diff options
author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2015-10-26 12:38:13 +0100 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-27 09:34:44 +0100 |
commit | ef12cb904e096335ef179bfe30e637a9c2464343 (patch) | |
tree | a7c287908667bbcb3dbd3aafc50e468252090141 /drivers/s390/cio/device_ops.c | |
parent | 8421d212e831cb03ba65bada57a733ad875286bf (diff) | |
download | linux-ef12cb904e096335ef179bfe30e637a9c2464343.tar.bz2 |
s390/cio: move ccw_device_stlck functions
device_ops.c should only contain functions that are called by ccw device
drivers. Move the cio internal functions that handle unconditional
reserve + release to device_pgid.c
Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device_ops.c')
-rw-r--r-- | drivers/s390/cio/device_ops.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 5be77254547c..a69f702a2fcc 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -456,67 +456,6 @@ __u8 ccw_device_get_path_mask(struct ccw_device *cdev) return sch->lpm; } -struct stlck_data { - struct completion done; - int rc; -}; - -void ccw_device_stlck_done(struct ccw_device *cdev, void *data, int rc) -{ - struct stlck_data *sdata = data; - - sdata->rc = rc; - complete(&sdata->done); -} - -/* - * Perform unconditional reserve + release. - */ -int ccw_device_stlck(struct ccw_device *cdev) -{ - struct subchannel *sch = to_subchannel(cdev->dev.parent); - struct stlck_data data; - u8 *buffer; - int rc; - - /* Check if steal lock operation is valid for this device. */ - if (cdev->drv) { - if (!cdev->private->options.force) - return -EINVAL; - } - buffer = kzalloc(64, GFP_DMA | GFP_KERNEL); - if (!buffer) - return -ENOMEM; - init_completion(&data.done); - data.rc = -EIO; - spin_lock_irq(sch->lock); - rc = cio_enable_subchannel(sch, (u32) (addr_t) sch); - if (rc) - goto out_unlock; - /* Perform operation. */ - cdev->private->state = DEV_STATE_STEAL_LOCK; - ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]); - spin_unlock_irq(sch->lock); - /* Wait for operation to finish. */ - if (wait_for_completion_interruptible(&data.done)) { - /* Got a signal. */ - spin_lock_irq(sch->lock); - ccw_request_cancel(cdev); - spin_unlock_irq(sch->lock); - wait_for_completion(&data.done); - } - rc = data.rc; - /* Check results. */ - spin_lock_irq(sch->lock); - cio_disable_subchannel(sch); - cdev->private->state = DEV_STATE_BOXED; -out_unlock: - spin_unlock_irq(sch->lock); - kfree(buffer); - - return rc; -} - /** * chp_get_chp_desc - return newly allocated channel-path descriptor * @cdev: device to obtain the descriptor for |