This is a note to let you know that I've just added the patch titled
net: mvneta: fix txq_map in case of txq_number==1
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mvneta-fix-txq_map-in-case-of-txq_number-1.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f9e8a622e20536ae06e72b75b9d71051521991fb
Author: Klaus Kudielka <klaus.kudielka@xxxxxxxxx>
Date: Wed Jul 5 07:37:12 2023 +0200
net: mvneta: fix txq_map in case of txq_number==1
[ Upstream commit 21327f81db6337c8843ce755b01523c7d3df715b ]
If we boot with mvneta.txq_number=1, the txq_map is set incorrectly:
MVNETA_CPU_TXQ_ACCESS(1) refers to TX queue 1, but only TX queue 0 is
initialized. Fix this.
Fixes: 50bf8cb6fc9c ("net: mvneta: Configure XPS support")
Signed-off-by: Klaus Kudielka <klaus.kudielka@xxxxxxxxx>
Reviewed-by: Michal Kubiak <michal.kubiak@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230705053712.3914-1-klaus.kudielka@xxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index f1a4b11ce0d19..512f9cd68070a 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1415,7 +1415,7 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
*/
if (txq_number == 1)
txq_map = (cpu == pp->rxq_def) ?
- MVNETA_CPU_TXQ_ACCESS(1) : 0;
+ MVNETA_CPU_TXQ_ACCESS(0) : 0;
} else {
txq_map = MVNETA_CPU_TXQ_ACCESS_ALL_MASK;
@@ -3665,7 +3665,7 @@ static void mvneta_percpu_elect(struct mvneta_port *pp)
*/
if (txq_number == 1)
txq_map = (cpu == elected_cpu) ?
- MVNETA_CPU_TXQ_ACCESS(1) : 0;
+ MVNETA_CPU_TXQ_ACCESS(0) : 0;
else
txq_map = mvreg_read(pp, MVNETA_CPU_MAP(cpu)) &
MVNETA_CPU_TXQ_ACCESS_ALL_MASK;
