netdev - [net PATCH 3/7] octeontx2-af: Fixes klockwork issues in ptp.c

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Date: Mon, 24 Jun 2024 16:06:34 +0530
From: Suman Ghosh <sumang@...vell.com>
To: <sgoutham@...vell.com>, <gakula@...vell.com>, <sbhatta@...vell.com>,
        <hkelam@...vell.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <lcherian@...vell.com>,
        <jerinj@...vell.com>, <markus.elfring@....de>
CC: Suman Ghosh <sumang@...vell.com>
Subject: [net PATCH 3/7] octeontx2-af: Fixes klockwork issues in ptp.c

These are not real issues but sanity checks.

Fixes: 4086f2a06a35 ("octeontx2-af: Add support for Marvell PTP coprocessor")
Signed-off-by: Suman Ghosh <sumang@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/ptp.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
index bcc96eed2481..0be5d22d213b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
@@ -517,6 +517,7 @@ static int ptp_pps_on(struct ptp *ptp, int on, u64 period)
 static int ptp_probe(struct pci_dev *pdev,
 		     const struct pci_device_id *ent)
 {
+	void __iomem * const *base;
 	struct ptp *ptp;
 	int err;
 
@@ -536,7 +537,15 @@ static int ptp_probe(struct pci_dev *pdev,
 	if (err)
 		goto error_free;
 
-	ptp->reg_base = pcim_iomap_table(pdev)[PCI_PTP_BAR_NO];
+	base = pcim_iomap_table(pdev);
+	if (!base)
+		goto error_free;
+
+	ptp->reg_base = base[PCI_PTP_BAR_NO];
+	if (!ptp->reg_base) {
+		err = -ENODEV;
+		goto error_free;
+	}
 
 	pci_set_drvdata(pdev, ptp);
 	if (!first_ptp_block)
-- 
2.25.1