[PATCH 07/22] powerpc/eeh: EEH post initialization operation

[Gavin Shan]

The patch adds new EEH operation post_init. It's used to notify
the platform that EEH core has completed the EEH probe. Through
that, PowerNV will enable EEH eventually.

Signed-off-by: Gavin Shan <shangw at linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/eeh.h       |    1 +
 arch/powerpc/platforms/pseries/eeh.c |   11 +++++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 1ff2aa9..09ea298 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -131,6 +131,7 @@ static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev)
 struct eeh_ops {
 	char *name;
 	int (*init)(void);
+	int (*post_init)(void);
 	void* (*of_probe)(struct device_node *dn, void *flag);
 	void* (*dev_probe)(struct pci_dev *dev, void *flag);
 	int (*set_option)(struct eeh_pe *pe, int option);
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index abe26f8..39d2ea6 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -721,6 +721,17 @@ int __init eeh_init(void)
 		return -EINVAL;
 	}
 
+	/*
+	 * Call platform post-initialization. Actually, It's good chance
+	 * to inform platform that EEH is ready to supply service if the
+	 * I/O cache stuff has been built up.
+	 */
+	if (eeh_ops->post_init) {
+		ret = eeh_ops->post_init();
+		if (ret)
+			return ret;
+	}
+
 	if (eeh_subsystem_enabled)
 		pr_info("EEH: PCI Enhanced I/O Error Handling Enabled\n");
 	else
-- 
1.7.5.4