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powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found

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commit 3c2172c1c47b4079c29f0e6637d764a99355ebcd upstream.

When the field described in mpc85xx_smp_guts_ids[] is not configured in
dtb, the mpc85xx_setup_pmc() does not assign a value to the "guts"
variable. As a result, the oops is triggered when
mpc85xx_freeze_time_base() is executed.

Fixes: 56f1ba2807 ("powerpc/mpc85xx: refactor the PM operations")
Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210929033646.39630-2-nixiaoming@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xiaoming Ni 2021-09-29 11:36:45 +08:00 committed by Greg Kroah-Hartman
parent 875609ad80
commit 93fccb1f89
1 changed files with 1 additions and 2 deletions
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arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c
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@ -94,9 +94,8 @@ int __init mpc85xx_setup_pmc(void)
pr_err("Could not map guts node address\n");
return -ENOMEM;
}
qoriq_pm_ops = &mpc85xx_pm_ops;
}
qoriq_pm_ops = &mpc85xx_pm_ops;
return 0;
}