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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-07-14 09:58:57 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-07-14 10:02:10 +0200
commit75784c00876c88ca6e955c39cbb5d47cf408fd3c (patch)
tree7f1122b85945d17da87f0dc353d476cd9eec1cf2 /drivers/s390/cio
parentd2fec595511b5718bdb65645b3d5d99800d97943 (diff)
[S390] cio: Get rid of css_characteristics_avail.
Checking for the validity of the css_*_characteristics is superfluous since they stay 0 for non-successful scsc. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/chp.c3
-rw-r--r--drivers/s390/cio/chsc.h1
-rw-r--r--drivers/s390/cio/cmf.c3
-rw-r--r--drivers/s390/cio/css.c12
-rw-r--r--drivers/s390/cio/qdio.c3
5 files changed, 5 insertions, 17 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 0b3c3109f228..62df43b2124c 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -415,8 +415,7 @@ int chp_new(struct chp_id chpid)
goto out_free;
}
/* Get channel-measurement characteristics. */
- if (css_characteristics_avail && css_chsc_characteristics.scmc
- && css_chsc_characteristics.secm) {
+ if (css_chsc_characteristics.scmc && css_chsc_characteristics.secm) {
ret = chsc_get_channel_measurement_chars(chp);
if (ret)
goto out_free;
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index d4498d4005d3..2a38b5090228 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -78,7 +78,6 @@ struct chsc_ssd_info {
extern int chsc_get_ssd_info(struct subchannel_id schid,
struct chsc_ssd_info *ssd);
extern int chsc_determine_css_characteristics(void);
-extern int css_characteristics_avail;
extern int chsc_alloc_sei_area(void);
extern void chsc_free_sei_area(void);
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 6c77c2326bd4..77523131a05e 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -1344,8 +1344,7 @@ static int __init init_cmf(void)
* to basic mode.
*/
if (format == CMF_AUTODETECT) {
- if (!css_characteristics_avail ||
- !css_general_characteristics.ext_mb) {
+ if (!css_general_characteristics.ext_mb) {
format = CMF_BASIC;
} else {
format = CMF_EXTENDED;
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 062716cf0f0c..ebed2212778d 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -30,8 +30,6 @@ static int max_ssid = 0;
struct channel_subsystem *channel_subsystems[__MAX_CSSID + 1];
-int css_characteristics_avail = 0;
-
int
for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data)
{
@@ -611,7 +609,7 @@ __init_channel_subsystem(struct subchannel_id schid, void *data)
static void __init
css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
{
- if (css_characteristics_avail && css_general_characteristics.mcss) {
+ if (css_general_characteristics.mcss) {
css->global_pgid.pgid_high.ext_cssid.version = 0x80;
css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid;
} else {
@@ -748,8 +746,6 @@ init_channel_subsystem (void)
ret = chsc_determine_css_characteristics();
if (ret == -ENOMEM)
goto out; /* No need to continue. */
- if (ret == 0)
- css_characteristics_avail = 1;
ret = chsc_alloc_sei_area();
if (ret)
@@ -793,8 +789,7 @@ init_channel_subsystem (void)
ret = device_register(&css->device);
if (ret)
goto out_free_all;
- if (css_characteristics_avail &&
- css_chsc_characteristics.secm) {
+ if (css_chsc_characteristics.secm) {
ret = device_create_file(&css->device,
&dev_attr_cm_enable);
if (ret)
@@ -832,7 +827,7 @@ out_unregister:
i--;
css = channel_subsystems[i];
device_unregister(&css->pseudo_subchannel->dev);
- if (css_characteristics_avail && css_chsc_characteristics.secm)
+ if (css_chsc_characteristics.secm)
device_remove_file(&css->device,
&dev_attr_cm_enable);
device_unregister(&css->device);
@@ -956,4 +951,3 @@ subsys_initcall(init_channel_subsystem);
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(css_bus_type);
-EXPORT_SYMBOL_GPL(css_characteristics_avail);
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 72508d8f3c4a..f9be265e7e8f 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -2354,9 +2354,6 @@ tiqdio_check_chsc_availability(void)
{
char dbf_text[15];
- if (!css_characteristics_avail)
- return -EIO;
-
/* Check for bit 41. */
if (!css_general_characteristics.aif) {
QDIO_PRINT_WARN("Adapter interruption facility not " \