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-rw-r--r--drivers/macintosh/macio-adb.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c
index eb3adfb7f..172a8b18c 100644
--- a/drivers/macintosh/macio-adb.c
+++ b/drivers/macintosh/macio-adb.c
@@ -106,6 +106,10 @@ int macio_init(void)
return -ENXIO;
}
adb = ioremap(r.start, sizeof(struct adb_regs));
+ if (!adb) {
+ of_node_put(adbs);
+ return -ENOMEM;
+ }
out_8(&adb->ctrl.r, 0);
out_8(&adb->intr.r, 0);