Re: [PATCH 3/7] usb: ehci: add freescale imx28 special write register method

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On Mon, Dec 09, 2013 at 08:37:55AM +0000, Peter.Chen@xxxxxxxxxxxxx wrote:
>  
> > 
> > On Thu, Dec 05, 2013 at 03:20:51PM +0800, Peter Chen wrote:
> > > According to Freescale imx28 Errata, "ENGR119653 USB: ARM to USB
> > > register error issue", All USB register write operations must
> > > use the ARM SWP instruction. So, we implement a special ehci_write
> > > for imx28.
> > >
> > > Discussion for it at below:
> > > http://marc.info/?l=linux-usb&m=137996395529294&w=2
> > >
> > > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
> > > Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> > > Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> > > Tested-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> > > ---
> > >  drivers/usb/host/ehci.h |   18 +++++++++++++++++-
> > >  1 files changed, 17 insertions(+), 1 deletions(-)
> > 
> > How is this a regression that needs to be fixed in 3.13-final?
> > 
> 
> Without this patchset, there is lots of usb errors at i.mx28.
> It was reported at: http://marc.info/?l=linux-usb&m=137996395529294&w=2.
> 
> 

This patchset includes [3/7], [4/7] and [5/7].

Thanks.

-- 

Best Regards,
Peter Chen

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