>  failure_cleanup:
> -     printk(KERN_ERR "Error: %d. Cleaning Up.\n", err);
> +     printk(KERN_ERR "%s: registering device failed (err=%d)\n", DRV_NAME, 
> err);

You can even drop that. driver core will report the errno if probe
returns not with 0 or -ENODEV.

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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