> driver_bar(file, struct video_bar *b)
> {
> struct file_data *fh = file->priv_data;
> struct driver_data *drv = fh->driver_data;
Why do you need those when you can pass them in ?
> I fail to see why the second is much better. The somewhat
> ugly void pointer for arg is hidden in the core code, but
> that's all. Is that really worth the effort?
Im not sure, Linus thinks yes
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