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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 <enelsonmoore@gmail.com> Link: https://patch.msgid.link/20260521001631.45434-8-enelsonmoore@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>