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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

On Thu, Sep 04, 2014 at 07:37:20PM +0000, Paul Zimmerman wrote:
> > 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.

Right, you'll receive a notification from Greg that the patch FAILED to
apply and all you gotta do is provide a modified patch which, in this
case, is just a path modification.

-- 
balbi

Attachment: signature.asc
Description: Digital signature


[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux