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-rw-r--r--arch/powerpc/kernel/eeh.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index 671302065347..4bd687d5e7aa 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -686,6 +686,15 @@ void eeh_save_bars(struct eeh_dev *edev)
686 686
687 for (i = 0; i < 16; i++) 687 for (i = 0; i < 16; i++)
688 eeh_ops->read_config(dn, i * 4, 4, &edev->config_space[i]); 688 eeh_ops->read_config(dn, i * 4, 4, &edev->config_space[i]);
689
690 /*
691 * For PCI bridges including root port, we need enable bus
692 * master explicitly. Otherwise, it can't fetch IODA table
693 * entries correctly. So we cache the bit in advance so that
694 * we can restore it after reset, either PHB range or PE range.
695 */
696 if (edev->mode & EEH_DEV_BRIDGE)
697 edev->config_space[1] |= PCI_COMMAND_MASTER;
689} 698}
690 699
691/** 700/**