Commit-ID: fce77c3562eccdd8002c9c7947f00af70e00a375
Gitweb: http://git.kernel.org/tip/fce77c3562eccdd8002c9c7947f00af70e00a375
Author: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
AuthorDate: Sun, 27 Nov 2016 00:13:47 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 2 Dec 2016 00:52:39 +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/20161126231350.10321-20-bigeasy@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
drivers/soc/fsl/qbman/bman_portal.c | 46 +++++++++++++------------------------
1 file changed, 16 insertions(+), 30 deletions(-)
diff --git a/drivers/soc/fsl/qbman/bman_portal.c b/drivers/soc/fsl/qbman/bman_portal.c
index 6579cc1..986f646 100644
--- a/drivers/soc/fsl/qbman/bman_portal.c
+++ b/drivers/soc/fsl/qbman/bman_portal.c
@@ -53,58 +53,38 @@ static struct bman_portal *init_pcfg(struct bm_portal_config *pcfg)
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];
const struct bm_portal_config *pcfg;
if (!p)
- return;
+ return 0;
pcfg = bman_get_bm_portal_config(p);
if (!pcfg)
- return;
+ return 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];
const struct bm_portal_config *pcfg;
if (!p)
- return;
+ return 0;
pcfg = bman_get_bm_portal_config(p);
if (!pcfg)
- return;
+ return 0;
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)
{
struct device *dev = &pdev->dev;
@@ -210,8 +190,14 @@ static int __init bman_portal_driver_register(struct platform_driver *drv)
if (ret < 0)
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;
}
--
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