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Date:   Fri, 26 Jun 2020 15:03:05 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net] enetc: Fix tx rings bitmap iteration range, irq

From: Claudiu Manoil <>
Date: Fri, 26 Jun 2020 19:17:29 +0300

> The rings bitmap of an interrupt vector encodes
> which of the device's rings were assigned to that
> interrupt vector.
> Hence the iteration range of the tx rings bitmap
> (for_each_set_bit()) should be the total number of
> Tx rings of that netdevice instead of the number of
> rings assigned to the interrupt vector.
> Since there are 2 cores, and one interrupt vector for
> each core, the number of rings asigned to an interrupt
> vector is half the number of available rings.
> The impact of this error is that the upper half of the
> tx rings could still generate interrupts during napi
> polling.
> Fixes: d4fd0404c1c9 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
> Signed-off-by: Claudiu Manoil <>

Applied and queued up for -stable, thank you.

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