[PATCH v3 32/49] Input: atmel_mxt_ts - Change call-points of mxt_free_* functions

[Jiada Wang]

From: Kautuk Consul <kautuk_con...@mentor.com>

Revamping the code to call mxt_free_object_table and mxt_free_input_device
functions only in the following scenarios and code paths:
1) The error path of the mxt_probe() entry point
2) The mxt_remove de-init path entry point
3) All paths which definitely expect to populate the object table
   like:
   - the mxt_update_fw_store path which first calls
     mxt_load_fw and then resorts to calling mxt_initialize itself.
   - the mxt_read_info_block function which attempts to fill in the
     object table itself as the main non-error part of the logic.
4) All paths in the code expected to definitely allocate and register
   the input device such as:
   - the mxt_update_fw_store path which first calls
     mxt_load_fw and then resorts to calling mxt_initialize itself.
   - the mxt_update_cfg_store function which will call
     mxt_configure_objects.

Signed-off-by: Kautuk Consul <kautuk_con...@mentor.com>
Signed-off-by: George G. Davis <george_da...@mentor.com>
Signed-off-by: Jiada Wang <jiada_w...@mentor.com>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c 
b/drivers/input/touchscreen/atmel_mxt_ts.c
index 560fe8a3bf62..e441eab8b201 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -3339,21 +3339,21 @@ static int mxt_configure_objects(struct mxt_data *data,
        error = mxt_init_t7_power_cfg(data);
        if (error) {
                dev_err(dev, "Failed to initialize power cfg\n");
-               goto err_free_object_table;
+               return error;
        }
 
        if (cfg) {
                error = mxt_update_cfg(data, cfg);
                if (error) {
                        dev_warn(dev, "Error %d updating config\n", error);
-                       goto err_free_object_table;
+                       return error;
                }
        }
 
        if (data->multitouch) {
                error = mxt_initialize_input_device(data);
                if (error)
-                       goto err_free_object_table;
+                       return error;
        } else {
                dev_warn(dev, "No touch object detected\n");
        }
@@ -3361,10 +3361,6 @@ static int mxt_configure_objects(struct mxt_data *data,
        mxt_debug_init(data);
 
        return 0;
-
-err_free_object_table:
-       mxt_free_object_table(data);
-       return error;
 }
 
 /* Configuration crc check sum is returned as hex xxxxxx */
@@ -4101,16 +4097,21 @@ static int mxt_probe(struct i2c_client *client, const 
struct i2c_device_id *id)
 
        error = mxt_initialize(data);
        if (error)
-               return error;
+               goto err_free_object;
 
        error = sysfs_create_group(&client->dev.kobj, &mxt_fw_attr_group);
        if (error) {
                dev_err(&client->dev, "Failure %d creating fw sysfs group\n",
                        error);
-               return error;
+               goto err_free_object;
        }
 
        return 0;
+
+err_free_object:
+       mxt_free_input_device(data);
+       mxt_free_object_table(data);
+       return error;
 }
 
 static int mxt_remove(struct i2c_client *client)
-- 
2.19.2