This is a note to let you know that I've just added the patch titled
net/mlx5: Fix error print in case of IRQ request failed
to the 5.15-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-mlx5-fix-error-print-in-case-of-irq-request-fail.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3aebafe5fba999948f7fe6a958d7a0bc5476c69d
Author: Shay Drory <shayd@xxxxxxxxxx>
Date: Wed Nov 24 23:10:57 2021 +0200
net/mlx5: Fix error print in case of IRQ request failed
[ Upstream commit aa968f922039706f6d13e8870b49e424d0a8d9ad ]
In case IRQ layer failed to find or to request irq, the driver is
printing the first cpu of the provided affinity as part of the error
print. Empty affinity is a valid input for the IRQ layer, and it is
an error to call cpumask_first() on empty affinity.
Remove the first cpu print from the error message.
Fixes: c36326d38d93 ("net/mlx5: Round-Robin EQs over IRQs")
Signed-off-by: Shay Drory <shayd@xxxxxxxxxx>
Reviewed-by: Moshe Shemesh <moshe@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
index 763c83a023809..11f3649fdaab1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
@@ -346,8 +346,8 @@ static struct mlx5_irq *irq_pool_request_affinity(struct mlx5_irq_pool *pool,
new_irq = irq_pool_create_irq(pool, affinity);
if (IS_ERR(new_irq)) {
if (!least_loaded_irq) {
- mlx5_core_err(pool->dev, "Didn't find IRQ for cpu = %u\n",
- cpumask_first(affinity));
+ mlx5_core_err(pool->dev, "Didn't find a matching IRQ. err = %ld\n",
+ PTR_ERR(new_irq));
mutex_unlock(&pool->lock);
return new_irq;
}
