linux-kernel - Re: [PATCH] usb: mtu3: fix dma_addr

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Date:   Fri, 3 Nov 2017 07:54:18 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Arnd Bergmann <arnd@...db.de>
CC:     Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: mtu3: fix dma_addr_t printk output again

hi,
On Thu, 2017-11-02 at 15:30 +0100, Arnd Bergmann wrote:
> The support for 36-bit addresses originally came with an incorrect
> printk format for dma addresses. Felipe changed the format string it
> while applying, but the result was still incorrect, since we now have
> to pass a pointer to the address instead of the integer value:
> 
> drivers/usb/mtu3/mtu3_qmu.c: In function 'mtu3_prepare_tx_gpd':
> drivers/usb/mtu3/mtu3_qmu.c:261:25: error: format '%p' expects argument of type 'void *', but argument 7 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
> drivers/usb/mtu3/mtu3_qmu.c: In function 'mtu3_prepare_rx_gpd':
> drivers/usb/mtu3/mtu3_qmu.c:300:25: error: format '%p' expects argument of type 'void *', but argument 7 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
> 
> This fixes the printk argument accordingly.
> 
> Fixes: 1a46dfea0841 ("usb: mtu3: support 36-bit DMA address")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/usb/mtu3/mtu3_qmu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c
> index 42145a3f1422..0b4b412b1d0d 100644
> --- a/drivers/usb/mtu3/mtu3_qmu.c
> +++ b/drivers/usb/mtu3/mtu3_qmu.c
> @@ -259,7 +259,7 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq)
>  	enq = advance_enq_gpd(ring);
>  	enq_dma = gpd_virt_to_dma(ring, enq);
>  	dev_dbg(mep->mtu->dev, "TX-EP%d queue gpd=%p, enq=%p, qdma=%pad\n",
> -		mep->epnum, gpd, enq, enq_dma);
> +		mep->epnum, gpd, enq, &enq_dma);
>  
>  	enq->flag &= ~GPD_FLAGS_HWO;
>  	gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma));
> @@ -298,7 +298,7 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq)
>  	enq = advance_enq_gpd(ring);
>  	enq_dma = gpd_virt_to_dma(ring, enq);
>  	dev_dbg(mep->mtu->dev, "RX-EP%d queue gpd=%p, enq=%p, qdma=%pad\n",
> -		mep->epnum, gpd, enq, enq_dma);
> +		mep->epnum, gpd, enq, &enq_dma);
>  
>  	enq->flag &= ~GPD_FLAGS_HWO;
>  	gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma));

Thanks.

Acked-by: Chunfeng Yun <chunfeng.yun@...iatek.com>