This patch fixes the following checkpatch warnings:
WARNING:PREFER_PR_LEVEL: Prefer [subsystem eg: netdev]_dbg([subsystem]dev, ... then dev_dbg(dev, ... then pr_debug(... to printk(KERN_DEBUG ...
WARNING:PRINTK_WITHOUT_KERN_LEVEL: printk() should include KERN_<LEVEL> facility level
WARNING:TRACING_LOGGING: Unnecessary ftrace-like logging - prefer using ftrace
ERROR:TRAILING_STATEMENTS: trailing statements should be on next line
Convert logging to the recommend pr_* macros.
Signed-off-by: Stefan Herdler <herdler@nurfuerspam.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>