This is a note to let you know that I've just added the patch titled macintosh/macio-adb: check the return value of ioremap() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: macintosh-macio-adb-check-the-return-value-of-iorema.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 0b563d43589f4baebcb4aa1103837aa745c46d6b Author: Xie Shaowen <studentxswpy@xxxxxxx> Date: Tue Aug 2 15:41:48 2022 +0800 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: 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> diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c index d4759db002c6..defe65f51fa2 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);