From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G

---
 kernel/drivers/macintosh/macio-adb.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/macintosh/macio-adb.c b/kernel/drivers/macintosh/macio-adb.c
index d4759db..defe65f 100644
--- a/kernel/drivers/macintosh/macio-adb.c
+++ b/kernel/drivers/macintosh/macio-adb.c
@@ -106,6 +106,10 @@
 		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);

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