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authorVineeth Vijayan <vneethv@linux.ibm.com>2020-03-30 14:36:57 +0200
committerHeiko Carstens <hca@linux.ibm.com>2020-12-02 18:19:24 +0100
commit1cf69b7b51d79eff839c8945cd909e13600f81c7 (patch)
treeb138b7b9e86ff549dcb70a34cad2dd9a857c4c30 /drivers/s390/char/raw3270.c
parents390/dasd: remove unused pm related functions (diff)
downloadlinux-1cf69b7b51d79eff839c8945cd909e13600f81c7.tar.xz
linux-1cf69b7b51d79eff839c8945cd909e13600f81c7.zip
s390: remove pm support from console drivers
The power-management functions are unused since the 'commit 394216275c7d ("s390: remove broken hibernate / power management support")'. Remove the unsued pm functions from the console drivers. Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'drivers/s390/char/raw3270.c')
-rw-r--r--drivers/s390/char/raw3270.c78
1 files changed, 6 insertions, 72 deletions
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 63a41b168761..646ec796bb83 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -67,7 +67,6 @@ struct raw3270 {
#define RAW3270_FLAGS_14BITADDR 0 /* 14-bit buffer addresses */
#define RAW3270_FLAGS_BUSY 1 /* Device busy, leave it alone */
#define RAW3270_FLAGS_CONSOLE 2 /* Device is the console. */
-#define RAW3270_FLAGS_FROZEN 3 /* set if 3270 is frozen for suspend */
/* Semaphore to protect global data of raw3270 (devices, views, etc). */
static DEFINE_MUTEX(raw3270_mutex);
@@ -260,8 +259,7 @@ raw3270_view_active(struct raw3270_view *view)
{
struct raw3270 *rp = view->dev;
- return rp && rp->view == view &&
- !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags);
+ return rp && rp->view == view;
}
int
@@ -273,8 +271,7 @@ raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
spin_lock_irqsave(get_ccwdev_lock(view->dev->cdev), flags);
rp = view->dev;
- if (!rp || rp->view != view ||
- test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
+ if (!rp || rp->view != view)
rc = -EACCES;
else if (!raw3270_state_ready(rp))
rc = -EBUSY;
@@ -291,8 +288,7 @@ raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq)
int rc;
rp = view->dev;
- if (!rp || rp->view != view ||
- test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
+ if (!rp || rp->view != view)
rc = -EACCES;
else if (!raw3270_state_ready(rp))
rc = -EBUSY;
@@ -629,8 +625,7 @@ raw3270_reset(struct raw3270_view *view)
int rc;
rp = view->dev;
- if (!rp || rp->view != view ||
- test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
+ if (!rp || rp->view != view)
rc = -EACCES;
else if (!raw3270_state_ready(rp))
rc = -EBUSY;
@@ -854,8 +849,6 @@ raw3270_activate_view(struct raw3270_view *view)
rc = 0;
else if (!raw3270_state_ready(rp))
rc = -EBUSY;
- else if (test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
- rc = -EACCES;
else {
oldview = NULL;
if (rp->view && rp->view->fn->deactivate) {
@@ -903,8 +896,7 @@ raw3270_deactivate_view(struct raw3270_view *view)
list_del_init(&view->list);
list_add_tail(&view->list, &rp->view_list);
/* Try to activate another view. */
- if (raw3270_state_ready(rp) &&
- !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) {
+ if (raw3270_state_ready(rp)) {
list_for_each_entry(view, &rp->view_list, list) {
rp->view = view;
if (view->fn->activate(view) == 0)
@@ -999,8 +991,7 @@ raw3270_del_view(struct raw3270_view *view)
rp->view = NULL;
}
list_del_init(&view->list);
- if (!rp->view && raw3270_state_ready(rp) &&
- !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) {
+ if (!rp->view && raw3270_state_ready(rp)) {
/* Try to activate another view. */
list_for_each_entry(nv, &rp->view_list, list) {
if (nv->fn->activate(nv) == 0) {
@@ -1215,60 +1206,6 @@ raw3270_set_offline (struct ccw_device *cdev)
return 0;
}
-static int raw3270_pm_stop(struct ccw_device *cdev)
-{
- struct raw3270 *rp;
- struct raw3270_view *view;
- unsigned long flags;
-
- rp = dev_get_drvdata(&cdev->dev);
- if (!rp)
- return 0;
- spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
- if (rp->view && rp->view->fn->deactivate)
- rp->view->fn->deactivate(rp->view);
- if (!test_bit(RAW3270_FLAGS_CONSOLE, &rp->flags)) {
- /*
- * Release tty and fullscreen for all non-console
- * devices.
- */
- list_for_each_entry(view, &rp->view_list, list) {
- if (view->fn->release)
- view->fn->release(view);
- }
- }
- set_bit(RAW3270_FLAGS_FROZEN, &rp->flags);
- spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags);
- return 0;
-}
-
-static int raw3270_pm_start(struct ccw_device *cdev)
-{
- struct raw3270 *rp;
- unsigned long flags;
-
- rp = dev_get_drvdata(&cdev->dev);
- if (!rp)
- return 0;
- spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
- clear_bit(RAW3270_FLAGS_FROZEN, &rp->flags);
- if (rp->view && rp->view->fn->activate)
- rp->view->fn->activate(rp->view);
- spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags);
- return 0;
-}
-
-void raw3270_pm_unfreeze(struct raw3270_view *view)
-{
-#ifdef CONFIG_TN3270_CONSOLE
- struct raw3270 *rp;
-
- rp = view->dev;
- if (rp && test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
- ccw_device_force_console(rp->cdev);
-#endif
-}
-
static struct ccw_device_id raw3270_id[] = {
{ CCW_DEVICE(0x3270, 0) },
{ CCW_DEVICE(0x3271, 0) },
@@ -1294,9 +1231,6 @@ static struct ccw_driver raw3270_ccw_driver = {
.remove = &raw3270_remove,
.set_online = &raw3270_set_online,
.set_offline = &raw3270_set_offline,
- .freeze = &raw3270_pm_stop,
- .thaw = &raw3270_pm_start,
- .restore = &raw3270_pm_start,
.int_class = IRQIO_C70,
};