D Scott Phillips <scott@xxxxxxxxxxxxxxxxxxxxxx> writes:
> Starting from the introduction of the attention callback in acpiphp, a
> non-zero struct module *owner field has been required in
> acpiphp_register_attention(). Then intent seemed to be that the core code
> could then hold a refcount on the module while invoking a callback.
>
> This check accidentally precludes the possiblity of attention callbacks to
> drivers which are built-in.
>
> Remove the check on `struct module *owner` in acpiphp_register_attention()
> so that attention callbacks can also be registered from built-in drivers.
Hi Bjorn, ping on these, thanks
Scott
>
> Signed-off-by: D Scott Phillips <scott@xxxxxxxxxxxxxxxxxxxxxx>
> ---
> Changes since v1:
> - new patch in the series
>
> drivers/pci/hotplug/acpiphp_core.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
> index c02257f4b61c4..9dad14e80bcf2 100644
> --- a/drivers/pci/hotplug/acpiphp_core.c
> +++ b/drivers/pci/hotplug/acpiphp_core.c
> @@ -78,8 +78,7 @@ int acpiphp_register_attention(struct acpiphp_attention_info *info)
> {
> int retval = -EINVAL;
>
> - if (info && info->owner && info->set_attn &&
> - info->get_attn && !attention_info) {
> + if (info && info->set_attn && info->get_attn && !attention_info) {
> retval = 0;
> attention_info = info;
> }
> --
> 2.41.0
