From: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
To: Sunil Goutham <sgoutham@marvell.com>,
Linu Cherian <lcherian@marvell.com>,
Geetha sowjanya <gakula@marvell.com>,
Jerin Jacob <jerinj@marvell.com>, hariprasad <hkelam@marvell.com>,
Subbaraya Sundeep <sbhatta@marvell.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Nithya Mani <nmani@marvell.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: dan.carpenter@linaro.org, kernel-janitors@vger.kernel.org,
error27@gmail.com, harshit.m.mogalapalli@oracle.com
Subject: [PATCH v2] Octeontx2-af: Fix pci_alloc_irq_vectors() return value check
Date: Wed, 15 Oct 2025 02:01:17 -0700 [thread overview]
Message-ID: <20251015090117.1557870-1-harshit.m.mogalapalli@oracle.com> (raw)
In cgx_probe() when pci_alloc_irq_vectors() fails the error value will
be negative and that check is sufficient.
err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSIX);
if (err < 0 || err != nvec) {
...
}
When pci_alloc_irq_vectors() fail to allocate nvec number of vectors,
-ENOSPC is returned, so it would be safe to remove the check that
compares err with nvec.
Fixes: 1463f382f58d ("octeontx2-af: Add support for CGX link management")
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
---
Only compile tested.
v1->v2: Improve the commit message
---
drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index d374a4454836..f4d5a3c05fa4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -1993,7 +1993,7 @@ static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id)
nvec = pci_msix_vec_count(cgx->pdev);
err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSIX);
- if (err < 0 || err != nvec) {
+ if (err < 0) {
dev_err(dev, "Request for %d msix vectors failed, err %d\n",
nvec, err);
goto err_release_regions;
--
2.39.3
next reply other threads:[~2025-10-15 9:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-15 9:01 Harshit Mogalapalli [this message]
2025-10-15 16:15 ` [PATCH v2] Octeontx2-af: Fix pci_alloc_irq_vectors() return value check Simon Horman
2025-10-16 22:50 ` patchwork-bot+netdevbpf
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