Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.

["Rafael J. Wysocki" <rjw@sisk.pl>]

[-- Attachment #1: Type: text/plain, Size: 665 bytes --]

On Thursday, January 31, 2013 02:10:34 PM Borislav Petkov wrote:
> On Thu, Jan 31, 2013 at 02:12:58PM +0100, Rafael J. Wysocki wrote:
> > Yes, there are two bugs in e1000e, it appears. Konstantin's
> > patch [2/5] fixes one of them, but the other one has to be fixed
> > differently.
> >
> > Boris, would you be able to test a couple of e1000e patches for me?
> 
> Sure, send them on. You can add 2/5 in the mix too.

There you go.

The [2/5] is at: https://patchwork.kernel.org/patch/2001211/

The other two are attached.  I suppose the ordering doesn't matter.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.

[-- Attachment #2: pci-pm-fix-e1000e-runtime-suspend.patch --]
[-- Type: text/x-patch, Size: 2247 bytes --]

---
 drivers/net/ethernet/intel/e1000e/netdev.c |    1 +
 drivers/pci/pci.c                          |    1 +
 drivers/pci/pci.h                          |    1 -
 include/linux/pci.h                        |    1 +
 4 files changed, 3 insertions(+), 1 deletion(-)

Index: linux-pm/drivers/pci/pci.c
===================================================================
--- linux-pm.orig/drivers/pci/pci.c
+++ linux-pm/drivers/pci/pci.c
@@ -1840,6 +1840,7 @@ int pci_finish_runtime_suspend(struct pc
 
 	return error;
 }
+EXPORT_SYMBOL_GPL(pci_finish_runtime_suspend);
 
 /**
  * pci_dev_run_wake - Check if device can generate run-time wake-up events.
Index: linux-pm/drivers/pci/pci.h
===================================================================
--- linux-pm.orig/drivers/pci/pci.h
+++ linux-pm/drivers/pci/pci.h
@@ -64,7 +64,6 @@ extern int pci_set_platform_pm(struct pc
 extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
 extern void pci_power_up(struct pci_dev *dev);
 extern void pci_disable_enabled_device(struct pci_dev *dev);
-extern int pci_finish_runtime_suspend(struct pci_dev *dev);
 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
 extern void pci_wakeup_bus(struct pci_bus *bus);
 extern void pci_config_pm_runtime_get(struct pci_dev *dev);
Index: linux-pm/include/linux/pci.h
===================================================================
--- linux-pm.orig/include/linux/pci.h
+++ linux-pm/include/linux/pci.h
@@ -936,6 +936,7 @@ int pci_back_from_sleep(struct pci_dev *
 bool pci_dev_run_wake(struct pci_dev *dev);
 bool pci_check_pme_status(struct pci_dev *dev);
 void pci_pme_wakeup_bus(struct pci_bus *bus);
+int pci_finish_runtime_suspend(struct pci_dev *dev);
 
 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
 				  bool enable)
Index: linux-pm/drivers/net/ethernet/intel/e1000e/netdev.c
===================================================================
--- linux-pm.orig/drivers/net/ethernet/intel/e1000e/netdev.c
+++ linux-pm/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -5696,6 +5696,7 @@ static int e1000_runtime_suspend(struct
 		bool wake;
 
 		__e1000_shutdown(pdev, &wake, true);
+		pci_finish_runtime_suspend(pdev);
 	}
 
 	return 0;

[-- Attachment #3: pci-pm-clear-state_saved-during-suspend.patch --]
[-- Type: text/x-patch, Size: 1028 bytes --]

---
 drivers/pci/pci-driver.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-pm/drivers/pci/pci-driver.c
===================================================================
--- linux-pm.orig/drivers/pci/pci-driver.c
+++ linux-pm/drivers/pci/pci-driver.c
@@ -628,6 +628,7 @@ static int pci_pm_suspend(struct device
 		goto Fixup;
 	}
 
+	pci_dev->state_saved = false;
 	if (pm->suspend) {
 		pci_power_t prev = pci_dev->current_state;
 		int error;
@@ -774,6 +775,7 @@ static int pci_pm_freeze(struct device *
 		return 0;
 	}
 
+	pci_dev->state_saved = false;
 	if (pm->freeze) {
 		int error;
 
@@ -862,6 +864,7 @@ static int pci_pm_poweroff(struct device
 		goto Fixup;
 	}
 
+	pci_dev->state_saved = false;
 	if (pm->poweroff) {
 		int error;
 
@@ -987,6 +990,7 @@ static int pci_pm_runtime_suspend(struct
 	if (!pm || !pm->runtime_suspend)
 		return -ENOSYS;
 
+	pci_dev->state_saved = false;
 	pci_dev->no_d3cold = false;
 	error = pm->runtime_suspend(dev);
 	suspend_report_result(pm->runtime_suspend, error);