powerpc/pseries: Improve error code on reconfiguration notifier failure
Reconfiguration notifier call for device node may fail by several reasons,
but it always assumes kmalloc failures.
This enables reconfiguration notifier call chain to get the actual error
code rather than -ENOMEM by converting all reconfiguration notifier calls
to return encapsulate error code with notifier_from_errno().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 33867ec..1eaefd6 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -197,27 +197,21 @@
static int pseries_memory_notifier(struct notifier_block *nb,
unsigned long action, void *node)
{
- int err = NOTIFY_OK;
+ int err = 0;
switch (action) {
case PSERIES_RECONFIG_ADD:
- if (pseries_add_memory(node))
- err = NOTIFY_BAD;
+ err = pseries_add_memory(node);
break;
case PSERIES_RECONFIG_REMOVE:
- if (pseries_remove_memory(node))
- err = NOTIFY_BAD;
+ err = pseries_remove_memory(node);
break;
case PSERIES_DRCONF_MEM_ADD:
case PSERIES_DRCONF_MEM_REMOVE:
- if (pseries_drconf_memory(node, action))
- err = NOTIFY_BAD;
- break;
- default:
- err = NOTIFY_DONE;
+ err = pseries_drconf_memory(node, action);
break;
}
- return err;
+ return notifier_from_errno(err);
}
static struct notifier_block pseries_mem_nb = {