From: Ethan Nelson-Moore Date: Thu, 21 May 2026 00:16:19 +0000 (-0700) Subject: net: arcnet: com20020-pci: avoid -Wformat-truncation warning X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=eb8ffe14a554808eb68cf050ba5343dbbe15bb54;p=thirdparty%2Fkernel%2Flinux.git net: arcnet: com20020-pci: avoid -Wformat-truncation warning When compiling the com20020-pci driver with W=1, I received the following warning: drivers/net/arcnet/com20020-pci.c:224:71: warning: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 10 and 11 [-Wformat-truncation=] 224 | snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i); In reality, this does not represent a problem, because i is bounded by the .devcount field in struct com20020_pci_card_info, which is statically defined for each card and very small. Quiet the invalid warning by changing the type of i and the .devcount field to be narrower. Signed-off-by: Ethan Nelson-Moore Link: https://patch.msgid.link/20260521001631.45434-8-enelsonmoore@gmail.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c index 03bc51423a55..19cd36cba64d 100644 --- a/drivers/net/arcnet/com20020-pci.c +++ b/drivers/net/arcnet/com20020-pci.c @@ -127,7 +127,8 @@ static int com20020pci_probe(struct pci_dev *pdev, struct net_device *dev; struct arcnet_local *lp; struct com20020_priv *priv; - int i, ioaddr, ret; + int ioaddr, ret; + u8 i; struct resource *r; ret = 0; diff --git a/drivers/net/arcnet/com20020.h b/drivers/net/arcnet/com20020.h index e7aac0e81a13..68f49fdc2c28 100644 --- a/drivers/net/arcnet/com20020.h +++ b/drivers/net/arcnet/com20020.h @@ -50,7 +50,7 @@ struct com20020_pci_channel_map { struct com20020_pci_card_info { const char *name; - int devcount; + u8 devcount; struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS]; struct com20020_pci_channel_map misc_map;