Input: ALPS - handle errors from input_register_device()

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

2 files changed, 9 insertions, 5 deletions

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 4e71a66fc7fc..cf3e4664e72b 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -424,14 +424,15 @@ int alps_init(struct psmouse *psmouse)
         struct input_dev *dev1 = psmouse->dev, *dev2;
         int version;
 
-        psmouse->private = priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
+        priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
         dev2 = input_allocate_device();
         if (!priv || !dev2)
                 goto init_fail;
 
         priv->dev2 = dev2;
 
-        if (!(priv->i = alps_get_model(psmouse, &version)))
+        priv->i = alps_get_model(psmouse, &version);
+        if (!priv->i)
                 goto init_fail;
 
         if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
@@ -480,7 +481,8 @@ int alps_init(struct psmouse *psmouse)
         dev2->relbit[LONG(REL_X)] |= BIT(REL_X) | BIT(REL_Y);
         dev2->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
 
-        input_register_device(priv->dev2);
+        if (input_register_device(priv->dev2))
+                goto init_fail;
 
         psmouse->protocol_handler = alps_process_byte;
         psmouse->poll = alps_poll;
@@ -491,9 +493,11 @@ int alps_init(struct psmouse *psmouse)
         /* We are having trouble resyncing ALPS touchpads so disable it for now */
         psmouse->resync_time = 0;
 
+        psmouse->private = priv;
         return 0;
 
 init_fail:
+        psmouse_reset(psmouse);
         input_free_device(dev2);
         kfree(priv);
         return -1;
@@ -504,7 +508,8 @@ int alps_detect(struct psmouse *psmouse, int set_properties)
         int version;
         const struct alps_model_info *model;
 
-        if (!(model = alps_get_model(psmouse, &version)))
+        model = alps_get_model(psmouse, &version);
+        if (!model)
                 return -1;
 
         if (set_properties) {
diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
index f85ac40ec941..4bbddc99962b 100644
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -20,7 +20,6 @@ struct alps_model_info {
 
 struct alps_data {
         struct input_dev *dev2;         /* Relative device */
-        char name[32];                  /* Name */
         char phys[32];                  /* Phys */
         const struct alps_model_info *i;/* Info */
         int prev_fin;                   /* Finger bit from previous packet */