linux-kernel - Re: [PATCH 1/6] usb/ohci-sm501: remove the HCD

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Date:   Tue, 3 Sep 2019 04:37:53 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Christoph Hellwig <hch@....de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/6] usb/ohci-sm501: remove the HCD_DMA flag

On Tue, Sep 03, 2019 at 10:46:10AM +0200, Christoph Hellwig wrote:
> This driver doesn't support normal DMA, only direct access to its
> local memory.  Remove the HCD_DMA flag to properly express that fact.
> 
> Fixes: 1e4946c4412e ("usb: add a HCD_DMA flag instead of guestimating DMA capabilities")
> Reported-by: Guenter Roeck <linux@...ck-us.net>
> Signed-off-by: Christoph Hellwig <hch@....de>

Tested-by: Guenter Roeck <linux@...ck-us.net>

on top of next-20190903.

Thanks!

Guenter

> ---
>  drivers/usb/host/ohci-sm501.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
> index 0b2aea6e28d4..c158cda9e4b9 100644
> --- a/drivers/usb/host/ohci-sm501.c
> +++ b/drivers/usb/host/ohci-sm501.c
> @@ -49,7 +49,7 @@ static const struct hc_driver ohci_sm501_hc_driver = {
>  	 * generic hardware linkage
>  	 */
>  	.irq =			ohci_irq,
> -	.flags =		HCD_USB11 | HCD_DMA | HCD_MEMORY,
> +	.flags =		HCD_USB11 | HCD_MEMORY,
>  
>  	/*
>  	 * basic lifecycle operations
> -- 
> 2.20.1
>