Commit d3b3c637 authored by Helge Deller's avatar Helge Deller
Browse files

parisc: Fix crash with nr_cpus=1 option 



John David Anglin reported that giving "nr_cpus=1" on the command
line causes a crash, while "maxcpus=1" works.

Reported-by: default avatarJohn David Anglin <dave.anglin@bell.net>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.18+
parent ce9ecca0

arch/parisc/kernel/smp.c

+3 −1
Original line number Diff line number Diff line
@@ -440,7 +440,9 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) 
	if (cpu_online(cpu))

		return 0;



	if (num_online_cpus() < setup_max_cpus && smp_boot_one_cpu(cpu, tidle))

	if (num_online_cpus() < nr_cpu_ids &&

		num_online_cpus() < setup_max_cpus &&

		smp_boot_one_cpu(cpu, tidle))

		return -EIO;



	return cpu_online(cpu) ? 0 : -EIO;