Commit b703da16 authored Aug 02, 2022 by Xie Shaowen Committed by Greg Kroah-Hartman Jan 18, 2023

macintosh/macio-adb: check the return value of ioremap()



[ Upstream commit dbaa3105736d4d73063ea0a3b01cd7fafce924e6 ]

The function ioremap() in macio_init() can fail, so its return value
should be checked.

Fixes: 36874579 ("[PATCH] powerpc: macio-adb build fix")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: Xie Shaowen <studentxswpy@163.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220802074148.3213659-1-studentxswpy@163.com


Signed-off-by: Sasha Levin <sashal@kernel.org>

parent b29a2f1d

drivers/macintosh/macio-adb.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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);