[net-next] net: mvpp2: fix interrupt mask/unmask skip condition

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>
---
 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

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.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!