>
> On Friday, November 29, 2013 11:27 AM, Peter Chen wrote:
> >
> >> * init the sts flag to 0 (missed)
> >> * set the sts flag only if not 0
> >>
> > does PORTSC_STS bit as 1 or 0 affect your case?
> > If not, please remove hw_write(ci, OP_DEVLC, DEVLC_STS, sts),
> > since it is useless at current code logic.
> >
> > Peter
>
> Peter,
>
> in the switch statement sts is set to 1 therefore I think its used.
>
> case USBPHY_INTERFACE_MODE_SERIAL:
> portsc = PORTSC_PTS(PTS_SERIAL);
> lpm = DEVLC_PTS(PTS_SERIAL);
> sts = 1;
> break;
>
> Regards
> Chris
>
>
Yes, you are right. It is just not showed at the patch.
Would you move the sts = 0 to sts declaration, it can reduce the code line.
u32 portsc, lpm, sts = 0;
> >
> >> Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx>
> >> ---
> >> 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;
> >> +
> >> 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);
> >> } 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);
> >> }
> >> }
> >>
> >> --
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