Commit e67cc80b50f5 for kernel

commit e67cc80b50f587cd1d8ffc8989dcec3291720bc3
Author: Aditya Garg <gargaditya@linux.microsoft.com>
Date:   Mon Jul 27 04:37:59 2026 -0700

    net: mana: Return error code from mana_create_rxq()

    mana_create_rxq() returns a struct mana_rxq pointer and returns NULL on
    any failure. The caller, mana_add_rx_queues(), cannot tell what went
    wrong and hardcodes the error as -ENOMEM. As a result the actual failure
    reported by the lower layers (for example -EPROTO from a failed HW
    request) is masked and every RX queue creation failure looks like an
    out-of-memory error.

    Return an ERR_PTR() encoded error code from mana_create_rxq() on failure
    instead of NULL. The caller now propagates the returned error code
    directly instead of substituting -ENOMEM.

    Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
    Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com>
    Reviewed-by: Joe Damato <joe@dama.to>
    Link: https://patch.msgid.link/20260727113759.2881500-1-gargaditya@linux.microsoft.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 9d9bfd116dab..92bb55935c1c 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2829,7 +2829,7 @@ static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc,

 	rxq = kvzalloc_flex(*rxq, rx_oobs, apc->rx_queue_size);
 	if (!rxq)
-		return NULL;
+		return ERR_PTR(-ENOMEM);

 	rxq->ndev = ndev;
 	rxq->num_rx_buf = apc->rx_queue_size;
@@ -2930,7 +2930,7 @@ static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc,

 	mana_destroy_rxq(apc, rxq, false);

-	return NULL;
+	return ERR_PTR(err);
 }

 static void mana_create_rxq_debugfs(struct mana_port_context *apc, int idx)
@@ -2964,8 +2964,8 @@ static int mana_add_rx_queues(struct mana_port_context *apc,

 	for (i = 0; i < apc->num_queues; i++) {
 		rxq = mana_create_rxq(apc, i, &apc->eqs[i], ndev);
-		if (!rxq) {
-			err = -ENOMEM;
+		if (IS_ERR(rxq)) {
+			err = PTR_ERR(rxq);
 			netdev_err(ndev, "Failed to create rxq %d : %d\n", i, err);
 			goto out;
 		}