On Thu, Feb 11, 2021 at 05:13:19PM +0200, stef...@marvell.com wrote:
> From: Stefan Chulski <stef...@marvell.com>
>
> The condition should be skipped if CPU ID equal to nthreads.
> The patch doesn't fix any actual issue since
> nthreads = min_t(unsigned int, num_present_cpus(), MVPP2_MAX_THREADS).
> On all current Armada platforms, the number of CPU's is
> less than MVPP2_MAX_THREADS.
>
> Fixes: e531f76757eb ("net: mvpp2: handle cases where more CPUs are available
> than s/w threads")
> Reported-by: Russell King <rmk+ker...@armlinux.org.uk>
> Signed-off-by: Stefan Chulski <stef...@marvell.com>
Reviewed-by: Russell King <rmk+ker...@armlinux.org.uk>
Thanks.
> ---
> drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> index a07cf60..74613d3 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> @@ -1135,7 +1135,7 @@ static void mvpp2_interrupts_mask(void *arg)
> struct mvpp2_port *port = arg;
>
> /* If the thread isn't used, don't do anything */
> - if (smp_processor_id() > port->priv->nthreads)
> + if (smp_processor_id() >= port->priv->nthreads)
> return;
>
> mvpp2_thread_write(port->priv,
> @@ -1153,7 +1153,7 @@ static void mvpp2_interrupts_unmask(void *arg)
> u32 val;
>
> /* If the thread isn't used, don't do anything */
> - if (smp_processor_id() > port->priv->nthreads)
> + if (smp_processor_id() >= port->priv->nthreads)
> return;
>
> val = MVPP2_CAUSE_MISC_SUM_MASK |
> --
> 1.9.1
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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