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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-12-08 15:54:26 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-12-08 15:54:26 +0100 |
| commit | 2ec2298412e1ab4674b3780005058d4f0b8bd858 (patch) | |
| tree | 7d48542e666636de17ac18e50ed33b4639be43fb /drivers/s390/cio/device.c | |
| parent | 7674da77cb2d27ae6559c55151da171ceb02beb4 (diff) | |
| download | linux-2ec2298412e1ab4674b3780005058d4f0b8bd858.tar.gz linux-2ec2298412e1ab4674b3780005058d4f0b8bd858.tar.bz2 linux-2ec2298412e1ab4674b3780005058d4f0b8bd858.zip | |
[S390] subchannel lock conversion.
Convert the subchannel lock to a pointer to a lock. Needed for the dynamic
subchannel mapping patch.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device.c')
| -rw-r--r-- | drivers/s390/cio/device.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index e644fd6905ee..9a31239fe028 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -774,9 +774,9 @@ io_subchannel_register(struct work_struct *work) printk (KERN_WARNING "%s: could not register %s\n", __func__, cdev->dev.bus_id); put_device(&cdev->dev); - spin_lock_irqsave(&sch->lock, flags); + spin_lock_irqsave(sch->lock, flags); sch->dev.driver_data = NULL; - spin_unlock_irqrestore(&sch->lock, flags); + spin_unlock_irqrestore(sch->lock, flags); kfree (cdev->private); kfree (cdev); put_device(&sch->dev); @@ -860,7 +860,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) sch->dev.driver_data = cdev; sch->driver = &io_subchannel_driver; - cdev->ccwlock = &sch->lock; + cdev->ccwlock = sch->lock; /* Init private data. */ priv = cdev->private; @@ -880,9 +880,9 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) atomic_inc(&ccw_device_init_count); /* Start async. device sensing. */ - spin_lock_irq(&sch->lock); + spin_lock_irq(sch->lock); rc = ccw_device_recognition(cdev); - spin_unlock_irq(&sch->lock); + spin_unlock_irq(sch->lock); if (rc) { if (atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); @@ -924,9 +924,9 @@ io_subchannel_probe (struct subchannel *sch) rc = io_subchannel_recog(cdev, sch); if (rc) { - spin_lock_irqsave(&sch->lock, flags); + spin_lock_irqsave(sch->lock, flags); sch->dev.driver_data = NULL; - spin_unlock_irqrestore(&sch->lock, flags); + spin_unlock_irqrestore(sch->lock, flags); if (cdev->dev.release) cdev->dev.release(&cdev->dev); } @@ -1036,6 +1036,13 @@ static struct ccw_device console_cdev; static struct ccw_device_private console_private; static int console_cdev_in_use; +static DEFINE_SPINLOCK(ccw_console_lock); + +spinlock_t * cio_get_console_lock(void) +{ + return &ccw_console_lock; +} + static int ccw_device_console_enable (struct ccw_device *cdev, struct subchannel *sch) { |