diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/cio/device.c | 57 | ||||
| -rw-r--r-- | drivers/s390/cio/device.h | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 20 |
3 files changed, 15 insertions, 64 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index ee3450667687..7ad6bfb2e55e 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -486,18 +486,9 @@ static int online_store_handle_offline(struct ccw_device *cdev) static int online_store_recog_and_online(struct ccw_device *cdev) { - int ret; - /* Do device recognition, if needed. */ if (cdev->private->state == DEV_STATE_BOXED) { - ret = ccw_device_recognition(cdev); - if (ret) { - CIO_MSG_EVENT(0, "Couldn't start recognition " - "for device 0.%x.%04x (ret=%d)\n", - cdev->private->dev_id.ssid, - cdev->private->dev_id.devno, ret); - return ret; - } + ccw_device_recognition(cdev); wait_event(cdev->private->wait_q, cdev->private->flags.recog_done); if (cdev->private->state != DEV_STATE_OFFLINE) @@ -746,7 +737,7 @@ static struct ccw_device * io_subchannel_create_ccwdev(struct subchannel *sch) return cdev; } -static int io_subchannel_recog(struct ccw_device *, struct subchannel *); +static void io_subchannel_recog(struct ccw_device *, struct subchannel *); static void sch_create_and_recog_new_device(struct subchannel *sch) { @@ -760,16 +751,7 @@ static void sch_create_and_recog_new_device(struct subchannel *sch) return; } /* Start recognition for the new ccw device. */ - if (io_subchannel_recog(cdev, sch)) { - spin_lock_irq(sch->lock); - sch_set_cdev(sch, NULL); - spin_unlock_irq(sch->lock); - css_sch_device_unregister(sch); - /* Put reference from io_subchannel_create_ccwdev(). */ - put_device(&sch->dev); - /* Give up initial reference. */ - put_device(&cdev->dev); - } + io_subchannel_recog(cdev, sch); } /* @@ -879,10 +861,8 @@ io_subchannel_recog_done(struct ccw_device *cdev) } } -static int -io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) +static void io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) { - int rc; struct ccw_device_private *priv; cdev->ccwlock = sch->lock; @@ -903,13 +883,8 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) /* Start async. device sensing. */ spin_lock_irq(sch->lock); sch_set_cdev(sch, cdev); - rc = ccw_device_recognition(cdev); + ccw_device_recognition(cdev); spin_unlock_irq(sch->lock); - if (rc) { - if (atomic_dec_and_test(&ccw_device_init_count)) - wake_up(&ccw_device_init_wq); - } - return rc; } static int ccw_device_move_to_sch(struct ccw_device *cdev, @@ -1528,10 +1503,7 @@ static int ccw_device_console_enable(struct ccw_device *cdev, sch->driver = &io_subchannel_driver; /* Initialize the ccw_device structure. */ cdev->dev.parent= &sch->dev; - rc = io_subchannel_recog(cdev, sch); - if (rc) - return rc; - + io_subchannel_recog(cdev, sch); /* Now wait for the async. recognition to come to an end. */ spin_lock_irq(cdev->ccwlock); while (!dev_fsm_final_state(cdev)) @@ -1547,7 +1519,7 @@ static int ccw_device_console_enable(struct ccw_device *cdev, rc = 0; out_unlock: spin_unlock_irq(cdev->ccwlock); - return 0; + return rc; } struct ccw_device * @@ -1789,7 +1761,6 @@ static int ccw_device_pm_thaw(struct device *dev) static void __ccw_device_pm_restore(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); - int ret; if (cio_is_console(sch->schid)) goto out; @@ -1799,22 +1770,10 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev) */ spin_lock_irq(sch->lock); cdev->private->flags.resuming = 1; - ret = ccw_device_recognition(cdev); + ccw_device_recognition(cdev); spin_unlock_irq(sch->lock); - if (ret) { - CIO_MSG_EVENT(0, "Couldn't start recognition for device " - "0.%x.%04x (ret=%d)\n", - cdev->private->dev_id.ssid, - cdev->private->dev_id.devno, ret); - spin_lock_irq(sch->lock); - cdev->private->state = DEV_STATE_DISCONNECTED; - spin_unlock_irq(sch->lock); - /* notify driver after the resume cb */ - goto out; - } wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev) || cdev->private->state == DEV_STATE_DISCONNECTED); - out: cdev->private->flags.resuming = 0; } diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index adaa27efc59e..78662e05d317 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -83,7 +83,7 @@ int ccw_device_cancel_halt_clear(struct ccw_device *); int ccw_device_is_orphan(struct ccw_device *); -int ccw_device_recognition(struct ccw_device *); +void ccw_device_recognition(struct ccw_device *); int ccw_device_online(struct ccw_device *); int ccw_device_offline(struct ccw_device *); void ccw_device_update_sense_data(struct ccw_device *); diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index b163743bf586..83adb919648f 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -498,20 +498,9 @@ ccw_device_sense_pgid_done(struct ccw_device *cdev, int err) /* * Start device recognition. */ -int -ccw_device_recognition(struct ccw_device *cdev) +void ccw_device_recognition(struct ccw_device *cdev) { - struct subchannel *sch; - int ret; - - sch = to_subchannel(cdev->dev.parent); - ret = cio_enable_subchannel(sch, (u32)(addr_t)sch); - if (ret != 0) - /* Couldn't enable the subchannel for i/o. Sick device. */ - return ret; - - /* After 60s the device recognition is considered to have failed. */ - ccw_device_set_timeout(cdev, 60*HZ); + struct subchannel *sch = to_subchannel(cdev->dev.parent); /* * We used to start here with a sense pgid to find out whether a device @@ -523,8 +512,11 @@ ccw_device_recognition(struct ccw_device *cdev) */ cdev->private->flags.recog_done = 0; cdev->private->state = DEV_STATE_SENSE_ID; + if (cio_enable_subchannel(sch, (u32) (addr_t) sch)) { + ccw_device_recog_done(cdev, DEV_STATE_NOT_OPER); + return; + } ccw_device_sense_id_start(cdev); - return 0; } /* |
