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-rw-r--r--drivers/edac/edac_mc.c14
-rw-r--r--drivers/edac/edac_mc.h9
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 750891ea07de..e5573c56b15e 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -453,6 +453,20 @@ void edac_mc_free(struct mem_ctl_info *mci)
}
EXPORT_SYMBOL_GPL(edac_mc_free);
+bool edac_has_mcs(void)
+{
+ bool ret;
+
+ mutex_lock(&mem_ctls_mutex);
+
+ ret = list_empty(&mc_devices);
+
+ mutex_unlock(&mem_ctls_mutex);
+
+ return !ret;
+}
+EXPORT_SYMBOL_GPL(edac_has_mcs);
+
/* Caller must hold mem_ctls_mutex */
static struct mem_ctl_info *__find_mci_by_dev(struct device *dev)
{
diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h
index 50fc1dc9c0d8..5357800e418d 100644
--- a/drivers/edac/edac_mc.h
+++ b/drivers/edac/edac_mc.h
@@ -149,6 +149,15 @@ extern int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci,
extern void edac_mc_free(struct mem_ctl_info *mci);
/**
+ * edac_has_mcs() - Check if any MCs have been allocated.
+ *
+ * Returns:
+ * True if MC instances have been registered successfully.
+ * False otherwise.
+ */
+extern bool edac_has_mcs(void);
+
+/**
* edac_mc_find() - Search for a mem_ctl_info structure whose index is @idx.
*
* @idx: index to be seek