linux-kernel - Re: [PATCH 2/2] usb: dwc2: fixes host

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Date:   Mon, 14 Nov 2016 14:53:18 -0800
From:   John Youn <John.Youn@...opsys.com>
To:     Christian Lamparter <chunkeey@...glemail.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
CC:     John Youn <John.Youn@...opsys.com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: Re: [PATCH 2/2] usb: dwc2: fixes host_dma logic

On 11/11/2016 12:59 PM, Christian Lamparter wrote:
> This patch moves the the host_dma initialization
> before dwc2_set_param_dma_desc_enable and
> dwc2_set_param_dma_desc_fs_enable. The reason being
> that both function need it.
> 
> Fixes: 1205489cee75bf39 ("usb: dwc2: Get host DMA device properties")

This should probably be omitted since it's only in Felipe's
testing/next.

Otherwise looks good.

Acked-by: John Youn <johnyoun@...opsys.com>

Regards,
John


> 
> Cc: John Youn <johnyoun@...opsys.com>
> Cc: Felipe Balbi <felipe.balbi@...ux.intel.com>
> Signed-off-by: Christian Lamparter <chunkeey@...il.com>
> ---
>  drivers/usb/dwc2/params.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
> index 5d822c5..222a83c 100644
> --- a/drivers/usb/dwc2/params.c
> +++ b/drivers/usb/dwc2/params.c
> @@ -1157,9 +1157,6 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
>  	bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
>  
>  	dwc2_set_param_otg_cap(hsotg, params->otg_cap);
> -	dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable);
> -	dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable);
> -
>  	if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
>  	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
>  		bool disable;
> @@ -1174,6 +1171,8 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
>  				    !disable, false,
>  				    dma_capable);
>  	}
> +	dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable);
> +	dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable);
>  
>  	dwc2_set_param_host_support_fs_ls_low_power(hsotg,
>  			params->host_support_fs_ls_low_power);
>