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-rw-r--r--drivers/s390/cio/device.c57
-rw-r--r--drivers/s390/cio/device.h2
-rw-r--r--drivers/s390/cio/device_fsm.c20
3 files changed, 15 insertions, 64 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index ee345066768..7ad6bfb2e55 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 adaa27efc59..78662e05d31 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 b163743bf58..83adb919648 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;
}
/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 12:59:36 +0000