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path: root/drivers/misc/tifm_core.c
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Diffstat (limited to 'drivers/misc/tifm_core.c')
-rw-r--r--drivers/misc/tifm_core.c51
1 files changed, 34 insertions, 17 deletions
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index 6b2c447dc8e..ef8a97b819d 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -16,6 +16,7 @@
#define DRIVER_NAME "tifm_core"
#define DRIVER_VERSION "0.8"
+static struct workqueue_struct *workqueue;
static DEFINE_IDR(tifm_adapter_idr);
static DEFINE_SPINLOCK(tifm_adapter_lock);
@@ -184,8 +185,7 @@ void tifm_free_adapter(struct tifm_adapter *fm)
}
EXPORT_SYMBOL(tifm_free_adapter);
-int tifm_add_adapter(struct tifm_adapter *fm,
- int (*mediathreadfn)(void *data))
+int tifm_add_adapter(struct tifm_adapter *fm)
{
int rc;
@@ -197,16 +197,13 @@ int tifm_add_adapter(struct tifm_adapter *fm,
spin_unlock(&tifm_adapter_lock);
if (!rc) {
snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
- fm->media_switcher = kthread_create(mediathreadfn,
- fm, "tifm/%u", fm->id);
+ rc = class_device_add(&fm->cdev);
- if (!IS_ERR(fm->media_switcher))
- return class_device_add(&fm->cdev);
-
- spin_lock(&tifm_adapter_lock);
- idr_remove(&tifm_adapter_idr, fm->id);
- spin_unlock(&tifm_adapter_lock);
- rc = -ENOMEM;
+ if (rc) {
+ spin_lock(&tifm_adapter_lock);
+ idr_remove(&tifm_adapter_idr, fm->id);
+ spin_unlock(&tifm_adapter_lock);
+ }
}
return rc;
}
@@ -214,6 +211,7 @@ EXPORT_SYMBOL(tifm_add_adapter);
void tifm_remove_adapter(struct tifm_adapter *fm)
{
+ flush_workqueue(workqueue);
class_device_del(&fm->cdev);
spin_lock(&tifm_adapter_lock);
@@ -267,6 +265,12 @@ void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
}
EXPORT_SYMBOL(tifm_unmap_sg);
+void tifm_queue_work(struct work_struct *work)
+{
+ queue_work(workqueue, work);
+}
+EXPORT_SYMBOL(tifm_queue_work);
+
int tifm_register_driver(struct tifm_driver *drv)
{
drv->driver.bus = &tifm_bus_type;
@@ -283,13 +287,25 @@ EXPORT_SYMBOL(tifm_unregister_driver);
static int __init tifm_init(void)
{
- int rc = bus_register(&tifm_bus_type);
+ int rc;
- if (!rc) {
- rc = class_register(&tifm_adapter_class);
- if (rc)
- bus_unregister(&tifm_bus_type);
- }
+ workqueue = create_freezeable_workqueue("tifm");
+ if (!workqueue)
+ return -ENOMEM;
+
+ rc = bus_register(&tifm_bus_type);
+
+ if (rc)
+ goto err_out_wq;
+
+ rc = class_register(&tifm_adapter_class);
+ if (!rc)
+ return 0;
+
+ bus_unregister(&tifm_bus_type);
+
+err_out_wq:
+ destroy_workqueue(workqueue);
return rc;
}
@@ -298,6 +314,7 @@ static void __exit tifm_exit(void)
{
class_unregister(&tifm_adapter_class);
bus_unregister(&tifm_bus_type);
+ destroy_workqueue(workqueue);
}
subsys_initcall(tifm_init);