6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arnd Bergmann arnd@arndb.de
[ Upstream commit 33647d0be323f9e2f27cd1e86de5cfd965cec654 ]
iommu_device_sysfs_add() requires a constant format string, otherwise a W=1 build produces a warning:
drivers/iommu/ipmmu-vmsa.c:1093:62: error: format string is not a string literal (potentially insecure) [-Werror,-Wformat-security] 1093 | ret = iommu_device_sysfs_add(&mmu->iommu, &pdev->dev, NULL, dev_name(&pdev->dev)); | ^~~~~~~~~~~~~~~~~~~~ drivers/iommu/ipmmu-vmsa.c:1093:62: note: treat the string as an argument to avoid this 1093 | ret = iommu_device_sysfs_add(&mmu->iommu, &pdev->dev, NULL, dev_name(&pdev->dev)); | ^ | "%s",
This was an old bug but I saw it now because the code was changed as part of commit d9d3cede4167 ("iommu/ipmmu-vmsa: Register in a sensible order").
Fixes: 7af9a5fdb9e0 ("iommu/ipmmu-vmsa: Use iommu_device_sysfs_add()/remove()") Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Jason Gunthorpe jgg@nvidia.com Link: https://lore.kernel.org/r/20250423164006.2661372-1-arnd@kernel.org Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/ipmmu-vmsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ff55b8c307126..ae69691471e9f 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -1087,7 +1087,7 @@ static int ipmmu_probe(struct platform_device *pdev) * - R-Car Gen3 IPMMU (leaf devices only - skip root IPMMU-MM device) */ if (!mmu->features->has_cache_leaf_nodes || !ipmmu_is_root(mmu)) { - ret = iommu_device_sysfs_add(&mmu->iommu, &pdev->dev, NULL, + ret = iommu_device_sysfs_add(&mmu->iommu, &pdev->dev, NULL, "%s", dev_name(&pdev->dev)); if (ret) return ret;