[PATCH] Input: ili210x: Fix potential memory leaks

[Adam Ford]

This driver requests, memory twice and requests a threaded irq, but
it doesn't free any of them if something fails.

This patch attempts to identify areas where a return was issued
without freeing allocated memory or IRQ's.

Signed-off-by: Adam Ford <aford...@gmail.com>

diff --git a/drivers/input/touchscreen/ili210x.c 
b/drivers/input/touchscreen/ili210x.c
index 199cf3daec10..967329fbdde3 100644
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -421,7 +421,7 @@ static int ili210x_i2c_probe(struct i2c_client *client,
 
        input = devm_input_allocate_device(dev);
        if (!input)
-               return -ENOMEM;
+               goto free_priv;
 
        priv->client = client;
        priv->input = input;
@@ -443,7 +443,7 @@ static int ili210x_i2c_probe(struct i2c_client *client,
                                    INPUT_MT_DIRECT);
        if (error) {
                dev_err(dev, "Unable to set up slots, err: %d\n", error);
-               return error;
+               goto free_input;
        }
 
        error = devm_request_threaded_irq(dev, client->irq, NULL, ili210x_irq,
@@ -451,27 +451,36 @@ static int ili210x_i2c_probe(struct i2c_client *client,
        if (error) {
                dev_err(dev, "Unable to request touchscreen IRQ, err: %d\n",
                        error);
-               return error;
+               goto free_input;
        }
 
        error = devm_add_action_or_reset(dev, ili210x_stop, priv);
        if (error)
-               return error;
+               goto free_irq;
 
        error = devm_device_add_group(dev, &ili210x_attr_group);
        if (error) {
                dev_err(dev, "Unable to create sysfs attributes, err: %d\n",
                        error);
-               return error;
+               goto free_irq;
        }
 
        error = input_register_device(priv->input);
        if (error) {
                dev_err(dev, "Cannot register input device, err: %d\n", error);
-               return error;
+               goto free_irq;
        }
 
        return 0;
+
+free_irq:
+       free_irq(client->irq, client);
+free_input:
+       input_free_device(input);
+free_priv:
+       kfree(priv);
+
+       return error;
 }
 
 static const struct i2c_device_id ili210x_i2c_id[] = {
-- 
2.25.1