Re: [PATCH v3] net: wwan: iosm: Fix hibernation by re-binding the driver around it

[Paolo Abeni]

On 1/9/25 12:33 AM, Maciej S. Szmigiero wrote:
 @@ -530,3 +531,56 @@ void ipc_pcie_kfree_skb(struct iosm_pcie
*ipc_pcie, struct sk_buff *skb)
>  	IPC_CB(skb)->mapping = 0;
>  	dev_kfree_skb(skb);
>  }
> +
> +static int pm_notify(struct notifier_block *nb, unsigned long mode, void *_unused)
> +{
> +	if (mode == PM_HIBERNATION_PREPARE || mode == PM_RESTORE_PREPARE) {
> +		if (pci_registered) {

Out of sheer ignorance on my side, why 'mode == PM_RESTORE_PREPARE' is
required above? Isn't the driver already unregistered by the previous
PM_HIBERNATION_PREPARE call?

Thanks,

Paolo