On Fri, Nov 29, 2013 at 10:07:49AM +0800, Chris Ruehl wrote:
> * init the sts flag to 0 (missed)
> * set the sts flag only if not 0
> 
> Signed-off-by: Chris Ruehl <chris.ru...@gtsys.com.hk>
> ---
>  drivers/usb/chipidea/core.c |    8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 5075407..1a6010e 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -245,6 +245,8 @@ static void hw_phymode_configure(struct ci_hdrc *ci)
>  {
>       u32 portsc, lpm, sts;
>  
> +     sts = 0;
> +

This makes sense, but should be moved up to the
variable declartion:

-       u32 portsc, lpm, sts;
+       u32 portsc, lpm, sts = 0;

>       switch (ci->platdata->phy_mode) {
>       case USBPHY_INTERFACE_MODE_UTMI:
>               portsc = PORTSC_PTS(PTS_UTMI);
> @@ -273,10 +275,12 @@ 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, sts);

What is wrong with explicit setting DEVLC_STS to 0 if we
know that we don't use serial phy mode?

>       } 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, sts);
>       }
>  }

ditto

Regards,
Michael

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