Commit-ID: 1f759d328f6d8c06b5db55374b028565187deaca
Gitweb: http://git.kernel.org/tip/1f759d328f6d8c06b5db55374b028565187deaca
Author: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
AuthorDate: Sun, 27 Nov 2016 00:13:48 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 2 Dec 2016 00:52:40 +0100
soc/fsl/qbman: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Scott Wood <oss@xxxxxxxxxxxx>
Cc: Claudiu Manoil <claudiu.manoil@xxxxxxx>
Cc: rt@xxxxxxxxxxxxx
Cc: Roy Pledge <roy.pledge@xxxxxxx>
Link: http://lkml.kernel.org/r/20161126231350.10321-21-bigeasy@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
drivers/soc/fsl/qbman/qman_portal.c | 39 ++++++++++++-------------------------
1 file changed, 12 insertions(+), 27 deletions(-)
diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c
index 1486143..d068e48 100644
--- a/drivers/soc/fsl/qbman/qman_portal.c
+++ b/drivers/soc/fsl/qbman/qman_portal.c
@@ -179,7 +179,7 @@ static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
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;
const struct qm_portal_config *pcfg;
@@ -192,9 +192,10 @@ static void qman_offline_cpu(unsigned int cpu)
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;
const struct qm_portal_config *pcfg;
@@ -207,31 +208,9 @@ static void qman_online_cpu(unsigned int 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)
{
struct device *dev = &pdev->dev;
@@ -346,8 +325,14 @@ static int __init qman_portal_driver_register(struct platform_driver *drv)
if (ret < 0)
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;
}
--
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