# \[PATCH 4.9 046/207\] powerpc/85xx: Fix oops when mpc85xx\_smp\_guts\_ids node cannot be found - From: Greg Kroah-Hartman \ - Date: 2021-11-24 12:16:07 - List: stable - Page: https://ratatoskr.run/stable/2021/11/1583972 - Thread: https://ratatoskr.run/stable/2021/11/1583929/t.md ```text From: Xiaoming Ni 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: 56f1ba280719 ("powerpc/mpc85xx: refactor the PM operations") Cc: # v4.6+ Signed-off-by: Xiaoming Ni Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210929033646.39630-2-nixiaoming@huawei.com Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c @@ -98,9 +98,8 @@ 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; } ```