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Message-ID: <3935e09b-5dfc-488f-84fb-69fb5707b1cc@intel.com>
Date: Wed, 27 Mar 2024 10:38:59 -0700
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Subject: Re: [PATCH 11/26] cxl/pci: Delay event buffer allocation
Content-Language: en-US
To: Ira Weiny <ira.weiny@intel.com>, Fan Ni <fan.ni@samsung.com>,
 Jonathan Cameron <Jonathan.Cameron@huawei.com>,
 Navneet Singh <navneet.singh@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
 Davidlohr Bueso <dave@stgolabs.net>,
 Alison Schofield <alison.schofield@intel.com>,
 Vishal Verma <vishal.l.verma@intel.com>, linux-btrfs@vger.kernel.org,
 linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20240324-dcd-type2-upstream-v1-0-b7b00d623625@intel.com>
 <20240324-dcd-type2-upstream-v1-11-b7b00d623625@intel.com>
From: Dave Jiang <dave.jiang@intel.com>
In-Reply-To: <20240324-dcd-type2-upstream-v1-11-b7b00d623625@intel.com>
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On 3/24/24 4:18 PM, Ira Weiny wrote:
> The event buffer does not need to be allocated if something has failed
> in setting up event irq's.
> 
> In prep for adjusting event configuration for DCD events move the buffer
> allocation to the end of the event configuration.
> 
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>

Reviewed-by: Dave Jiang <dave.jiang@intel.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 cedd9b05f129..ccaf4ad26a4f 100644
> --- a/drivers/cxl/pci.c
> +++ b/drivers/cxl/pci.c
> @@ -756,10 +756,6 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
>  		return 0;
>  	}
>  
> -	rc = cxl_mem_alloc_event_buf(mds);
> -	if (rc)
> -		return rc;
> -
>  	rc = cxl_event_get_int_policy(mds, &policy);
>  	if (rc)
>  		return rc;
> @@ -777,6 +773,10 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
>  	if (rc)
>  		return rc;
>  
> +	rc = cxl_mem_alloc_event_buf(mds);
> +	if (rc)
> +		return rc;
> +
>  	rc = cxl_event_irqsetup(mds, &policy);
>  	if (rc)
>  		return rc;
>