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Date: Tue, 22 Oct 2019 16:19:37 +0000 From: "Allan, Bruce W" <bruce.w.allan@...el.com> To: "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>, "davem@...emloft.net" <davem@...emloft.net> CC: "Neftin, Sasha" <sasha.neftin@...el.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "nhorman@...hat.com" <nhorman@...hat.com>, "sassmann@...hat.com" <sassmann@...hat.com>, "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>, "Lifshits, Vitaly" <vitaly.lifshits@...el.com>, Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>, "Brown, Aaron F" <aaron.f.brown@...el.com>, "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com> Subject: RE: [net-next v3 2/5] e1000e: Add support for S0ix > -----Original Message----- > From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org] > On Behalf Of Jeff Kirsher > Sent: Monday, October 21, 2019 11:02 AM > To: davem@...emloft.net > Cc: Neftin, Sasha <sasha.neftin@...el.com>; netdev@...r.kernel.org; > nhorman@...hat.com; sassmann@...hat.com; Wysocki, Rafael J > <rafael.j.wysocki@...el.com>; Lifshits, Vitaly <vitaly.lifshits@...el.com>; > Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>; Brown, Aaron F > <aaron.f.brown@...el.com>; Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com> > Subject: [net-next v3 2/5] e1000e: Add support for S0ix > > From: Sasha Neftin <sasha.neftin@...el.com> > > Implement flow for S0ix support. Modern SoCs support S0ix low power > states during idle periods, which are sub-states of ACPI S0 that increase > power saving while supporting an instant-on experience for providing > lower latency that ACPI S0. The S0ix states shut off parts of the SoC > when they are not in use, while still maintaning optimal performance. > This patch add support for S0ix started from an Ice Lake platform. > > Suggested-by: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com> > Signed-off-by: Vitaly Lifshits <vitaly.lifshits@...el.com> > Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com> > Signed-off-by: Sasha Neftin <sasha.neftin@...el.com> > Tested-by: Aaron Brown <aaron.f.brown@...el.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> > --- > drivers/net/ethernet/intel/e1000e/netdev.c | 182 +++++++++++++++++++++ > drivers/net/ethernet/intel/e1000e/regs.h | 4 + > 2 files changed, 186 insertions(+) This patch generates warnings that e1000e_s0ix_entry_flow and e1000e_s0ix_exit_flow are defined but not used [-Wunused-function] when CONFIG_PM_SLEEP is not defined. The warnings were called out by Intel's 0-DAY kernel test infrastructure after this patch was merged into the dev-queue branch of Jeff's next-queue tree, so any fix for the warnings should include the tag " Reported-by: kbuild test robot <lkp@...el.com>". Bruce.
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