On 5/28/19 5:54 PM, Joe Perches wrote:
> On Tue, 2019-05-28 at 13:23 -0700, tip-bot for Geert Uytterhoeven wrote:
>> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> []
>> @@ -139,7 +139,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle
>> *fwnode, int size,
>>
>> domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
>> GFP_KERNEL, of_node_to_nid(of_node));
>> - if (WARN_ON(!domain))
>> + if (!domain)
>> return NULL;
>>
>> if (fwnode && is_fwnode_irqchip(fwnode)) {
>
> This could also use the struct_size macro if desired.
>
ACK this.
> Oddly, this seems to reduce object size (gcc 8.3.0)
> but it's probably unrelated.
>
> ---
> kernel/irq/irqdomain.c | 2 +-.
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index e7d17cc3a3d7..93a984a82154 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -137,7 +137,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle
> *fwnode, int size,
>
> static atomic_t unknown_domains;
>
> - domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
> + domain = kzalloc_node(struct_size(domain, linear_revmap, size),
> GFP_KERNEL, of_node_to_nid(of_node));
> if (!domain)
> return NULL;
>
>
--
Gustavo
