---

yaml --- r: 203222 b: refs/heads/master c: 36f2407 h: refs/heads/master v: v3
git-mirror · Jun 30, 2010 · 70ae284 · 70ae284
1 parent f45855a
commit 70ae284
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Showing 2 changed files with 10 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c057573f21db0ef85f78318875269a2159af35c
+refs/heads/master: 36f2407fe52c55566221f8c68c8fb808abffd2f5
diff --git a/trunk/drivers/net/e1000e/netdev.c b/trunk/drivers/net/e1000e/netdev.c
@@ -3439,13 +3439,18 @@ static int e1000_test_msi(struct e1000_adapter *adapter)
 
 	/* disable SERR in case the MSI write causes a master abort */
 	pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
-	pci_write_config_word(adapter->pdev, PCI_COMMAND,
-			      pci_cmd & ~PCI_COMMAND_SERR);
+	if (pci_cmd & PCI_COMMAND_SERR)
+		pci_write_config_word(adapter->pdev, PCI_COMMAND,
+				      pci_cmd & ~PCI_COMMAND_SERR);
 
 	err = e1000_test_msi_interrupt(adapter);
 
-	/* restore previous setting of command word */
-	pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
+	/* re-enable SERR */
+	if (pci_cmd & PCI_COMMAND_SERR) {
+		pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
+		pci_cmd |= PCI_COMMAND_SERR;
+		pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
+	}
 
 	/* success ! */
 	if (!err)