On Thu, 2015-05-28 at 10:40 +0200, Thomas Petazzoni wrote:
> From: Nicolas Schichan <nschichan@xxxxxxxxxx>
>
> Commit a0b5cd4ac2d6 ("bus: mvebu-mbus: use automatic I/O
> synchronization barriers") enabled the usage of automatic I/O
> synchronization barriers by enabling bit WIN_CTRL_SYNCBARRIER in the
> control registers of MBus windows, but on non io-coherent platforms
> (orion5x, kirkwood and dove) the WIN_CTRL_SYNCBARRIER bit in
> the window control register is either reserved (all windows except 6
> and 7) or enables read-only protection (windows 6 and 7).
>
> Signed-off-by: Nicolas Schichan <nschichan@xxxxxxxxxx>
> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.0+
> Fixes: a0b5cd4ac2d6 ("bus: mvebu-mbus: use automatic I/O synchronization barriers")
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Tested-by: Ian Campbell <ijc@xxxxxxxxxx> (On QNAP TS-419P, it fixed SATA
reset issue)
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