Re: mmc: sdhci: Fix FSL ESDHC reset handling quirk

[Greg KH <greg@kroah.com>]

On Fri, Jul 31, 2015 at 12:53:31PM +0200, Jakub Kicinski wrote:
> On Thu, 30 Jul 2015 18:07:39 -0700, Greg KH wrote:
> > On Wed, Jun 03, 2015 at 06:54:38AM +0200, Jakub Kicinski wrote:
> > > On Wed, 3 Jun 2015 09:46:29 +0900, Greg KH wrote:
> > > > On Tue, Jun 02, 2015 at 04:37:09PM +0200, Jakub Kicinski wrote:
> > > > > Please include following patch from Linus' tree in the 3.18 branch.
> > > > > Without it SDHC is unusable on Freescale P2020.  Thanks!
> > > > > 
> > > > > 
> > > > > commit 556b5f33513f16450e8bb803c82a24377b94a34e
> > > > 
> > > > I don't see this commit anywhere in Linus's tree.  Where did you find
> > > > it?
> > > 
> > > Argh, stupidly I sent you the commit id from after I applied this to
> > > 3.18...  In Linus's tree it's 304f0a98d168, sorry.
> > > 
> > > 
> > > commit 304f0a98d168563b5f69c53a7544c36e6d221ac4
> > > Author: Alessio Igor Bogani <alessio.bogani@elettra.eu>
> > > Date:   Tue Dec 9 09:40:38 2014 +0100
> > > 
> > >     mmc: sdhci: Fix FSL ESDHC reset handling quirk
> > >     
> > >     The commit 0718e59ae259 ("mmc: sdhci: move FSL ESDHC reset handling quirk into
> > >     esdhc code") states that Freescale esdhc is the only controller which needs
> > >     the interrupt registers restored after a reset. So it moves
> > >     SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET quirk handling code into the
> > >     esdhc-imx driver only. Unfortunately the same controller is used in
> > >     other boards which use the of-esdhc driver instead (like powerpc P2020).
> > >     
> > >     Restore interrupts after reset in the sdhci-of-esdhc driver also.
> > >     
> > >     Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
> > >     Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
> > 
> > 
> > I don't remember tree what you wanted this applied to, so I tried
> > 3.14-stable, and that didn't work.  Can you be more specific?
> 
> OK, let me try again.  I would like the following commit to be applied
> to 3.18:
> 
> 
> commit 304f0a98d168563b5f69c53a7544c36e6d221ac4
> Author: Alessio Igor Bogani <alessio.bogani@elettra.eu>
> Date:   Tue Dec 9 09:40:38 2014 +0100
>  
>      mmc: sdhci: Fix FSL ESDHC reset handling quirk
>      
>      The commit 0718e59ae259 ("mmc: sdhci: move FSL ESDHC reset handling quirk into
>      esdhc code") states that Freescale esdhc is the only controller which needs
>      the interrupt registers restored after a reset. So it moves
>      SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET quirk handling code into the
>      esdhc-imx driver only. Unfortunately the same controller is used in
>      other boards which use the of-esdhc driver instead (like powerpc P2020).
>      
>      Restore interrupts after reset in the sdhci-of-esdhc driver also.
>      
>      Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
>      Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>  
> 

As I don't maintain 3.18, nothing I can do here, great! :)