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HSI: core: switch port event notifier from atomic to blocking 

port events should be sent from process context after
irq_safe runtime pm flag is removed in omap-ssi.

Signed-off-By: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
hifive-unleashed-5.1
Sebastian Reichel 2016-04-30 18:08:06 +02:00
parent 2083057aac
commit de5a3774dd
2 changed files with 5 additions and 5 deletions
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8
drivers/hsi/hsi_core.c
View File

@ -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);

2
include/linux/hsi/hsi.h
View File

@ -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)