Re: [PATCH 1/2] e1000e: Disable ASPM L1 on 82574

Re: [PATCH 1/2] e1000e: Disable ASPM L1 on 82574

[Chris Boot]

On 23/04/2012 22:29, Chris Boot wrote:
> ASPM on the 82574 causes trouble. Currently the driver disables L0s for
> this NIC but only disables L1 if the MTU is >1500. This patch simply
> causes L1 to be disabled regardless of the MTU setting.
>
> Signed-off-by: Chris Boot <bootc@bootc.net>
> Cc: "Wyborny, Carolyn" <carolyn.wyborny@intel.com>
> Cc: Nix <nix@esperi.org.uk>
> Link: https://lkml.org/lkml/2012/3/19/362
> ---
>  drivers/net/ethernet/intel/e1000e/82571.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
> index b3fdc69..c6d95f2 100644
> --- a/drivers/net/ethernet/intel/e1000e/82571.c
> +++ b/drivers/net/ethernet/intel/e1000e/82571.c
> @@ -2061,8 +2061,9 @@ const struct e1000_info e1000_82574_info = {
>  				  | FLAG_HAS_SMART_POWER_DOWN
>  				  | FLAG_HAS_AMT
>  				  | FLAG_HAS_CTRLEXT_ON_LOAD,
> -	.flags2			  = FLAG2_CHECK_PHY_HANG
> +	.flags2			= FLAG2_CHECK_PHY_HANG
>  				  | FLAG2_DISABLE_ASPM_L0S
> +				  | FLAG2_DISABLE_ASPM_L1
>  				  | FLAG2_NO_DISABLE_RX,
>  	.pba			= 32,
>  	.max_hw_frame_size	= DEFAULT_JUMBO,

Now that this patch is in master (d4a4206e) and has presumably been
widely tested, what's the possibility of it making it into stable? I
really should have included a CC to stable when I sent it...

This patch should probably also be accompanied with 59aed952 (e1000e:
Remove special case for 82573/82574 ASPM L1 disablement) on top, to
remove a special case that's no longer required once this is applied.

Thanks,
Chris

-- 
Chris Boot
bootc@bootc.net

Re: [PATCH 1/2] e1000e: Disable ASPM L1 on 82574

[Greg KH]

On Fri, Jun 01, 2012 at 10:17:08PM +0100, Chris Boot wrote:
> On 23/04/2012 22:29, Chris Boot wrote:
> > ASPM on the 82574 causes trouble. Currently the driver disables L0s for
> > this NIC but only disables L1 if the MTU is >1500. This patch simply
> > causes L1 to be disabled regardless of the MTU setting.
> >
> > Signed-off-by: Chris Boot <bootc@bootc.net>
> > Cc: "Wyborny, Carolyn" <carolyn.wyborny@intel.com>
> > Cc: Nix <nix@esperi.org.uk>
> > Link: https://lkml.org/lkml/2012/3/19/362
> > ---
> >  drivers/net/ethernet/intel/e1000e/82571.c |    3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
> > index b3fdc69..c6d95f2 100644
> > --- a/drivers/net/ethernet/intel/e1000e/82571.c
> > +++ b/drivers/net/ethernet/intel/e1000e/82571.c
> > @@ -2061,8 +2061,9 @@ const struct e1000_info e1000_82574_info = {
> >  				  | FLAG_HAS_SMART_POWER_DOWN
> >  				  | FLAG_HAS_AMT
> >  				  | FLAG_HAS_CTRLEXT_ON_LOAD,
> > -	.flags2			  = FLAG2_CHECK_PHY_HANG
> > +	.flags2			= FLAG2_CHECK_PHY_HANG
> >  				  | FLAG2_DISABLE_ASPM_L0S
> > +				  | FLAG2_DISABLE_ASPM_L1
> >  				  | FLAG2_NO_DISABLE_RX,
> >  	.pba			= 32,
> >  	.max_hw_frame_size	= DEFAULT_JUMBO,
> 
> Now that this patch is in master (d4a4206e) and has presumably been
> widely tested, what's the possibility of it making it into stable? I
> really should have included a CC to stable when I sent it...

I'd be glad to apply it, but it doesn't apply properly to the 3.4-stable
tree :(

> This patch should probably also be accompanied with 59aed952 (e1000e:
> Remove special case for 82573/82574 ASPM L1 disablement) on top, to
> remove a special case that's no longer required once this is applied.

As I can't apply the first one, this one shouldn't be applied either at
this point in time...

thanks,

greg k-h