Re: [net-next] net: mvpp2: fix interrupt mask/unmask skip condition
From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Date: 2021-02-11 17:53:23
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On Thu, Feb 11, 2021 at 05:13:19PM +0200, stefanc@marvell.com wrote:
From: Stefan Chulski <redacted>
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 <redacted>
Signed-off-by: Stefan Chulski <redacted>Reviewed-by: Russell King <redacted> Thanks.
quoted hunk ↗ jump to hunk
--- 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
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