From: Bjørn Mork <bjorn@xxxxxxx>
Date: Fri, 22 May 2015 13:15:22 +0200
> The tx_curr_frame_payload field is u32. When we try to calculate a
> small negative delta based on it, we end up with a positive integer
> close to 2^32 instead. So the tx_bytes pointer increases by about
> 2^32 for every transmitted frame.
>
> Fix by calculating the delta as a signed long.
>
> Cc: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
> Reported-by: Florian Bruhin <me@xxxxxxxxxxxxxxxx>
> Fixes: 7a1e890e2168 ("usbnet: Fix tx_bytes statistic running backward in cdc_ncm")
> Signed-off-by: Bjørn Mork <bjorn@xxxxxxx>
Applied and queued up for -stable.
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