linux-kernel - Re: [PATCH v2 1/1] cxl/mem: Fix for the index of Clear Event Record Handle

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Message-ID: <20240318105748.000072c5@Huawei.com>
Date: Mon, 18 Mar 2024 10:57:48 +0000
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Yuquan Wang <wangyuquan1236@...tium.com.cn>
CC: <ira.weiny@...el.com>, <dan.j.williams@...el.com>,
	<linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<qemu-devel@...gnu.org>, <chenbaozi@...tium.com.cn>
Subject: Re: [PATCH v2 1/1] cxl/mem: Fix for the index of Clear Event Record
 Handle

On Mon, 18 Mar 2024 10:29:28 +0800
Yuquan Wang <wangyuquan1236@...tium.com.cn> wrote:

> The dev_dbg info for Clear Event Records mailbox command would report
> the handle of the next record to clear not the current one.
> 
> This was because the index 'i' had incremented before printing the
> current handle value.
> 
> Signed-off-by: Yuquan Wang <wangyuquan1236@...tium.com.cn>
> ---
>  drivers/cxl/core/mbox.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index 9adda4795eb7..b810a6aa3010 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -915,7 +915,7 @@ static int cxl_clear_event_record(struct cxl_memdev_state *mds,
>  
>  		payload->handles[i++] = gen->hdr.handle;
>  		dev_dbg(mds->cxlds.dev, "Event log '%d': Clearing %u\n", log,
> -			le16_to_cpu(payload->handles[i]));
> +			le16_to_cpu(payload->handles[i-1]));
Trivial but needs spaces around the -. e.g.  [i - 1] 

Maybe Dan can fix up whilst applying.

Otherwise

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

>  
>  		if (i == max_handles) {
>  			payload->nr_recs = i;