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From: Vinod Koul <vkoul@kernel.org>
To: coolrrsh@gmail.com
Cc: fenghua.yu@intel.com, dave.jiang@intel.com,
	dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-kernel-mentees@lists.linuxfoundation.org
Subject: Re: [PATCH v2] dmaengine: idxd: Remove redundant memset() for eventlog allocation
Date: Wed, 4 Oct 2023 19:18:58 +0530	[thread overview]
Message-ID: <ZR1tSu0IQHFNuqMo@matsya> (raw)
In-Reply-To: <20230829180027.6357-1-coolrrsh@gmail.com>

On 29-08-23, 23:30, coolrrsh@gmail.com wrote:
> From: Rajeshwar R Shinde <coolrrsh@gmail.com>
> 
> dma_alloc_coherent function already zeroes the array 'addr'.
> So, memset function call is not needed.
> 
> This fixes warning such as:
> drivers/dma/idxd/device.c:783:8-26:
> WARNING: dma_alloc_coherent used in addr already zeroes out memory,
> so memset is not needed.

Already fixes by 4ca95a5b220c901f9c2402532ef78bf5aaf7d35d

> 
> Signed-off-by: Rajeshwar R Shinde <coolrrsh@gmail.com>
> ---
> v1->v2
> Renamed the subject line
> ---
>  drivers/dma/idxd/device.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
> index 5abbcc61c528..7c74bc60f582 100644
> --- a/drivers/dma/idxd/device.c
> +++ b/drivers/dma/idxd/device.c
> @@ -786,8 +786,6 @@ static int idxd_device_evl_setup(struct idxd_device *idxd)
>  		goto err_alloc;
>  	}
>  
> -	memset(addr, 0, size);
> -
>  	spin_lock(&evl->lock);
>  	evl->log = addr;
>  	evl->dma = dma_addr;
> -- 
> 2.25.1

-- 
~Vinod

      parent reply	other threads:[~2023-10-04 13:49 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-29 18:00 [PATCH v2] dmaengine: idxd: Remove redundant memset() for eventlog allocation coolrrsh
2023-08-29 18:11 ` Dave Jiang
2023-10-04 13:48 ` Vinod Koul [this message]

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