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Message-ID: <52403478.6010305@atmel.com>
Date: Mon, 23 Sep 2013 14:30:48 +0200
From: Nicolas Ferre <nicolas.ferre@...el.com>
To: Russell King <rmk+kernel@....linux.org.uk>,
<alsa-devel@...a-project.org>, <b43-dev@...ts.infradead.org>,
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<linux-nvme@...ts.infradead.org>, <linux-omap@...r.kernel.org>,
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<linux-samsung-soc@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
<linux-tegra@...r.kernel.org>, <linux-usb@...r.kernel.org>,
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Solarflare linux maintainers <linux-net-drivers@...arflare.com>,
<uclinux-dist-devel@...ckfin.uclinux.org>
CC: Kukjin Kim <kgene.kim@...sung.com>,
Stephen Warren <swarren@...dotorg.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Felipe Balbi <balbi@...com>,
Alan Stern <stern@...land.harvard.edu>
Subject: Re: [PATCH 36/51] DMA-API: usb: use dma_set_coherent_mask()
On 20/09/2013 00:01, Russell King :
> The correct way for a driver to specify the coherent DMA mask is
> not to directly access the field in the struct device, but to use
> dma_set_coherent_mask(). Only arch and bus code should access this
> member directly.
>
> Convert all direct write accesses to using the correct API.
>
> Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
> ---
> drivers/usb/chipidea/ci_hdrc_imx.c | 5 +++--
> drivers/usb/dwc3/dwc3-exynos.c | 5 +++--
> drivers/usb/gadget/lpc32xx_udc.c | 4 +++-
> drivers/usb/host/ehci-atmel.c | 5 +++--
For Atmel driver:
Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
[..]
> diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
> index 3b645ff..5831a88 100644
> --- a/drivers/usb/host/ehci-atmel.c
> +++ b/drivers/usb/host/ehci-atmel.c
> @@ -92,8 +92,9 @@ static int ehci_atmel_drv_probe(struct platform_device *pdev)
> */
> if (!pdev->dev.dma_mask)
> pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
> - if (!pdev->dev.coherent_dma_mask)
> - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
> + retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
> + if (retval)
> + goto fail_create_hcd;
>
> hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
> if (!hcd) {
[..]
Thanks,
--
Nicolas Ferre
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