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[S390] css: move io_private to drv_data 

Use the subchannels drv_data to access io_subchannel_private
for io subchannels.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2011-03-15 17:08:27 +01:00 committed by Martin Schwidefsky
parent 97eb6bfcb9
commit f92519e83e
2 changed files with 14 additions and 7 deletions
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17
drivers/s390/cio/device.c
View File

@ -1030,6 +1030,7 @@ static void io_subchannel_init_fields(struct subchannel *sch)
*/
static int io_subchannel_probe(struct subchannel *sch)
{
struct io_subchannel_private *io_priv;
struct ccw_device *cdev;
int rc;
@ -1073,10 +1074,11 @@ static int io_subchannel_probe(struct subchannel *sch)
if (rc)
goto out_schedule;
/* Allocate I/O subchannel private data. */
sch->private = kzalloc(sizeof(struct io_subchannel_private),
GFP_KERNEL | GFP_DMA);
if (!sch->private)
io_priv = kzalloc(sizeof(*io_priv), GFP_KERNEL | GFP_DMA);
if (!io_priv)
goto out_schedule;
set_io_private(sch, io_priv);
css_schedule_eval(sch->schid);
return 0;
@ -1090,6 +1092,7 @@ out_schedule:
static int
io_subchannel_remove (struct subchannel *sch)
{
struct io_subchannel_private *io_priv = to_io_private(sch);
struct ccw_device *cdev;
cdev = sch_get_cdev(sch);
@ -1099,11 +1102,12 @@ io_subchannel_remove (struct subchannel *sch)
/* Set ccw device to not operational and drop reference. */
spin_lock_irq(cdev->ccwlock);
sch_set_cdev(sch, NULL);
set_io_private(sch, NULL);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irq(cdev->ccwlock);
ccw_device_unregister(cdev);
out_free:
kfree(sch->private);
kfree(io_priv);
sysfs_remove_group(&sch->dev.kobj, &io_subchannel_attr_group);
return 0;
}
@ -1553,11 +1557,12 @@ spinlock_t * cio_get_console_lock(void)
static int ccw_device_console_enable(struct ccw_device *cdev,
struct subchannel *sch)
{
struct io_subchannel_private *io_priv = cio_get_console_priv();
int rc;
/* Attach subchannel private data. */
sch->private = cio_get_console_priv();
memset(sch->private, 0, sizeof(struct io_subchannel_private));
memset(io_priv, 0, sizeof(*io_priv));
set_io_private(sch, io_priv);
io_subchannel_init_fields(sch);
rc = cio_commit_config(sch);
if (rc)

4
drivers/s390/cio/io_sch.h
View File

@ -18,7 +18,9 @@ struct io_subchannel_private {
} __packed options;
} __aligned(8);
#define to_io_private(n) ((struct io_subchannel_private *)n->private)
#define to_io_private(n) ((struct io_subchannel_private *) \
dev_get_drvdata(&(n)->dev))
#define set_io_private(n, p) (dev_set_drvdata(&(n)->dev, p))
static inline struct ccw_device *sch_get_cdev(struct subchannel *sch)
{