linux-kernel - Re: [PATCH 1/4] cxl/pci: Allocate irq vectors earlier in pci probe

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Message-ID: <20230511161306.00007941@Huawei.com>
Date:   Thu, 11 May 2023 16:13:06 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Vishal Verma <vishal.l.verma@...el.com>
CC:     Alison Schofield <alison.schofield@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Russ Weight <russell.h.weight@...el.com>
Subject: Re: [PATCH 1/4] cxl/pci: Allocate irq vectors earlier in pci probe

On Fri, 21 Apr 2023 21:09:25 -0600
Vishal Verma <vishal.l.verma@...el.com> wrote:

> From: Davidlohr Bueso <dave@...olabs.net>
> 
> Move the cxl_alloc_irq_vectors() call further up in the probing
> in order to allow for mailbox interrupt usage. No change in
> semantics.
> 
> Signed-off-by: Davidlohr Bueso <dave@...olabs.net>
> Link: https://lore.kernel.org/r/20230421092321.12741-2-dave@stgolabs.net
> Signed-off-by: Vishal Verma <vishal.l.verma@...el.com>

If it merges with this set to make life easier for picking it up
I'll repeat this here.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  drivers/cxl/pci.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
> index 60b23624d167..39b829a29f6c 100644
> --- a/drivers/cxl/pci.c
> +++ b/drivers/cxl/pci.c
> @@ -757,6 +757,10 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>  	if (rc)
>  		dev_dbg(&pdev->dev, "Failed to map RAS capability.\n");
>  
> +	rc = cxl_alloc_irq_vectors(pdev);
> +	if (rc)
> +		return rc;
> +
>  	rc = cxl_pci_setup_mailbox(cxlds);
>  	if (rc)
>  		return rc;
> @@ -777,10 +781,6 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>  	if (rc)
>  		return rc;
>  
> -	rc = cxl_alloc_irq_vectors(pdev);
> -	if (rc)
> -		return rc;
> -
>  	cxlmd = devm_cxl_add_memdev(cxlds);
>  	if (IS_ERR(cxlmd))
>  		return PTR_ERR(cxlmd);
>