This is a note to let you know that I've just added the patch titled
mailbox: arm_mhuv2: Fix return value check in mhuv2_probe()
to the 5.15-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:
mailbox-arm_mhuv2-fix-return-value-check-in-mhuv2_pr.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ce099e496669371fe7324deee4791c0c9a9f3597
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Fri Nov 25 14:35:48 2022 +0800
mailbox: arm_mhuv2: Fix return value check in mhuv2_probe()
[ Upstream commit 165b7643f2df890066b1b4e8a387888a600ca9bf ]
If devm_of_iomap() fails, it returns ERR_PTR() and never
return NULL, so replace NULL pointer check with IS_ERR()
to fix this problem.
Fixes: 5a6338cce9f4 ("mailbox: arm_mhuv2: Add driver")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Jassi Brar <jaswinder.singh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mailbox/arm_mhuv2.c b/drivers/mailbox/arm_mhuv2.c
index d997f8ebfa98..3af15083a25a 100644
--- a/drivers/mailbox/arm_mhuv2.c
+++ b/drivers/mailbox/arm_mhuv2.c
@@ -1061,8 +1061,8 @@ static int mhuv2_probe(struct amba_device *adev, const struct amba_id *id)
int ret = -EINVAL;
reg = devm_of_iomap(dev, dev->of_node, 0, NULL);
- if (!reg)
- return -ENOMEM;
+ if (IS_ERR(reg))
+ return PTR_ERR(reg);
mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL);
if (!mhu)
