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Commit fce77c35 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/20161126231350.10321-20-bigeasy@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 1dd6c834

drivers/soc/fsl/qbman/bman_portal.c

+16 −30
Original line number Original line Diff line number Diff line
@@ -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;

}

}