver)
+	if (data->f01_container->dev.driver) {
 		/* Driver already bound, so enable ATTN now. */
-		return rmi_enable_sensor(rmi_dev);
+		retval = rmi_enable_sensor(rmi_dev);
+		if (retval)
+			goto err_disable_irq;
+	}
 
 	return 0;
 
+err_disable_irq:
+	rmi_disable_irq(rmi_dev, false);
 err_destroy_functions:
 	rmi_free_function_list(rmi_dev);
 err:
-	return retval < 0 ? retval : 0;
+	return retval;
 }
 
 static struct rmi_driver rmi_physical_driver = {
-- 
2.12.1.578.ge9c3154ca4-goog