On Thu, 2013-05-30 at 16:23 +0800, Gavin Shan wrote:
> The patch changes the criteria used to judge if the PE has been
> resetted successfully. We needn't the PE status is exactly equal
> to the combo: (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE).

The comment above doesn't mean anything :-)

I assume you meant to write "we shouldn't check that the
returned PE status is exactly equal to the two flags X and Y,
but instead only check that they are both set".

Cheers,
Ben.

> Signed-off-by: Gavin Shan <sha...@linux.vnet.ibm.com>
> ---
>  arch/powerpc/platforms/pseries/eeh.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/pseries/eeh.c 
> b/arch/powerpc/platforms/pseries/eeh.c
> index 39d2ea6..ffe34c4 100644
> --- a/arch/powerpc/platforms/pseries/eeh.c
> +++ b/arch/powerpc/platforms/pseries/eeh.c
> @@ -527,7 +527,6 @@ static void eeh_reset_pe_once(struct eeh_pe *pe)
>        * Partitionable Endpoint trumps hot-reset.
>        */
>       eeh_pe_dev_traverse(pe, eeh_set_dev_freset, &freset);
> -

Unrelated churn

>       if (freset)
>               eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL);
>       else
> @@ -565,6 +564,7 @@ static void eeh_reset_pe_once(struct eeh_pe *pe)
>   */
>  int eeh_reset_pe(struct eeh_pe *pe)
>  {
> +     int flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE);
>       int i, rc;
>  
>       /* Take three shots at resetting the bus */
> @@ -572,7 +572,7 @@ int eeh_reset_pe(struct eeh_pe *pe)
>               eeh_reset_pe_once(pe);
>  
>               rc = eeh_ops->wait_state(pe, PCI_BUS_RESET_WAIT_MSEC);
> -             if (rc == (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE))
> +             if ((rc & flags) == flags)
>                       return 0;
>  
>               if (rc < 0) {


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