diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/css.c | 17 | ||||
| -rw-r--r-- | drivers/s390/cio/css.h | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/device.c | 18 |
3 files changed, 25 insertions, 12 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 59c4b94cdb4..f018835afdf 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -1013,6 +1013,15 @@ static int __init channel_subsystem_init(void) } subsys_initcall(channel_subsystem_init); +static int css_settle(struct device_driver *drv, void *unused) +{ + struct css_driver *cssdrv = to_cssdriver(drv); + + if (cssdrv->settle) + cssdrv->settle(); + return 0; +} + /* * Wait for the initialization of devices to finish, to make sure we are * done with our setup if the search for the root device starts. @@ -1024,12 +1033,8 @@ static int __init channel_subsystem_init_sync(void) /* Wait for the evaluation of subchannels to finish. */ wait_event(css_eval_wq, atomic_read(&css_eval_scheduled) == 0); - /* Wait for the initialization of ccw devices to finish. */ - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - flush_workqueue(ccw_device_work); - - return 0; + /* Wait for the subchannel type specific initialization to finish */ + return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); } subsys_initcall_sync(channel_subsystem_init_sync); diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 9763eeec745..54acdaade86 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -75,6 +75,7 @@ struct chp_link; * @freeze: callback for freezing during hibernation snapshotting * @thaw: undo work done in @freeze * @restore: callback for restoring after hibernation + * @settle: wait for asynchronous work to finish * @name: name of the device driver */ struct css_driver { @@ -92,6 +93,7 @@ struct css_driver { int (*freeze)(struct subchannel *); int (*thaw) (struct subchannel *); int (*restore)(struct subchannel *); + void (*settle)(void); const char *name; }; diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 4093adc12f2..f780bdd3a04 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -131,6 +131,10 @@ static void io_subchannel_shutdown(struct subchannel *); static int io_subchannel_sch_event(struct subchannel *, int); static int io_subchannel_chp_event(struct subchannel *, struct chp_link *, int); +static void recovery_func(unsigned long data); +struct workqueue_struct *ccw_device_work; +wait_queue_head_t ccw_device_init_wq; +atomic_t ccw_device_init_count; static struct css_device_id io_subchannel_ids[] = { { .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, }, @@ -151,6 +155,13 @@ static int io_subchannel_prepare(struct subchannel *sch) return 0; } +static void io_subchannel_settle(void) +{ + wait_event(ccw_device_init_wq, + atomic_read(&ccw_device_init_count) == 0); + flush_workqueue(ccw_device_work); +} + static struct css_driver io_subchannel_driver = { .owner = THIS_MODULE, .subchannel_type = io_subchannel_ids, @@ -162,14 +173,9 @@ static struct css_driver io_subchannel_driver = { .remove = io_subchannel_remove, .shutdown = io_subchannel_shutdown, .prepare = io_subchannel_prepare, + .settle = io_subchannel_settle, }; -struct workqueue_struct *ccw_device_work; -wait_queue_head_t ccw_device_init_wq; -atomic_t ccw_device_init_count; - -static void recovery_func(unsigned long data); - int __init io_subchannel_init(void) { int ret; |