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Date: Mon, 09 Oct 2023 23:41:01 +0000
From: Justin Stitt <>
To: Jesse Brandeburg <>, Tony Nguyen <>, 
	"David S. Miller" <>, Eric Dumazet <>, 
	Jakub Kicinski <>, Paolo Abeni <>
	Justin Stitt <>
Subject: [PATCH] e100: replace deprecated strncpy with strscpy

`strncpy` is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string

The "...-1" pattern makes it evident that netdev->name is expected to be

Meanwhile, it seems NUL-padding is not required due to alloc_etherdev
zero-allocating the buffer.

Considering the above, a suitable replacement is `strscpy` [2] due to
the fact that it guarantees NUL-termination on the destination buffer
without unnecessarily NUL-padding.

This is in line with other uses of strscpy on netdev->name:
$ rg "strscpy\(netdev\->name.*pci.*"

7455:   strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name));

10839:  strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name));

Link: [1]
Link: [2]
Signed-off-by: Justin Stitt <>
Note: build-tested only.
 drivers/net/ethernet/intel/e100.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index d3fdc290937f..01f0f12035ca 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -2841,7 +2841,7 @@ static int e100_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	netdev->netdev_ops = &e100_netdev_ops;
 	netdev->ethtool_ops = &e100_ethtool_ops;
 	netdev->watchdog_timeo = E100_WATCHDOG_PERIOD;
-	strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+	strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
 	nic = netdev_priv(netdev);
 	netif_napi_add_weight(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT);

base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2
change-id: 20231009-strncpy-drivers-net-ethernet-intel-e100-c-4547179d9f2c

Best regards,
Justin Stitt <>

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