RE: [PATCH RESEND v3 01/12] usb: dwc2/gadget: fix phy disable sequence

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> From: Felipe Balbi [mailto:balbi@xxxxxx]
> Sent: Thursday, September 04, 2014 12:18 PM
> 
> On Thu, Sep 04, 2014 at 12:04:23PM -0700, Paul Zimmerman wrote:
> > From: Kamil Debski <k.debski@xxxxxxxxxxx>
> >
> > When the driver is removed s3c_hsotg_phy_disable is called three times
> > instead of once. This results in decreasing of the phy reference counter
> > below zero and thus consecutive inserts of the module fails.
> >
> > This patch removes calls to s3c_hsotg_phy_disable from s3c_hsotg_remove
> > and s3c_hsotg_udc_stop.
> >
> > s3c_hsotg_udc_stop is called from udc-core.c only after
> > usb_gadget_disconnect, which in turn calls s3c_hsotg_pullup, which
> > already calls s3c_hsotg_phy_disable.
> >
> > s3c_hsotg_remove must be called only after udc_stop, so there is no
> > point in disabling phy once again there.
> >
> > Signed-off-by: Kamil Debski <k.debski@xxxxxxxxxxx>
> > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> > Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
> > Signed-off-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
> 
> looks like this one deserves a Cc: stable ?

Good point. Robert, what do you think? Only problem is, this file
moved from drivers/usb/gadget/ to here in 3.16, so earlier stable
versions would require some additional backporting.

-- 
Paul

> FWIW
> 
> Reviewed-by: Felipe Balbi <balbi@xxxxxx>

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