linux-kernel - Re: [PATCH 1/3] net: mediatek: use dma_addr

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Message-ID: <56E6FC76.8010409@openwrt.org>
Date:	Mon, 14 Mar 2016 19:01:26 +0100
From:	John Crispin <blogic@...nwrt.org>
To:	Arnd Bergmann <arnd@...db.de>,
	"David S. Miller" <davem@...emloft.net>
Cc:	Felix Fietkau <nbd@...nwrt.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/3] net: mediatek: use dma_addr_t correctly



On 14/03/2016 15:07, Arnd Bergmann wrote:
> dma_alloc_coherent() expects a dma_addr_t pointer as its argument,
> not an 'unsigned int', and gcc correctly warns about broken
> code in the mtk_init_fq_dma function:
> 
> drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function 'mtk_init_fq_dma':
> drivers/net/ethernet/mediatek/mtk_eth_soc.c:463:13: error: passing argument 3 of 'dma_alloc_coherent' from incompatible pointer type [-Werror=incompatible-pointer-types]
> 
> This changes the type of the local variable to dma_addr_t.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

thanks for the fixes



> ---
>  drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index ba3afa5d4640..3e42204adfe5 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -453,7 +453,7 @@ static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd,
>  /* the qdma core needs scratch memory to be setup */
>  static int mtk_init_fq_dma(struct mtk_eth *eth)
>  {
> -	unsigned int phy_ring_head, phy_ring_tail;
> +	dma_addr_t phy_ring_head, phy_ring_tail;
>  	int cnt = MTK_DMA_SIZE;
>  	dma_addr_t dma_addr;
>  	int i;
>