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soc/fsl/qbman: Convert to hotplug state machine

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Install the callbacks via the state machine.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Scott Wood <oss@buserror.net>
Cc: Claudiu Manoil <claudiu.manoil@nxp.com>
Cc: rt@linutronix.de
Cc: Roy Pledge <roy.pledge@nxp.com>
Link: http://lkml.kernel.org/r/20161126231350.10321-20-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2016-11-27 00:13:47 +01:00 committed by Thomas Gleixner
parent 1dd6c834fa
commit fce77c3562
1 changed files with 16 additions and 30 deletions
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46
drivers/soc/fsl/qbman/bman_portal.c
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@ -53,58 +53,38 @@ static struct bman_portal *init_pcfg(struct bm_portal_config *pcfg)
return p; return p;
} }
static void bman_offline_cpu(unsigned int cpu) static int bman_offline_cpu(unsigned int cpu)
{ {
struct bman_portal *p = affine_bportals[cpu]; struct bman_portal *p = affine_bportals[cpu];
const struct bm_portal_config *pcfg; const struct bm_portal_config *pcfg;
if (!p) if (!p)
return; return 0;
pcfg = bman_get_bm_portal_config(p); pcfg = bman_get_bm_portal_config(p);
if (!pcfg) if (!pcfg)
return; return 0;
irq_set_affinity(pcfg->irq, cpumask_of(0)); irq_set_affinity(pcfg->irq, cpumask_of(0));
return 0;
} }
static void bman_online_cpu(unsigned int cpu) static int bman_online_cpu(unsigned int cpu)
{ {
struct bman_portal *p = affine_bportals[cpu]; struct bman_portal *p = affine_bportals[cpu];
const struct bm_portal_config *pcfg; const struct bm_portal_config *pcfg;
if (!p) if (!p)
return; return 0;
pcfg = bman_get_bm_portal_config(p); pcfg = bman_get_bm_portal_config(p);
if (!pcfg) if (!pcfg)
return; return 0;
irq_set_affinity(pcfg->irq, cpumask_of(cpu)); irq_set_affinity(pcfg->irq, cpumask_of(cpu));
return 0;
} }
static int bman_hotplug_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
bman_online_cpu(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
bman_offline_cpu(cpu);
}
return NOTIFY_OK;
}
static struct notifier_block bman_hotplug_cpu_notifier = {
.notifier_call = bman_hotplug_cpu_callback,
};
static int bman_portal_probe(struct platform_device *pdev) static int bman_portal_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
@ -210,8 +190,14 @@ static int __init bman_portal_driver_register(struct platform_driver *drv)
if (ret < 0) if (ret < 0)
return ret; return ret;
register_hotcpu_notifier(&bman_hotplug_cpu_notifier); ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
"soc/qbman_portal:online",
bman_online_cpu, bman_offline_cpu);
if (ret < 0) {
pr_err("bman: failed to register hotplug callbacks.\n");
platform_driver_unregister(drv);
return ret;
}
return 0; return 0;
} }