i7core_edac: MCE NMI handling should stop first

Otherwise, a NMI may happen causing a race condition and a panic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index d2b2ed8915fd..e5aa06e6389e 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -2070,6 +2070,10 @@ static void __devexit i7core_remove(struct pci_dev *pdev)
                         debugf0("MC: " __FILE__ ": %s(): mci = %p, dev = %p\n",
                                 __func__, mci, &i7core_dev->pdev[0]->dev);
 
+                        /* Disable MCE NMI handler */
+                        edac_mce_unregister(&pvt->edac_mce);
+
+                        /* Disable EDAC polling */
                         if (likely(pvt->i7core_pci))
                                 edac_pci_release_generic_ctl(pvt->i7core_pci);
                         else
@@ -2078,11 +2082,14 @@ static void __devexit i7core_remove(struct pci_dev *pdev)
                                               i7core_dev->socket);
                         pvt->i7core_pci = NULL;
 
+                        /* Remove MC sysfs nodes */
                         edac_mc_del_mc(&i7core_dev->pdev[0]->dev);
 
-                        edac_mce_unregister(&pvt->edac_mce);
+                        /* Free data */
                         kfree(mci->ctl_name);
                         edac_mc_free(mci);
+
+                        /* Release PCI resources */
                         i7core_put_devices(i7core_dev);
                 }
         }