From: Xie Shaowen <studentxswpy@xxxxxxx>
[ Upstream commit dbaa3105736d4d73063ea0a3b01cd7fafce924e6 ]
The function ioremap() in macio_init() can fail, so its return value
should be checked.
Fixes: 36874579dbf4c ("[PATCH] powerpc: macio-adb build fix")
Reported-by: Hacash Robot <hacashRobot@xxxxxxxxxxx>
Signed-off-by: Xie Shaowen <studentxswpy@xxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220802074148.3213659-1-studentxswpy@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/macintosh/macio-adb.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c
index 9b63bd2551c6..cd4e34d15c26 100644
--- a/drivers/macintosh/macio-adb.c
+++ b/drivers/macintosh/macio-adb.c
@@ -108,6 +108,10 @@ 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);
--
2.35.1
