linux-kernel - [PATCH net-next 1/2] net: stmmac: intel: Fix IRQ vector leak

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Message-Id: <20260210-flo-net-stmmac-default-affinity-core-v1-1-4e76612444e1@siemens.com>
Date: Tue, 10 Feb 2026 17:28:14 +0100
From: Florian Bezdeka <florian.bezdeka@...mens.com>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Ong Boon Leong <boon.leong.ong@...el.com>, 
 Voon Weifeng <weifeng.voon@...el.com>
Cc: netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Florian Bezdeka <florian.bezdeka@...mens.com>
Subject: [PATCH net-next 1/2] net: stmmac: intel: Fix IRQ vector leak

The IRQ vectors allocated in stmmac_config_multi_msi() or
stmmac_config_single_msi() where never cleaned up.

Fixes: b42446b9b37b ("stmmac: intel: add support for multi-vector msi and msi-x")
Signed-off-by: Florian Bezdeka <florian.bezdeka@...mens.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
index aad1be1ec4c11c3da8a1f56cdc200250b7f2d1d9..48e6d61064bd57afe90d3b83cbb3f2fe5351166a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -1327,6 +1327,7 @@ static int intel_eth_pci_probe(struct pci_dev *pdev,
 err_alloc_irq:
 	clk_disable_unprepare(plat->stmmac_clk);
 	clk_unregister_fixed_rate(plat->stmmac_clk);
+	pci_free_irq_vectors(pdev);
 	return ret;
 }

@@ -1346,6 +1347,7 @@ static void intel_eth_pci_remove(struct pci_dev *pdev)

 	clk_disable_unprepare(priv->plat->stmmac_clk);
 	clk_unregister_fixed_rate(priv->plat->stmmac_clk);
+	pci_free_irq_vectors(pdev);
 }

 #define PCI_DEVICE_ID_INTEL_QUARK		0x0937

-- 
2.53.0