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powerpc/pmac/smp: Add missing FROZEN hotplug notifier transitions

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The FROZEN transitions are used when a CPU suspends/resumes. In case
of a suspend/resume, only the up prepare (CPU_UP_PREPARE_FROZEN) is
handled. The error handling transition CPU_UP_CANCELED_FROZEN as well
as the CPU_ONLINE_FROZEN transition are not handled.

Masking the switch case action argument with ~CPU_TASKS_FROZEN, to
handle all FROZEN tasks the same way than the corresponding non frozen
tasks.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anna-Maria Gleixner 2016-04-04 11:30:01 +02:00 committed by Michael Ellerman
parent b0b5e5918a
commit c011926fcb
1 changed files with 1 additions and 2 deletions
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3
arch/powerpc/platforms/powermac/smp.c
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@ -857,9 +857,8 @@ static int smp_core99_cpu_notify(struct notifier_block *self,
{
int rc;
switch(action) {
switch(action & ~CPU_TASKS_FROZEN) {
case CPU_UP_PREPARE:
case CPU_UP_PREPARE_FROZEN:
/* Open i2c bus if it was used for tb sync */
if (pmac_tb_clock_chip_host) {
rc = pmac_i2c_open(pmac_tb_clock_chip_host, 1);