Re: [PATCH v2 1/2] PCI/portdrv: Add necessary wait for disabling hotplug events

[Feng Tang <feng.tang@xxxxxxxxxxxxxxxxx>]

On Wed, Feb 19, 2025 at 10:53:44AM +0800, Feng Tang wrote:
[...] 
> > 
> > And IIUC this will add a one second delay for ports that don't need
> > command completed events.  I don't think that's fair to those ports.
> 
> Good catch! So we should add a read of PCI_EXP_SLTCAP register and
> check if PCI_EXP_SLTCAP_HPC bit is set.

Maybe something like this?

	if (slot_cap & PCI_EXP_SLTCAP_HPC &&
	    !(slot_cap & PCI_EXP_SLTCAP_NCCS) &&
	    !pdev->broken_cmd_compl)
	    do_the_wait();

Thanks,
Feng