EDAC: Add routine to check if MC devices list is empty
We need to know if any MC devices have been allocated.
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1485537863-2707-7-git-send-email-Yazen.Ghannam@amd.com
[ Prettify text. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 750891e..e5573c5 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -453,6 +453,20 @@
}
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)
{