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    Subject[RFC 08/19] HSI: core: switch port event notifier from atomic to blocking
    Date
    port events should be sent from process context after
    irq_safe runtime pm flag is removed in omap-ssi.
    ---
    drivers/hsi/hsi_core.c | 8 ++++----
    include/linux/hsi/hsi.h | 2 +-
    2 files changed, 5 insertions(+), 5 deletions(-)

    diff --git a/drivers/hsi/hsi_core.c b/drivers/hsi/hsi_core.c
    index d7ce07ad67f3..c2a2a9795b0b 100644
    --- a/drivers/hsi/hsi_core.c
    +++ b/drivers/hsi/hsi_core.c
    @@ -507,7 +507,7 @@ struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags)
    port[i]->stop_tx = hsi_dummy_cl;
    port[i]->release = hsi_dummy_cl;
    mutex_init(&port[i]->lock);
    - ATOMIC_INIT_NOTIFIER_HEAD(&port[i]->n_head);
    + BLOCKING_INIT_NOTIFIER_HEAD(&port[i]->n_head);
    dev_set_name(&port[i]->device, "port%d", i);
    hsi->port[i]->device.release = hsi_port_release;
    device_initialize(&hsi->port[i]->device);
    @@ -689,7 +689,7 @@ int hsi_register_port_event(struct hsi_client *cl,
    cl->ehandler = handler;
    cl->nb.notifier_call = hsi_event_notifier_call;

    - return atomic_notifier_chain_register(&port->n_head, &cl->nb);
    + return blocking_notifier_chain_register(&port->n_head, &cl->nb);
    }
    EXPORT_SYMBOL_GPL(hsi_register_port_event);

    @@ -709,7 +709,7 @@ int hsi_unregister_port_event(struct hsi_client *cl)

    WARN_ON(!hsi_port_claimed(cl));

    - err = atomic_notifier_chain_unregister(&port->n_head, &cl->nb);
    + err = blocking_notifier_chain_unregister(&port->n_head, &cl->nb);
    if (!err)
    cl->ehandler = NULL;

    @@ -734,7 +734,7 @@ EXPORT_SYMBOL_GPL(hsi_unregister_port_event);
    */
    int hsi_event(struct hsi_port *port, unsigned long event)
    {
    - return atomic_notifier_call_chain(&port->n_head, event, NULL);
    + return blocking_notifier_call_chain(&port->n_head, event, NULL);
    }
    EXPORT_SYMBOL_GPL(hsi_event);

    diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h
    index 2790591c77cf..57402544b53f 100644
    --- a/include/linux/hsi/hsi.h
    +++ b/include/linux/hsi/hsi.h
    @@ -246,7 +246,7 @@ struct hsi_port {
    int (*stop_tx)(struct hsi_client *cl);
    int (*release)(struct hsi_client *cl);
    /* private */
    - struct atomic_notifier_head n_head;
    + struct blocking_notifier_head n_head;
    };

    #define to_hsi_port(dev) container_of(dev, struct hsi_port, device)
    --
    2.8.1
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