On Mon, Jul 29, 2013 at 4:29 PM, Rafael J. Wysocki <r...@sisk.pl> wrote:
> On Monday, July 29, 2013 04:18:22 PM Ben Guthro wrote:
> >
> > On 07/29/2013 04:21 PM, Rafael J. Wysocki wrote:
> > > On Monday, July 29, 2013 01:14:14 PM Ben Guthro wrote:
> > >> Register for the extended sleep callback from acpi.
> > >> As tboot currently does not support the reduced hardware sleep
> > >> interface, fail this extended call.
> > >>
> > >> Signed-off-by: Jan Beulich <jbeul...@suse.com>
> > >> Signed-off-by: Ben Guthro <benjamin.gut...@citrix.com>
> > >> Cc: tboot-devel@lists.sourceforge.net
> > >> Cc: Gang Wei <gang....@intel.com>
> > >> Reviewed-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
> > >> ---
> > >> arch/x86/kernel/tboot.c | 12 ++++++++++++
> > >> 1 file changed, 12 insertions(+)
> > >>
> > >> diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
> > >> index addf7b5..760f431 100644
> > >> --- a/arch/x86/kernel/tboot.c
> > >> +++ b/arch/x86/kernel/tboot.c
> > >> @@ -301,6 +301,17 @@ static int tboot_sleep(u8 sleep_state, u32
> pm1a_control, u32 pm1b_control)
> > >> return 0;
> > >> }
> > >>
> > >> +static int tboot_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b)
> > >> +{
> > >> + if (!tboot_enabled())
> > >> + return 0;
> > >> +
> > >> + pr_warning("tboot is not able to suspend on platforms with"
> > >> + " reduced hardware sleep (ACPIv5). Please contact"
> > >> + " tboot-devel@lists.sourceforge.net mailing list.");
> > >> + return -1;
> > >
> > > Please use a meaningful error code here. For example -ENODEV.
> >
> > Would AE_NOT_IMPLEMENTED be more appropriate?
> >
> > include/acpi/acexcep.h:
> > #define AE_NOT_IMPLEMENTED EXCEP_ENV (0x000E)
>
> This is not an ACPI error. :-)
>
Good point.
-ENODEV it is, then.
I'll respin tomorrow morning, to allow for anyone else who wishes to
comment on the series.
Thanks for the review
Ben
>
> Rafael
>
>
>
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