On Thu, Nov 05, 2015 at 12:10:57AM +0000, John Youn wrote:
> On 10/12/2015 2:18 AM, Gregory Herrero wrote:
> > status_buf needs to be freed in dwc2_hcd_remove().
> > 
> > Signed-off-by: Gregory Herrero <gregory.herr...@intel.com>
> > ---
> >  drivers/usb/dwc2/hcd.c | 19 ++++++++++++++++++-
> >  1 file changed, 18 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
> > index af4e4a2..41c00e9 100644
> > --- a/drivers/usb/dwc2/hcd.c
> > +++ b/drivers/usb/dwc2/hcd.c
> > @@ -3141,7 +3141,7 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq)
> >      */
> >     retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
> >     if (retval < 0)
> > -           goto error3;
> > +           goto error4;
> >  
> >     device_wakeup_enable(hcd->self.controller);
> >  
> > @@ -3151,6 +3151,14 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq)
> >  
> >     return 0;
> >  
> > +error4:
> > +   if (hsotg->core_params->dma_enable > 0)
> > +           dma_free_coherent(hsotg->dev,
> > +                             DWC2_HCD_STATUS_BUF_SIZE,
> > +                             hsotg->status_buf,
> > +                             hsotg->status_buf_dma);
> > +   else
> > +           kfree(hsotg->status_buf);
> >  error3:
> >     dwc2_hcd_release(hsotg);
> >  error2:
> > @@ -3191,6 +3199,15 @@ void dwc2_hcd_remove(struct dwc2_hsotg *hsotg)
> >  
> >     usb_remove_hcd(hcd);
> >     hsotg->priv = NULL;
> > +
> > +   if (hsotg->core_params->dma_enable > 0)
> > +           dma_free_coherent(hsotg->dev,
> > +                             DWC2_HCD_STATUS_BUF_SIZE,
> > +                             hsotg->status_buf,
> > +                             hsotg->status_buf_dma);
> > +   else
> > +           kfree(hsotg->status_buf);
> > +
> >     dwc2_hcd_release(hsotg);
> >     usb_put_hcd(hcd);
> >  
> > 
> 
> This is already getting done in dwc2_hcd_free() which is reached
> from both of these code paths.
> 
> Is this patch needed for some other reason?
> 
Right, I missed it in dwc2_hcd_release().
I will remove this patch and resubmit.

Thanks,
Gregory
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