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SubjectRe: [PATCH] drivers/char/ppdev.c: returning copy_to_user result
> Please take a look and consider applying. Feedback about why it would
> be wrong would be greatly appreciated.

I eyeballed this and it looks correct to me, except that the comment
at the top is slightly wrong.

On error, copy_from_user and copy_to_user do not return -EFAULT,
They return the positive number of bytes *not* copied due to address
space errors.

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