linux-kernel - [PATCH 5.4 153/177] gve: Update mgmt_msix_idx if num

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Date:   Mon, 31 May 2021 15:15:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Awogbemila <awogbemila@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 153/177] gve: Update mgmt_msix_idx if num_ntfy changes

From: David Awogbemila <awogbemila@...gle.com>

[ Upstream commit e96b491a0ffa35a8a9607c193fa4d894ca9fb32f ]

If we do not get the expected number of vectors from
pci_enable_msix_range, we update priv->num_ntfy_blks but not
priv->mgmt_msix_idx. This patch fixes this so that priv->mgmt_msix_idx
is updated accordingly.

Fixes: f5cedc84a30d ("gve: Add transmit and receive support")
Signed-off-by: David Awogbemila <awogbemila@...gle.com>
Acked-by: Willem de Bruijn <willemb@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/google/gve/gve_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 9b7a8db9860f..9c74251f9b6a 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -161,6 +161,7 @@ static int gve_alloc_notify_blocks(struct gve_priv *priv)
 		int vecs_left = new_num_ntfy_blks % 2;
 
 		priv->num_ntfy_blks = new_num_ntfy_blks;
+		priv->mgmt_msix_idx = priv->num_ntfy_blks;
 		priv->tx_cfg.max_queues = min_t(int, priv->tx_cfg.max_queues,
 						vecs_per_type);
 		priv->rx_cfg.max_queues = min_t(int, priv->rx_cfg.max_queues,
-- 
2.30.2