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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/20161126231350.10321-21-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2016-11-27 00:13:48 +01:00 committed by Thomas Gleixner
parent fce77c3562
commit 1f759d328f
1 changed files with 12 additions and 27 deletions
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39
drivers/soc/fsl/qbman/qman_portal.c
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@ -179,7 +179,7 @@ static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
qman_set_sdest(pcfg->channel, cpu); qman_set_sdest(pcfg->channel, cpu);
} }
static void qman_offline_cpu(unsigned int cpu) static int qman_offline_cpu(unsigned int cpu)
{ {
struct qman_portal *p; struct qman_portal *p;
const struct qm_portal_config *pcfg; const struct qm_portal_config *pcfg;
@ -192,9 +192,10 @@ static void qman_offline_cpu(unsigned int cpu)
qman_portal_update_sdest(pcfg, 0); qman_portal_update_sdest(pcfg, 0);
} }
} }
return 0;
} }
static void qman_online_cpu(unsigned int cpu) static int qman_online_cpu(unsigned int cpu)
{ {
struct qman_portal *p; struct qman_portal *p;
const struct qm_portal_config *pcfg; const struct qm_portal_config *pcfg;
@ -207,31 +208,9 @@ static void qman_online_cpu(unsigned int cpu)
qman_portal_update_sdest(pcfg, cpu); qman_portal_update_sdest(pcfg, cpu);
} }
} }
return 0;
} }
static int qman_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:
qman_online_cpu(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
qman_offline_cpu(cpu);
default:
break;
}
return NOTIFY_OK;
}
static struct notifier_block qman_hotplug_cpu_notifier = {
.notifier_call = qman_hotplug_cpu_callback,
};
static int qman_portal_probe(struct platform_device *pdev) static int qman_portal_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
@ -346,8 +325,14 @@ static int __init qman_portal_driver_register(struct platform_driver *drv)
if (ret < 0) if (ret < 0)
return ret; return ret;
register_hotcpu_notifier(&qman_hotplug_cpu_notifier); ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
"soc/qman_portal:online",
qman_online_cpu, qman_offline_cpu);
if (ret < 0) {
pr_err("qman: failed to register hotplug callbacks.\n");
platform_driver_unregister(drv);
return ret;
}
return 0; return 0;
} }