Commit 553d66cb authored Apr 18, 2019 by Gustavo A. R. Silva Committed by Joerg Roedel Apr 26, 2019

iommu/vt-d: Use struct_size() helper



Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes, in particular in the
context in which this code is being used.

So, replace code of the following form:

size = sizeof(*info) + level * sizeof(info->path[0]);

with:

size = struct_size(info, path, level);

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent f7b0c4ce

drivers/iommu/dmar.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -145,7 +145,7 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)
		for (tmp = dev; tmp; tmp = tmp->bus->self)
		level++;

		size = sizeof(info) + level sizeof(info->path[0]);
		size = struct_size(info, path, level);
		if (size <= sizeof(dmar_pci_notify_info_buf)) {
		info = (struct dmar_pci_notify_info *)dmar_pci_notify_info_buf;
		} else {