[tip: smp/core] powerpc: Replace cpu_up/down() with add/remove_cpu()

[tip-bot2 for Qais Yousef]

The following commit has been merged into the smp/core branch of tip:

Commit-ID:     4d37cc2dc3dfffb782663c46cc0ee2c483e2f2ba
Gitweb:        https://git.kernel.org/tip/4d37cc2dc3dfffb782663c46cc0ee2c483e2f2ba
Author:        Qais Yousef <qais.yousef@xxxxxxx>
AuthorDate:    Mon, 23 Mar 2020 13:51:03 
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Wed, 25 Mar 2020 12:59:35 +01:00

powerpc: Replace cpu_up/down() with add/remove_cpu()

The core device API performs extra housekeeping bits that are missing
from directly calling cpu_up/down.

See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and
serialization during LPM") for an example description of what might go
wrong.

This also prepares to make cpu_up/down() a private interface of the CPU
subsystem.

Signed-off-by: Qais Yousef <qais.yousef@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20200323135110.30522-11-qais.yousef@xxxxxxx

---
 arch/powerpc/kexec/core_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 04a7cba..b418409 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -212,7 +212,7 @@ static void wake_offline_cpus(void)
 		if (!cpu_online(cpu)) {
 			printk(KERN_INFO "kexec: Waking offline cpu %d.\n",
 			       cpu);
-			WARN_ON(cpu_up(cpu));
+			WARN_ON(add_cpu(cpu));
 		}
 	}
 }