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-rw-r--r--drivers/s390/block/dasd.c34
-rw-r--r--drivers/s390/block/dasd_diag.c1
-rw-r--r--drivers/s390/block/dasd_eckd.c44
-rw-r--r--drivers/s390/block/dasd_fba.c22
-rw-r--r--drivers/s390/block/dasd_int.h3
-rw-r--r--drivers/s390/block/dcssblk.c4
-rw-r--r--drivers/s390/char/con3270.c38
-rw-r--r--drivers/s390/char/tty3270.c57
-rw-r--r--drivers/s390/cio/cio.c6
-rw-r--r--drivers/s390/cio/device_ops.c24
-rw-r--r--drivers/s390/cio/qdio_main.c46
-rw-r--r--drivers/s390/cio/qdio_perf.c12
-rw-r--r--drivers/s390/cio/qdio_perf.h10
13 files changed, 135 insertions, 166 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 27a1be0cd4d4..442bb98a2821 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -851,8 +851,10 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
/* Check the cqr */
rc = dasd_check_cqr(cqr);
- if (rc)
+ if (rc) {
+ cqr->intrc = rc;
return rc;
+ }
device = (struct dasd_device *) cqr->startdev;
if (cqr->retries < 0) {
/* internal error 14 - start_IO run out of retries */
@@ -915,6 +917,7 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
BUG();
break;
}
+ cqr->intrc = rc;
return rc;
}
@@ -1454,8 +1457,12 @@ int dasd_sleep_on(struct dasd_ccw_req *cqr)
dasd_add_request_tail(cqr);
wait_event(generic_waitq, _wait_for_wakeup(cqr));
- /* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -1477,8 +1484,15 @@ int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr)
dasd_cancel_req(cqr);
/* wait (non-interruptible) for final status */
wait_event(generic_waitq, _wait_for_wakeup(cqr));
+ cqr->intrc = rc;
}
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -1523,8 +1537,12 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
wait_event(generic_waitq, _wait_for_wakeup(cqr));
- /* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
+ if (cqr->status == DASD_CQR_DONE)
+ rc = 0;
+ else if (cqr->intrc)
+ rc = cqr->intrc;
+ else
+ rc = -EIO;
return rc;
}
@@ -2427,12 +2445,12 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
int dasd_generic_read_dev_chars(struct dasd_device *device, char *magic,
- void **rdc_buffer, int rdc_buffer_size)
+ void *rdc_buffer, int rdc_buffer_size)
{
int ret;
struct dasd_ccw_req *cqr;
- cqr = dasd_generic_build_rdc(device, *rdc_buffer, rdc_buffer_size,
+ cqr = dasd_generic_build_rdc(device, rdc_buffer, rdc_buffer_size,
magic);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 2efaddfae560..644086ba2ede 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -202,6 +202,7 @@ dasd_start_diag(struct dasd_ccw_req * cqr)
rc = -EIO;
break;
}
+ cqr->intrc = rc;
return rc;
}
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index a41c94053e64..cf0cfdba1244 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1097,20 +1097,20 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
{
struct dasd_eckd_private *private;
struct dasd_block *block;
- void *rdc_data;
int is_known, rc;
private = (struct dasd_eckd_private *) device->private;
- if (private == NULL) {
- private = kzalloc(sizeof(struct dasd_eckd_private),
- GFP_KERNEL | GFP_DMA);
- if (private == NULL) {
+ if (!private) {
+ private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA);
+ if (!private) {
dev_warn(&device->cdev->dev,
"Allocating memory for private DASD data "
"failed\n");
return -ENOMEM;
}
device->private = (void *) private;
+ } else {
+ memset(private, 0, sizeof(*private));
}
/* Invalidate status of initial analysis. */
private->init_cqr_status = -1;
@@ -1161,9 +1161,8 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
goto out_err3;
/* Read Device Characteristics */
- rdc_data = (void *) &(private->rdc_data);
- memset(rdc_data, 0, sizeof(rdc_data));
- rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64);
+ rc = dasd_generic_read_dev_chars(device, "ECKD", &private->rdc_data,
+ 64);
if (rc) {
DBF_EVENT(DBF_WARNING,
"Read device characteristics failed, rc=%d for "
@@ -1183,7 +1182,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
private->rdc_data.dev_model,
private->rdc_data.cu_type,
private->rdc_data.cu_model.model,
- private->real_cyl,
+ private->real_cyl,
private->rdc_data.trk_per_cyl,
private->rdc_data.sec_per_trk);
return 0;
@@ -2336,9 +2335,10 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
{
int tpm, cmdrtd, cmdwtd;
int use_prefix;
-
- struct dasd_eckd_private *private;
+#if defined(CONFIG_64BIT)
int fcx_in_css, fcx_in_gneq, fcx_in_features;
+#endif
+ struct dasd_eckd_private *private;
struct dasd_device *basedev;
sector_t first_rec, last_rec;
sector_t first_trk, last_trk;
@@ -2361,11 +2361,15 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
last_offs = sector_div(last_trk, blk_per_trk);
cdlspecial = (private->uses_cdl && first_rec < 2*blk_per_trk);
- /* is transport mode supported ? */
+ /* is transport mode supported? */
+#if defined(CONFIG_64BIT)
fcx_in_css = css_general_characteristics.fcx;
fcx_in_gneq = private->gneq->reserved2[7] & 0x04;
fcx_in_features = private->features.feature[40] & 0x80;
tpm = fcx_in_css && fcx_in_gneq && fcx_in_features;
+#else
+ tpm = 0;
+#endif
/* is read track data and write track data in command mode supported? */
cmdrtd = private->features.feature[9] & 0x20;
@@ -3013,8 +3017,9 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
" I/O status report for device %s:\n",
dev_name(&device->cdev->dev));
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " in req: %p CS: 0x%02X DS: 0x%02X\n", req,
- scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw));
+ " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d\n",
+ req, scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw),
+ scsw_cc(&irb->scsw), req->intrc);
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" device %s: Failing CCW: %p\n",
dev_name(&device->cdev->dev),
@@ -3115,9 +3120,10 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
" I/O status report for device %s:\n",
dev_name(&device->cdev->dev));
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " in req: %p CS: 0x%02X DS: 0x%02X "
+ " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d "
"fcxs: 0x%02X schxs: 0x%02X\n", req,
scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw),
+ scsw_cc(&irb->scsw), req->intrc,
irb->scsw.tm.fcxs, irb->scsw.tm.schxs);
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" device %s: Failing TCW: %p\n",
@@ -3273,8 +3279,14 @@ static struct dasd_discipline dasd_eckd_discipline = {
static int __init
dasd_eckd_init(void)
{
+ int ret;
+
ASCEBC(dasd_eckd_discipline.ebcname, 4);
- return ccw_driver_register(&dasd_eckd_driver);
+ ret = ccw_driver_register(&dasd_eckd_driver);
+ if (!ret)
+ wait_for_device_probe();
+
+ return ret;
}
static void __exit
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 8912358daa2f..597c6ffdb9f2 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -122,20 +122,20 @@ dasd_fba_check_characteristics(struct dasd_device *device)
struct dasd_block *block;
struct dasd_fba_private *private;
struct ccw_device *cdev = device->cdev;
- void *rdc_data;
int rc;
private = (struct dasd_fba_private *) device->private;
- if (private == NULL) {
- private = kzalloc(sizeof(struct dasd_fba_private),
- GFP_KERNEL | GFP_DMA);
- if (private == NULL) {
+ if (!private) {
+ private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA);
+ if (!private) {
dev_warn(&device->cdev->dev,
"Allocating memory for private DASD "
"data failed\n");
return -ENOMEM;
}
device->private = (void *) private;
+ } else {
+ memset(private, 0, sizeof(*private));
}
block = dasd_alloc_block();
if (IS_ERR(block)) {
@@ -150,8 +150,8 @@ dasd_fba_check_characteristics(struct dasd_device *device)
block->base = device;
/* Read Device Characteristics */
- rdc_data = (void *) &(private->rdc_data);
- rc = dasd_generic_read_dev_chars(device, "FBA ", &rdc_data, 32);
+ rc = dasd_generic_read_dev_chars(device, "FBA ", &private->rdc_data,
+ 32);
if (rc) {
DBF_EVENT(DBF_WARNING, "Read device characteristics returned "
"error %d for device: %s",
@@ -604,8 +604,14 @@ static struct dasd_discipline dasd_fba_discipline = {
static int __init
dasd_fba_init(void)
{
+ int ret;
+
ASCEBC(dasd_fba_discipline.ebcname, 4);
- return ccw_driver_register(&dasd_fba_driver);
+ ret = ccw_driver_register(&dasd_fba_driver);
+ if (!ret)
+ wait_for_device_probe();
+
+ return ret;
}
static void __exit
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index c1e487f774c6..f97ceb795078 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -173,6 +173,7 @@ struct dasd_ccw_req {
void *data; /* pointer to data area */
/* these are important for recovering erroneous requests */
+ int intrc; /* internal error, e.g. from start_IO */
struct irb irb; /* device status in case of an error */
struct dasd_ccw_req *refers; /* ERP-chain queueing. */
void *function; /* originating ERP action */
@@ -578,7 +579,7 @@ int dasd_generic_set_offline (struct ccw_device *cdev);
int dasd_generic_notify(struct ccw_device *, int);
void dasd_generic_handle_state_change(struct dasd_device *);
-int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int);
+int dasd_generic_read_dev_chars(struct dasd_device *, char *, void *, int);
char *dasd_get_sense(struct irb *);
/* externals in dasd_devmap.c */
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index a4c7ffcd9987..b21caf177e37 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -127,7 +127,7 @@ dcssblk_assign_free_minor(struct dcssblk_dev_info *dev_info)
found = 0;
// test if minor available
list_for_each_entry(entry, &dcssblk_devices, lh)
- if (minor == MINOR(disk_devt(entry->gd)))
+ if (minor == entry->gd->first_minor)
found++;
if (!found) break; // got unused minor
}
@@ -625,7 +625,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
if (rc)
goto release_gd;
sprintf(dev_info->gd->disk_name, "dcssblk%d",
- MINOR(disk_devt(dev_info->gd)));
+ dev_info->gd->first_minor);
list_add_tail(&dev_info->lh, &dcssblk_devices);
if (!try_module_get(THIS_MODULE)) {
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index d028d2ee83dd..ed5396dae58e 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -64,7 +64,7 @@ static struct con3270 *condev;
#define CON_UPDATE_ERASE 1 /* Use EWRITEA instead of WRITE. */
#define CON_UPDATE_LIST 2 /* Update lines in tty3270->update. */
#define CON_UPDATE_STATUS 4 /* Update status line. */
-#define CON_UPDATE_ALL 7
+#define CON_UPDATE_ALL 8 /* Recreate screen. */
static void con3270_update(struct con3270 *);
@@ -73,18 +73,10 @@ static void con3270_update(struct con3270 *);
*/
static void con3270_set_timer(struct con3270 *cp, int expires)
{
- if (expires == 0) {
- if (timer_pending(&cp->timer))
- del_timer(&cp->timer);
- return;
- }
- if (timer_pending(&cp->timer) &&
- mod_timer(&cp->timer, jiffies + expires))
- return;
- cp->timer.function = (void (*)(unsigned long)) con3270_update;
- cp->timer.data = (unsigned long) cp;
- cp->timer.expires = jiffies + expires;
- add_timer(&cp->timer);
+ if (expires == 0)
+ del_timer(&cp->timer);
+ else
+ mod_timer(&cp->timer, jiffies + expires);
}
/*
@@ -225,6 +217,12 @@ con3270_update(struct con3270 *cp)
spin_lock_irqsave(&cp->view.lock, flags);
updated = 0;
+ if (cp->update_flags & CON_UPDATE_ALL) {
+ con3270_rebuild_update(cp);
+ con3270_update_status(cp);
+ cp->update_flags = CON_UPDATE_ERASE | CON_UPDATE_LIST |
+ CON_UPDATE_STATUS;
+ }
if (cp->update_flags & CON_UPDATE_ERASE) {
/* Use erase write alternate to initialize display. */
raw3270_request_set_cmd(wrq, TC_EWRITEA);
@@ -302,7 +300,6 @@ con3270_read_tasklet(struct raw3270_request *rrq)
deactivate = 1;
break;
case 0x6d: /* clear: start from scratch. */
- con3270_rebuild_update(cp);
cp->update_flags = CON_UPDATE_ALL;
con3270_set_timer(cp, 1);
break;
@@ -382,30 +379,21 @@ con3270_issue_read(struct con3270 *cp)
static int
con3270_activate(struct raw3270_view *view)
{
- unsigned long flags;
struct con3270 *cp;
cp = (struct con3270 *) view;
- spin_lock_irqsave(&cp->view.lock, flags);
- cp->nr_up = 0;
- con3270_rebuild_update(cp);
- con3270_update_status(cp);
cp->update_flags = CON_UPDATE_ALL;
con3270_set_timer(cp, 1);
- spin_unlock_irqrestore(&cp->view.lock, flags);
return 0;
}
static void
con3270_deactivate(struct raw3270_view *view)
{
- unsigned long flags;
struct con3270 *cp;
cp = (struct con3270 *) view;
- spin_lock_irqsave(&cp->view.lock, flags);
del_timer(&cp->timer);
- spin_unlock_irqrestore(&cp->view.lock, flags);
}
static int
@@ -504,6 +492,7 @@ con3270_write(struct console *co, const char *str, unsigned int count)
con3270_cline_end(cp);
}
/* Setup timer to output current console buffer after 1/10 second */
+ cp->nr_up = 0;
if (cp->view.dev && !timer_pending(&cp->timer))
con3270_set_timer(cp, HZ/10);
spin_unlock_irqrestore(&cp->view.lock,flags);
@@ -624,7 +613,8 @@ con3270_init(void)
INIT_LIST_HEAD(&condev->lines);
INIT_LIST_HEAD(&condev->update);
- init_timer(&condev->timer);
+ setup_timer(&condev->timer, (void (*)(unsigned long)) con3270_update,
+ (unsigned long) condev);
tasklet_init(&condev->readlet,
(void (*)(unsigned long)) con3270_read_tasklet,
(unsigned long) condev->read);
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index a7fe6302c982..38385677c653 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -112,7 +112,7 @@ struct tty3270 {
#define TTY_UPDATE_LIST 2 /* Update lines in tty3270->update. */
#define TTY_UPDATE_INPUT 4 /* Update input line. */
#define TTY_UPDATE_STATUS 8 /* Update status line. */
-#define TTY_UPDATE_ALL 15
+#define TTY_UPDATE_ALL 16 /* Recreate screen. */
static void tty3270_update(struct tty3270 *);
@@ -121,19 +121,10 @@ static void tty3270_update(struct tty3270 *);
*/
static void tty3270_set_timer(struct tty3270 *tp, int expires)
{
- if (expires == 0) {
- if (timer_pending(&tp->timer) && del_timer(&tp->timer))
- raw3270_put_view(&tp->view);
- return;
- }
- if (timer_pending(&tp->timer) &&
- mod_timer(&tp->timer, jiffies + expires))
- return;
- raw3270_get_view(&tp->view);
- tp->timer.function = (void (*)(unsigned long)) tty3270_update;
- tp->timer.data = (unsigned long) tp;
- tp->timer.expires = jiffies + expires;
- add_timer(&tp->timer);
+ if (expires == 0)
+ del_timer(&tp->timer);
+ else
+ mod_timer(&tp->timer, jiffies + expires);
}
/*
@@ -337,7 +328,6 @@ tty3270_write_callback(struct raw3270_request *rq, void *data)
tp = (struct tty3270 *) rq->view;
if (rq->rc != 0) {
/* Write wasn't successfull. Refresh all. */
- tty3270_rebuild_update(tp);
tp->update_flags = TTY_UPDATE_ALL;
tty3270_set_timer(tp, 1);
}
@@ -366,6 +356,12 @@ tty3270_update(struct tty3270 *tp)
spin_lock(&tp->view.lock);
updated = 0;
+ if (tp->update_flags & TTY_UPDATE_ALL) {
+ tty3270_rebuild_update(tp);
+ tty3270_update_status(tp);
+ tp->update_flags = TTY_UPDATE_ERASE | TTY_UPDATE_LIST |
+ TTY_UPDATE_INPUT | TTY_UPDATE_STATUS;
+ }
if (tp->update_flags & TTY_UPDATE_ERASE) {
/* Use erase write alternate to erase display. */
raw3270_request_set_cmd(wrq, TC_EWRITEA);
@@ -425,7 +421,6 @@ tty3270_update(struct tty3270 *tp)
xchg(&tp->write, wrq);
}
spin_unlock(&tp->view.lock);
- raw3270_put_view(&tp->view);
}
/*
@@ -570,7 +565,6 @@ tty3270_read_tasklet(struct raw3270_request *rrq)
tty3270_set_timer(tp, 1);
} else if (tp->input->string[0] == 0x6d) {
/* Display has been cleared. Redraw. */
- tty3270_rebuild_update(tp);
tp->update_flags = TTY_UPDATE_ALL;
tty3270_set_timer(tp, 1);
}
@@ -641,22 +635,20 @@ static int
tty3270_activate(struct raw3270_view *view)
{
struct tty3270 *tp;
- unsigned long flags;
tp = (struct tty3270 *) view;
- spin_lock_irqsave(&tp->view.lock, flags);
- tp->nr_up = 0;
- tty3270_rebuild_update(tp);
- tty3270_update_status(tp);
tp->update_flags = TTY_UPDATE_ALL;
tty3270_set_timer(tp, 1);
- spin_unlock_irqrestore(&tp->view.lock, flags);
return 0;
}
static void
tty3270_deactivate(struct raw3270_view *view)
{
+ struct tty3270 *tp;
+
+ tp = (struct tty3270 *) view;
+ del_timer(&tp->timer);
}
static int
@@ -743,6 +735,7 @@ tty3270_free_view(struct tty3270 *tp)
{
int pages;
+ del_timer_sync(&tp->timer);
kbd_free(tp->kbd);
raw3270_request_free(tp->kreset);
raw3270_request_free(tp->read);
@@ -889,7 +882,8 @@ tty3270_open(struct tty_struct *tty, struct file * filp)
INIT_LIST_HEAD(&tp->update);
INIT_LIST_HEAD(&tp->rcl_lines);
tp->rcl_max = 20;
- init_timer(&tp->timer);
+ setup_timer(&tp->timer, (void (*)(unsigned long)) tty3270_update,
+ (unsigned long) tp);
tasklet_init(&tp->readlet,
(void (*)(unsigned long)) tty3270_read_tasklet,
(unsigned long) tp->read);
@@ -1754,14 +1748,6 @@ static const struct tty_operations tty3270_ops = {
.set_termios = tty3270_set_termios
};
-static void tty3270_notifier(int index, int active)
-{
- if (active)
- tty_register_device(tty3270_driver, index, NULL);
- else
- tty_unregister_device(tty3270_driver, index);
-}
-
/*
* 3270 tty registration code called from tty_init().
* Most kernel services (incl. kmalloc) are available at this poimt.
@@ -1796,12 +1782,6 @@ static int __init tty3270_init(void)
return ret;
}
tty3270_driver = driver;
- ret = raw3270_register_notifier(tty3270_notifier);
- if (ret) {
- put_tty_driver(driver);
- return ret;
-
- }
return 0;
}
@@ -1810,7 +1790,6 @@ tty3270_exit(void)
{
struct tty_driver *driver;
- raw3270_unregister_notifier(tty3270_notifier);
driver = tty3270_driver;
tty3270_driver = NULL;
tty_unregister_driver(driver);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 2aebb9823044..5ec7789bd9d8 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -12,6 +12,7 @@
#define KMSG_COMPONENT "cio"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#include <linux/ftrace.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@@ -28,7 +29,7 @@
#include <asm/chpid.h>
#include <asm/airq.h>
#include <asm/isc.h>
-#include <asm/cpu.h>
+#include <asm/cputime.h>
#include <asm/fcx.h>
#include <asm/nmi.h>
#include <asm/crw.h>
@@ -626,8 +627,7 @@ out:
* handlers).
*
*/
-void
-do_IRQ (struct pt_regs *regs)
+void __irq_entry do_IRQ(struct pt_regs *regs)
{
struct tpi_info *tpi_info;
struct subchannel *sch;
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 151754d54745..bf0a24af39a0 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -114,7 +114,7 @@ int ccw_device_clear(struct ccw_device *cdev, unsigned long intparm)
struct subchannel *sch;
int ret;
- if (!cdev)
+ if (!cdev || !cdev->dev.parent)
return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
@@ -122,8 +122,6 @@ int ccw_device_clear(struct ccw_device *cdev, unsigned long intparm)
cdev->private->state != DEV_STATE_W4SENSE)
return -EINVAL;
sch = to_subchannel(cdev->dev.parent);
- if (!sch)
- return -ENODEV;
ret = cio_clear(sch);
if (ret == 0)
cdev->private->intparm = intparm;
@@ -161,11 +159,9 @@ int ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa,
struct subchannel *sch;
int ret;
- if (!cdev)
+ if (!cdev || !cdev->dev.parent)
return -ENODEV;
sch = to_subchannel(cdev->dev.parent);
- if (!sch)
- return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
if (cdev->private->state == DEV_STATE_VERIFY ||
@@ -339,7 +335,7 @@ int ccw_device_halt(struct ccw_device *cdev, unsigned long intparm)
struct subchannel *sch;
int ret;
- if (!cdev)
+ if (!cdev || !cdev->dev.parent)
return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
@@ -347,8 +343,6 @@ int ccw_device_halt(struct ccw_device *cdev, unsigned long intparm)
cdev->private->state != DEV_STATE_W4SENSE)
return -EINVAL;
sch = to_subchannel(cdev->dev.parent);
- if (!sch)
- return -ENODEV;
ret = cio_halt(sch);
if (ret == 0)
cdev->private->intparm = intparm;
@@ -372,11 +366,9 @@ int ccw_device_resume(struct ccw_device *cdev)
{
struct subchannel *sch;
- if (!cdev)
+ if (!cdev || !cdev->dev.parent)
return -ENODEV;
sch = to_subchannel(cdev->dev.parent);
- if (!sch)
- return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
if (cdev->private->state != DEV_STATE_ONLINE ||
@@ -471,11 +463,11 @@ __u8 ccw_device_get_path_mask(struct ccw_device *cdev)
{
struct subchannel *sch;
- sch = to_subchannel(cdev->dev.parent);
- if (!sch)
+ if (!cdev->dev.parent)
return 0;
- else
- return sch->lpm;
+
+ sch = to_subchannel(cdev->dev.parent);
+ return sch->lpm;
}
/*
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index accd957454e7..d79cf5bf0e62 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -881,42 +881,26 @@ no_handler:
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
}
-static int qdio_establish_check_errors(struct ccw_device *cdev, int cstat,
- int dstat)
+static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat,
+ int dstat)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;
- if (cstat || (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END))) {
- DBF_ERROR("EQ:ck con");
- goto error;
- }
+ DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq");
- if (!(dstat & DEV_STAT_DEV_END)) {
- DBF_ERROR("EQ:no dev");
+ if (cstat)
goto error;
- }
-
- if (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) {
- DBF_ERROR("EQ: bad io");
+ if (dstat & ~(DEV_STAT_DEV_END | DEV_STAT_CHN_END))
goto error;
- }
- return 0;
+ if (!(dstat & DEV_STAT_DEV_END))
+ goto error;
+ qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
+ return;
+
error:
DBF_ERROR("%4x EQ:error", irq_ptr->schid.sch_no);
DBF_ERROR("ds: %2x cs:%2x", dstat, cstat);
-
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
- return 1;
-}
-
-static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat,
- int dstat)
-{
- struct qdio_irq *irq_ptr = cdev->private->qdio_data;
-
- DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq");
- if (!qdio_establish_check_errors(cdev, cstat, dstat))
- qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
}
/* qdio interrupt handler */
@@ -946,7 +930,6 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
}
}
qdio_irq_check_sense(irq_ptr, irb);
-
cstat = irb->scsw.cmd.cstat;
dstat = irb->scsw.cmd.dstat;
@@ -954,22 +937,19 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
case QDIO_IRQ_STATE_INACTIVE:
qdio_establish_handle_irq(cdev, cstat, dstat);
break;
-
case QDIO_IRQ_STATE_CLEANUP:
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
break;
-
case QDIO_IRQ_STATE_ESTABLISHED:
case QDIO_IRQ_STATE_ACTIVE:
if (cstat & SCHN_STAT_PCI) {
qdio_int_handler_pci(irq_ptr);
return;
}
- if ((cstat & ~SCHN_STAT_PCI) || dstat) {
+ if (cstat || dstat)
qdio_handle_activate_check(cdev, intparm, cstat,
dstat);
- break;
- }
+ break;
default:
WARN_ON(1);
}
@@ -1514,7 +1494,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
if ((bufnr > QDIO_MAX_BUFFERS_PER_Q) ||
(count > QDIO_MAX_BUFFERS_PER_Q) ||
- (q_nr > QDIO_MAX_QUEUES_PER_IRQ))
+ (q_nr >= QDIO_MAX_QUEUES_PER_IRQ))
return -EINVAL;
if (!count)
diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
index 136d0f0b1e93..eff943923c6f 100644
--- a/drivers/s390/cio/qdio_perf.c
+++ b/drivers/s390/cio/qdio_perf.c
@@ -25,18 +25,6 @@ struct qdio_perf_stats perf_stats;
static struct proc_dir_entry *qdio_perf_pde;
#endif
-inline void qdio_perf_stat_inc(atomic_long_t *count)
-{
- if (qdio_performance_stats)
- atomic_long_inc(count);
-}
-
-inline void qdio_perf_stat_dec(atomic_long_t *count)
-{
- if (qdio_performance_stats)
- atomic_long_dec(count);
-}
-
/*
* procfs functions
*/
diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h
index 7821ac4fa517..ff4504ce1e3c 100644
--- a/drivers/s390/cio/qdio_perf.h
+++ b/drivers/s390/cio/qdio_perf.h
@@ -9,7 +9,6 @@
#define QDIO_PERF_H
#include <linux/types.h>
-#include <linux/device.h>
#include <asm/atomic.h>
struct qdio_perf_stats {
@@ -50,10 +49,13 @@ struct qdio_perf_stats {
extern struct qdio_perf_stats perf_stats;
extern int qdio_performance_stats;
+static inline void qdio_perf_stat_inc(atomic_long_t *count)
+{
+ if (qdio_performance_stats)
+ atomic_long_inc(count);
+}
+
int qdio_setup_perf_stats(void);
void qdio_remove_perf_stats(void);
-extern void qdio_perf_stat_inc(atomic_long_t *count);
-extern void qdio_perf_stat_dec(atomic_long_t *count);
-
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 15:03:37 +0000