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Commit 1f759d32 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Thomas Gleixner
Browse files

soc/fsl/qbman: Convert to hotplug state machine 



Install the callbacks via the state machine.

Signed-off-by: default avatarSebastian 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: default avatarThomas Gleixner <tglx@linutronix.de>
parent fce77c35

drivers/soc/fsl/qbman/qman_portal.c

+12 −27
Original line number Original line Diff line number Diff line
@@ -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;

}

}