linux-kernel - Re: [PATCH v2] fsl-usb: add need_oc_pp

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Date:   Thu, 13 May 2021 10:42:06 -0400
From:   Alan Stern <stern@...land.harvard.edu>
To:     Gopalakrishnan Santhanam <gsanthan@...co.com>
Cc:     danielwa@...co.com, hramdasi@...co.com,
        christian.engelmayer@...quentis.com, xe-linux-external@...co.com,
        gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] fsl-usb: add need_oc_pp_cycle flag for 85xx also

On Thu, May 13, 2021 at 02:02:25PM +0530, Gopalakrishnan Santhanam wrote:
> Commit e6604a7fd71f9 ("EHCI: Quirk flag for port power handling
> on overcurrent.") activated the quirks handling (flag need_oc_pp_cycle)
> for Freescale 83xx based boards.
> Activate same for 85xx based boards as well.
> 
> Cc: xe-linux-external@...co.com
> Signed-off-by: Gopalakrishnan Santhanam <gsanthan@...co.com>
> Signed-off-by: Daniel Walker <danielwa@...co.com>
> ---

Acked-by: Alan Stern <stern@...land.harvard.edu>

>  drivers/usb/host/ehci-fsl.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
> index 6f7bd6641694..385be30baad3 100644
> --- a/drivers/usb/host/ehci-fsl.c
> +++ b/drivers/usb/host/ehci-fsl.c
> @@ -387,11 +387,11 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
>  	/* EHCI registers start at offset 0x100 */
>  	ehci->caps = hcd->regs + 0x100;
>  
> -#ifdef CONFIG_PPC_83xx
> +#if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_85xx)
>  	/*
> -	 * Deal with MPC834X that need port power to be cycled after the power
> -	 * fault condition is removed. Otherwise the state machine does not
> -	 * reflect PORTSC[CSC] correctly.
> +	 * Deal with MPC834X/85XX that need port power to be cycled
> +	 * after the power fault condition is removed. Otherwise the
> +	 * state machine does not reflect PORTSC[CSC] correctly.
>  	 */
>  	ehci->need_oc_pp_cycle = 1;
>  #endif
> -- 
> 2.26.2.Cisco
>