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Subject[patch 11/47] cio: Use dev_{g,s}et_drvdata().
From: Cornelia Huck <cornelia.huck@de.ibm.com>

Also define helpers sch_{g,s}et_cdev() to make the intention more
clear.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

drivers/s390/cio/ccwgroup.c | 14 +++++++-------
drivers/s390/cio/device.c | 36 ++++++++++++++++++------------------
drivers/s390/cio/device_fsm.c | 26 +++++++++++++-------------
drivers/s390/cio/io_sch.h | 2 ++
4 files changed, 40 insertions(+), 38 deletions(-)

Index: quilt-2.6/drivers/s390/cio/ccwgroup.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/ccwgroup.c
+++ quilt-2.6/drivers/s390/cio/ccwgroup.c
@@ -111,7 +111,7 @@ ccwgroup_release (struct device *dev)
gdev = to_ccwgroupdev(dev);

for (i = 0; i < gdev->count; i++) {
- gdev->cdev[i]->dev.driver_data = NULL;
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
kfree(gdev);
@@ -196,11 +196,11 @@ int ccwgroup_create(struct device *root,
goto error;
}
/* Don't allow a device to belong to more than one group. */
- if (gdev->cdev[i]->dev.driver_data) {
+ if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
rc = -EINVAL;
goto error;
}
- gdev->cdev[i]->dev.driver_data = gdev;
+ dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
}

gdev->creator_id = creator_id;
@@ -234,8 +234,8 @@ int ccwgroup_create(struct device *root,
error:
for (i = 0; i < argc; i++)
if (gdev->cdev[i]) {
- if (gdev->cdev[i]->dev.driver_data == gdev)
- gdev->cdev[i]->dev.driver_data = NULL;
+ if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
mutex_unlock(&gdev->reg_mutex);
@@ -463,8 +463,8 @@ __ccwgroup_get_gdev_by_cdev(struct ccw_d
{
struct ccwgroup_device *gdev;

- if (cdev->dev.driver_data) {
- gdev = (struct ccwgroup_device *)cdev->dev.driver_data;
+ gdev = dev_get_drvdata(&cdev->dev);
+ if (gdev) {
if (get_device(&gdev->dev)) {
mutex_lock(&gdev->reg_mutex);
if (device_is_registered(&gdev->dev))
Index: quilt-2.6/drivers/s390/cio/device.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device.c
+++ quilt-2.6/drivers/s390/cio/device.c
@@ -773,7 +773,7 @@ static void sch_attach_device(struct sub
{
css_update_ssd_info(sch);
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
cdev->private->schid = sch->schid;
cdev->ccwlock = sch->lock;
device_trigger_reprobe(sch);
@@ -795,7 +795,7 @@ static void sch_attach_disconnected_devi
put_device(&other_sch->dev);
return;
}
- other_sch->dev.driver_data = NULL;
+ sch_set_cdev(other_sch, NULL);
/* No need to keep a subchannel without ccw device around. */
css_sch_device_unregister(other_sch);
put_device(&other_sch->dev);
@@ -831,12 +831,12 @@ static void sch_create_and_recog_new_dev
return;
}
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
spin_unlock_irq(sch->lock);
/* Start recognition for the new ccw device. */
if (io_subchannel_recog(cdev, sch)) {
spin_lock_irq(sch->lock);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irq(sch->lock);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
@@ -940,7 +940,7 @@ io_subchannel_register(struct work_struc
cdev->private->dev_id.devno, ret);
put_device(&cdev->dev);
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
kfree (cdev->private);
kfree (cdev);
@@ -1022,7 +1022,7 @@ io_subchannel_recog(struct ccw_device *c
int rc;
struct ccw_device_private *priv;

- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
sch->driver = &io_subchannel_driver;
cdev->ccwlock = sch->lock;

@@ -1082,7 +1082,7 @@ static void ccw_device_move_to_sch(struc
}
if (former_parent) {
spin_lock_irq(former_parent->lock);
- former_parent->dev.driver_data = NULL;
+ sch_set_cdev(former_parent, NULL);
spin_unlock_irq(former_parent->lock);
css_sch_device_unregister(former_parent);
/* Reset intparm to zeroes. */
@@ -1100,7 +1100,7 @@ static void io_subchannel_irq(struct sub
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);

CIO_TRACE_EVENT(3, "IRQ");
CIO_TRACE_EVENT(3, sch->dev.bus_id);
@@ -1116,13 +1116,13 @@ io_subchannel_probe (struct subchannel *
unsigned long flags;
struct ccw_dev_id dev_id;

- if (sch->dev.driver_data) {
+ cdev = sch_get_cdev(sch);
+ if (cdev) {
/*
* This subchannel already has an associated ccw_device.
* Register it and exit. This happens for all early
* device, e.g. the console.
*/
- cdev = sch->dev.driver_data;
cdev->dev.groups = ccwdev_attr_groups;
device_initialize(&cdev->dev);
ccw_device_register(cdev);
@@ -1173,7 +1173,7 @@ io_subchannel_probe (struct subchannel *
rc = io_subchannel_recog(cdev, sch);
if (rc) {
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
@@ -1189,12 +1189,12 @@ io_subchannel_remove (struct subchannel
struct ccw_device *cdev;
unsigned long flags;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
/* Set ccw device to not operational and drop reference. */
spin_lock_irqsave(cdev->ccwlock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
ccw_device_unregister(cdev);
@@ -1207,7 +1207,7 @@ static int io_subchannel_notify(struct s
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return 0;
if (!cdev->drv)
@@ -1221,7 +1221,7 @@ static void io_subchannel_verify(struct
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (cdev)
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
}
@@ -1230,7 +1230,7 @@ static void io_subchannel_ioterm(struct
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
/* Internal I/O will be retried by the interrupt handler. */
@@ -1248,7 +1248,7 @@ io_subchannel_shutdown(struct subchannel
struct ccw_device *cdev;
int ret;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);

if (cio_is_console(sch->schid))
return;
Index: quilt-2.6/drivers/s390/cio/device_fsm.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device_fsm.c
+++ quilt-2.6/drivers/s390/cio/device_fsm.c
@@ -32,9 +32,9 @@ device_is_online(struct subchannel *sch)
{
struct ccw_device *cdev;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_ONLINE);
}

@@ -43,9 +43,9 @@ device_is_disconnected(struct subchannel
{
struct ccw_device *cdev;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_DISCONNECTED ||
cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID);
}
@@ -55,9 +55,9 @@ device_set_disconnected(struct subchanne
{
struct ccw_device *cdev;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
cdev->private->flags.fake_irb = 0;
cdev->private->state = DEV_STATE_DISCONNECTED;
@@ -67,7 +67,7 @@ void device_set_intretry(struct subchann
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
cdev->private->flags.intretry = 1;
@@ -77,7 +77,7 @@ int device_trigger_verify(struct subchan
{
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev || !cdev->online)
return -EINVAL;
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
@@ -175,9 +175,9 @@ device_kill_pending_timer(struct subchan
{
struct ccw_device *cdev;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
}

@@ -992,7 +992,7 @@ void device_kill_io(struct subchannel *s
int ret;
struct ccw_device *cdev;

- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
ret = ccw_device_cancel_halt_clear(cdev);
if (ret == -EBUSY) {
ccw_device_set_timeout(cdev, 3*HZ);
@@ -1062,9 +1062,9 @@ device_trigger_reprobe(struct subchannel
{
struct ccw_device *cdev;

- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
if (cdev->private->state != DEV_STATE_DISCONNECTED)
return;

Index: quilt-2.6/drivers/s390/cio/io_sch.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/io_sch.h
+++ quilt-2.6/drivers/s390/cio/io_sch.h
@@ -34,6 +34,8 @@ struct io_subchannel_private {
} __attribute__ ((aligned(8)));

#define to_io_private(n) ((struct io_subchannel_private *)n->private)
+#define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
+#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))

#define MAX_CIWS 8

--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.



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