This is a note to let you know that I've just added the patch titled powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found to the 5.14-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: powerpc-85xx-fix-oops-when-mpc85xx_smp_guts_ids-node-cannot-be-found.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3c2172c1c47b4079c29f0e6637d764a99355ebcd Mon Sep 17 00:00:00 2001 From: Xiaoming Ni <nixiaoming@xxxxxxxxxx> Date: Wed, 29 Sep 2021 11:36:45 +0800 Subject: powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found From: Xiaoming Ni <nixiaoming@xxxxxxxxxx> 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: stable@xxxxxxxxxxxxxxx # v4.6+ Signed-off-by: Xiaoming Ni <nixiaoming@xxxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210929033646.39630-2-nixiaoming@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 @@ -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; } Patches currently in stable-queue which might be from nixiaoming@xxxxxxxxxx are queue-5.14/powerpc-85xx-fix-oops-when-mpc85xx_smp_guts_ids-node-cannot-be-found.patch