Use struct_size() instead of hand-writing it. It is less verbose, more robust and more informative. Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> --- arch/x86/pci/irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index a498b847d740..0de436316a1d 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -136,14 +136,14 @@ static inline struct irq_routing_table *pirq_convert_irt_table(u8 *addr, if (ir->signature != IRT_SIGNATURE || !ir->used || ir->size < ir->used) return NULL; - size = sizeof(*ir) + ir->used * sizeof(ir->slots[0]); + size = struct_size(ir, slots, ir->used); if (size > limit - addr) return NULL; DBG(KERN_DEBUG "PCI: $IRT Interrupt Routing Table found at 0x%lx\n", __pa(ir)); - size = sizeof(*rt) + ir->used * sizeof(rt->slots[0]); + size = struct_size(rt, slots, ir->used); rt = kzalloc(size, GFP_KERNEL); if (!rt) return NULL; -- 2.34.1
