linux-kernel - Re: [PATCH v2 2/4] s390/pci: only add specific device in zpci_bus_scan

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Message-ID: <4814c9d9-d79b-4634-bfe0-01d05c727ac9@linux.ibm.com>
Date:   Thu, 9 Mar 2023 13:36:36 -0500
From:   Matthew Rosato <mjrosato@...ux.ibm.com>
To:     Niklas Schnelle <schnelle@...ux.ibm.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lukas Wunner <lukas@...ner.de>
Cc:     Gerd Bayer <gbayer@...ux.ibm.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 2/4] s390/pci: only add specific device in
 zpci_bus_scan_device()

On 3/6/23 10:10 AM, Niklas Schnelle wrote:
> As the name suggests zpci_bus_scan_device() is used to scan a specific
> device and thus pci_bus_add_device() for that device is sufficient.
> Furthermore move this call inside the rescan/remove locking.
> 
> Signed-off-by: Niklas Schnelle <schnelle@...ux.ibm.com>

I think a suggested by tag from Bjorn is appropriate here

Otherwise:

Reviewed-by: Matthew Rosato <mjrosato@...ux.ibm.com>

> ---
>  arch/s390/pci/pci_bus.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/s390/pci/pci_bus.c b/arch/s390/pci/pci_bus.c
> index a99926af2b69..ae46c280b35f 100644
> --- a/arch/s390/pci/pci_bus.c
> +++ b/arch/s390/pci/pci_bus.c
> @@ -85,9 +85,8 @@ int zpci_bus_scan_device(struct zpci_dev *zdev)
>  	if (!pdev)
>  		return -ENODEV;
>  
> -	pci_bus_add_device(pdev);
>  	pci_lock_rescan_remove();
> -	pci_bus_add_devices(zdev->zbus->bus);
> +	pci_bus_add_device(pdev);
>  	pci_unlock_rescan_remove();
>  
>  	return 0;