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soc/fsl/qbman: Convert to hotplug state machine
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>
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fce77c3562
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1 changed files with 12 additions and 27 deletions
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@ -179,7 +179,7 @@ static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
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qman_set_sdest(pcfg->channel, cpu);
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}
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static void qman_offline_cpu(unsigned int cpu)
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static int qman_offline_cpu(unsigned int cpu)
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{
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struct qman_portal *p;
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const struct qm_portal_config *pcfg;
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@ -192,9 +192,10 @@ static void qman_offline_cpu(unsigned int cpu)
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qman_portal_update_sdest(pcfg, 0);
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}
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}
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return 0;
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}
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static void qman_online_cpu(unsigned int cpu)
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static int qman_online_cpu(unsigned int cpu)
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{
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struct qman_portal *p;
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const struct qm_portal_config *pcfg;
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@ -207,31 +208,9 @@ static void qman_online_cpu(unsigned int cpu)
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qman_portal_update_sdest(pcfg, cpu);
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}
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}
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return 0;
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}
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static int qman_hotplug_cpu_callback(struct notifier_block *nfb,
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unsigned long action, void *hcpu)
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{
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unsigned int cpu = (unsigned long)hcpu;
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switch (action) {
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case CPU_ONLINE:
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case CPU_ONLINE_FROZEN:
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qman_online_cpu(cpu);
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break;
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case CPU_DOWN_PREPARE:
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case CPU_DOWN_PREPARE_FROZEN:
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qman_offline_cpu(cpu);
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default:
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break;
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}
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return NOTIFY_OK;
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}
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static struct notifier_block qman_hotplug_cpu_notifier = {
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.notifier_call = qman_hotplug_cpu_callback,
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};
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static int qman_portal_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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@ -346,8 +325,14 @@ static int __init qman_portal_driver_register(struct platform_driver *drv)
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if (ret < 0)
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return ret;
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register_hotcpu_notifier(&qman_hotplug_cpu_notifier);
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ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
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"soc/qman_portal:online",
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qman_online_cpu, qman_offline_cpu);
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if (ret < 0) {
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pr_err("qman: failed to register hotplug callbacks.\n");
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platform_driver_unregister(drv);
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return ret;
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}
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return 0;
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}
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