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Date:   Thu, 8 Apr 2021 18:28:08 +0100
From:   Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To:     Ben Widawsky <ben.widawsky@intel.com>
CC:     <linux-cxl@vger.kernel.org>, <linux-pci@vger.kernel.org>,
        <linux-acpi@vger.kernel.org>, <ira.weiny@intel.com>,
        <vishal.l.verma@intel.com>, <alison.schofield@intel.com>,
        <dan.j.williams@intel.com>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 5/7] cxl/mem: Move device register setup
Message-ID: <20210408182808.00007f69@Huawei.com>
In-Reply-To: <20210407222625.320177-6-ben.widawsky@intel.com>
References: <20210407222625.320177-1-ben.widawsky@intel.com>
        <20210407222625.320177-6-ben.widawsky@intel.com>
Organization: Huawei Technologies Research and Development (UK) Ltd.
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On Wed, 7 Apr 2021 15:26:23 -0700
Ben Widawsky <ben.widawsky@intel.com> wrote:

> Support expansion of register block types that the driver will attempt
> to recognize by pulling the code up into the register block scanning
> loop. Subsequent code can easily add in new register block types with
> this.
> 
> Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>

Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>>

> ---
>  drivers/cxl/mem.c | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
> index 60b95c524c3e..49f651694cb0 100644
> --- a/drivers/cxl/mem.c
> +++ b/drivers/cxl/mem.c
> @@ -1020,6 +1020,15 @@ static int cxl_mem_setup_regs(struct cxl_mem *cxlm)
>  			base = cxl_mem_map_regblock(cxlm, reg_lo, reg_hi);
>  			if (IS_ERR(base))
>  				return PTR_ERR(base);
> +
> +			cxl_setup_device_regs(dev, base, &regs->device_regs);
> +			if (!regs->status || !regs->mbox || !regs->memdev) {
> +				dev_err(dev, "registers not found: %s%s%s\n",
> +						!regs->status ? "status " : "",
> +						!regs->mbox ? "mbox " : "",
> +						!regs->memdev ? "memdev" : "");
> +				return -ENXIO;
> +			}
>  			break;
>  		}
>  	}
> @@ -1029,16 +1038,6 @@ static int cxl_mem_setup_regs(struct cxl_mem *cxlm)
>  		return -ENXIO;
>  	}
>  
> -	cxl_setup_device_regs(dev, base, &regs->device_regs);
> -
> -	if (!regs->status || !regs->mbox || !regs->memdev) {
> -		dev_err(dev, "registers not found: %s%s%s\n",
> -			!regs->status ? "status " : "",
> -			!regs->mbox ? "mbox " : "",
> -			!regs->memdev ? "memdev" : "");
> -		return -ENXIO;
> -	}
> -
>  	return 0;
>  }
>