linux-kernel - [PATCH] hwrng: cavium: fix possible NULL pointer dereference

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Date:   Fri, 18 Mar 2022 11:24:32 +0800
From:   Haowen Bai <baihaowen@...zu.com>
To:     <mpm@...enic.com>, <herbert@...dor.apana.org.au>,
        <sgoutham@...vell.com>
CC:     <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Haowen Bai <baihaowen@...zu.com>
Subject: [PATCH] hwrng: cavium: fix possible NULL pointer dereference

pdev is NULL but dereference to pdev->dev

Signed-off-by: Haowen Bai <baihaowen@...zu.com>
---
 drivers/char/hw_random/cavium-rng-vf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/cavium-rng-vf.c b/drivers/char/hw_random/cavium-rng-vf.c
index 6f66919..bffcb01 100644
--- a/drivers/char/hw_random/cavium-rng-vf.c
+++ b/drivers/char/hw_random/cavium-rng-vf.c
@@ -179,7 +179,7 @@ static int cavium_map_pf_regs(struct cavium_rng *rng)
 	pdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
 			      PCI_DEVID_CAVIUM_RNG_PF, NULL);
 	if (!pdev) {
-		dev_err(&pdev->dev, "Cannot find RNG PF device\n");
+		printk(KERN_ERR "Cannot find RNG PF device\n");
 		return -EIO;
 	}
 
-- 
2.7.4