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mailbox: arm_mhuv2: Fix return value check in mhuv2_probe()

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[ 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: 5a6338cce9 ("mailbox: arm_mhuv2: Add driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang 2022-11-25 14:35:48 +08:00 committed by Greg Kroah-Hartman
parent cca61191a8
commit 525e54789c
1 changed files with 2 additions and 2 deletions
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4
drivers/mailbox/arm_mhuv2.c
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@ -1062,8 +1062,8 @@ static int mhuv2_probe(struct amba_device *adev, const struct amba_id *id)
int ret = -EINVAL; int ret = -EINVAL;
reg = devm_of_iomap(dev, dev->of_node, 0, NULL); reg = devm_of_iomap(dev, dev->of_node, 0, NULL);
if (!reg) if (IS_ERR(reg))
return -ENOMEM; return PTR_ERR(reg);
mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL); mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL);
if (!mhu) if (!mhu)