Also, looking at that driver more, this needs to die, like now:
#define format_group attr_groups[0]
#define cpumask_group attr_groups[1]
#define events_group attr_groups[2]
#define null_group attr_groups[3]
Like, kill it dead. Define a separate array, look what the other drivers
do, whatever, but this is too ugly to live.
Thanks.
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