netdev - Re: [PATCH 2/3] ath10k: use dma_zalloc

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Date:   Mon, 23 Jan 2017 15:19:29 -0800
From:   Joe Perches <joe@...ches.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Kalle Valo <kvalo@....qualcomm.com>
Cc:     ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] ath10k: use dma_zalloc_coherent()

On Mon, 2017-01-23 at 15:04 +0000, Srinivas Kandagatla wrote:
> use dma_zalloc_coherent() instead of dma_alloc_coherent and memset().
[]
> diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
[]
> @@ -896,7 +896,7 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
>  	 */
>  	alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
>  
> -	data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
> +	data_buf = (unsigned char *)dma_zalloc_coherent(ar->dev,
>  						       alloc_nbytes,
>  						       &ce_data_base,
>  						       GFP_ATOMIC);

trivia:

Nicer to realign arguments and remove the unnecessary cast.

Perhaps:

	data_buf = dma_zalloc_coherent(ar->dev, alloc_nbytes, &ce_data_base,
				       GFP_ATOMIC);