[PATCH v1 2/7] powerpc/kernel: Add uevents in EEH error/resume

[Bryant G. Ly]

Devices can go offline when EEH is reported. This patch adds
a change to the kernel object and lets udev know of error.
When device resumes a change is also set reporting device as
online. Therefore, EEH events are better propagated to user
space for devices in powerpc arch.

Signed-off-by: Bryant G. Ly <bryantly at linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare at linux.vnet.ibm.com>
---
 arch/powerpc/kernel/eeh_driver.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 3c0fa99c5533..c61bf770282b 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -204,6 +204,7 @@ static void *eeh_report_error(void *data, void *userdata)
 	struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
 	enum pci_ers_result rc, *res = userdata;
 	struct pci_driver *driver;
+	char *envp[] = {"EVENT=EEH_ERROR", "ONLINE=0", NULL};
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
@@ -228,6 +229,7 @@ static void *eeh_report_error(void *data, void *userdata)
 
 	edev->in_error = true;
 	eeh_pcid_put(dev);
+	kobject_uevent_env(&dev->dev.kobj, KOBJ_CHANGE, envp);
 	return NULL;
 }
 
@@ -358,6 +360,7 @@ static void *eeh_report_resume(void *data, void *userdata)
 	struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
 	bool was_in_error;
 	struct pci_driver *driver;
+	char *envp[] = {"EVENT=EEH_RESUME", "ONLINE=1", NULL};
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
@@ -379,8 +382,8 @@ static void *eeh_report_resume(void *data, void *userdata)
 	}
 
 	driver->err_handler->resume(dev);
-
 	eeh_pcid_put(dev);
+	kobject_uevent_env(&dev->dev.kobj, KOBJ_CHANGE, envp);
 	return NULL;
 }
 
-- 
2.14.3 (Apple Git-98)