From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Tue, 4 Oct 2016 17:05:57 +0200
Subject: Char device write repeating
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On Tue, Oct 04, 2016 at 10:58:16AM -0400, Kenneth Adam Miller wrote:
> I have a character device that I am calling write on and which is succeeding,
> but which is repeatedly executing. I have hard coded the return value to one,
> so I don't think the userland standard library is retrying but I could be
> wrong. Can anybody tell me why write would be re-executed by the kernel and how
> to fix it? I dont actually copy_from_user, I just need this in order to signal
> kernel land.

Do you have a pointer to your code somewhere?  This is a very common bug
that people have...

thanks,

greg k-h