Make sure to deregister and release the nvmem device and underlying
memory on registration errors.
Note that the private data must be freed using put_device() once the
struct device has been initialised.
Also note that there's a related reference leak in the deregistration
function as reported by Mika Westerberg which is being fixed separately.
Fixes: b6c217ab9be6 ("nvmem: Add backwards compatibility support for older EEPROM drivers.")
Fixes: eace75cfdcf7 ("nvmem: Add a simple NVMEM framework for nvmem providers")
Cc: stable <stable@vger.kernel.org> # 4.3
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rval = device_add(&nvmem->dev);
if (rval)
- goto out;
+ goto err_put_device;
if (config->compat) {
rval = nvmem_setup_compat(nvmem, config);
if (rval)
- goto out;
+ goto err_device_del;
}
if (config->cells)
nvmem_add_cells(nvmem, config);
return nvmem;
-out:
- ida_simple_remove(&nvmem_ida, nvmem->id);
- kfree(nvmem);
+
+err_device_del:
+ device_del(&nvmem->dev);
+err_put_device:
+ put_device(&nvmem->dev);
+
return ERR_PTR(rval);
}
EXPORT_SYMBOL_GPL(nvmem_register);