linux-kernel - Re: [PATCH 2/3 v5] Fix Internal error: : 808 [#1] ARM related to STS flag

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Message-ID: <20131206070845.GG14002@shlinux1.ap.freescale.net>
Date:	Fri, 6 Dec 2013 15:08:46 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	Chris Ruehl <chris.ruehl@...ys.com.hk>
CC:	<gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3 v5] Fix Internal error: : 808 [#1] ARM related to
 STS flag

On Wed, Dec 04, 2013 at 09:56:18AM +0800, Chris Ruehl wrote:
> Fix Internal error: : 808 [#1] ARM related to STS flag
> 
> * init the sts flag to 0 (missed)
> * fix write the real bit not sts value
> * Set PORTCS_STS and DEVLC_STS only if sts = 1
>  (prefered solution by Mr. Peter Chen, Maintainer of ChipIdea subsystem)
> 
> Signed-off-by: Chris Ruehl <chris.ruehl@...ys.com.hk>
> ---
>  drivers/usb/chipidea/core.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 9a5ef20..2834801 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -243,7 +243,7 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base)
>  
>  static void hw_phymode_configure(struct ci_hdrc *ci)
>  {
> -	u32 portsc, lpm, sts;
> +	u32 portsc, lpm, sts = 0;
>  
>  	switch (ci->platdata->phy_mode) {
>  	case USBPHY_INTERFACE_MODE_UTMI:
> @@ -273,10 +273,12 @@ static void hw_phymode_configure(struct ci_hdrc *ci)
>  
>  	if (ci->hw_bank.lpm) {
>  		hw_write(ci, OP_DEVLC, DEVLC_PTS(7) | DEVLC_PTW, lpm);
> -		hw_write(ci, OP_DEVLC, DEVLC_STS, sts);
> +		if (sts)
> +			hw_write(ci, OP_DEVLC, DEVLC_STS, DEVLC_STS);
>  	} else {
>  		hw_write(ci, OP_PORTSC, PORTSC_PTS(7) | PORTSC_PTW, portsc);
> -		hw_write(ci, OP_PORTSC, PORTSC_STS, sts);
> +		if (sts)
> +			hw_write(ci, OP_PORTSC, PORTSC_STS, PORTSC_STS);
>  	}
>  }
>  
> -- 
> 1.7.10.4
> 
> 

Applied, Thanks.

-- 

Best Regards,
Peter Chen

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