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author | 2007-07-27 12:29:21 +0200 | |
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committer | 2007-07-27 12:29:20 +0200 | |
commit | 4434a38c37dd30e5cd01456a136367a43d8da2dd (patch) | |
tree | 7597941ae953297e8f8531e995d9b0c2e9a114a3 /drivers/s390 | |
parent | [S390] cio: Make CIO_* macros safe if dbfs are not available. (diff) | |
download | linux-4434a38c37dd30e5cd01456a136367a43d8da2dd.tar.gz linux-4434a38c37dd30e5cd01456a136367a43d8da2dd.tar.bz2 linux-4434a38c37dd30e5cd01456a136367a43d8da2dd.zip |
[S390] cio: Reorganize initialization.
- Localize more of the init calls in init_channel_subsystem().
- Print a warning if init_channel_subsystem() failed.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/cio/chsc.c | 10 | ||||
-rw-r--r-- | drivers/s390/cio/chsc.h | 2 | ||||
-rw-r--r-- | drivers/s390/cio/css.c | 19 |
3 files changed, 24 insertions, 7 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index b38dc2478541..597c0c76a2ad 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -990,8 +990,7 @@ out: return ret; } -static int __init -chsc_alloc_sei_area(void) +int __init chsc_alloc_sei_area(void) { sei_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); if (!sei_page) @@ -1000,6 +999,11 @@ chsc_alloc_sei_area(void) return (sei_page ? 0 : -ENOMEM); } +void __init chsc_free_sei_area(void) +{ + kfree(sei_page); +} + int __init chsc_enable_facility(int operation_code) { @@ -1051,8 +1055,6 @@ chsc_enable_facility(int operation_code) return ret; } -subsys_initcall(chsc_alloc_sei_area); - struct css_general_char css_general_characteristics; struct css_chsc_char css_chsc_characteristics; diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index 2ad81d11cf7b..d1f5db1e69b9 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -79,6 +79,8 @@ 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); extern int chsc_enable_facility(int); struct channel_subsystem; diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index ac5ceb933896..1c27a5a06b49 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -377,8 +377,6 @@ static int __init slow_subchannel_init(void) return 0; } -subsys_initcall(slow_subchannel_init); - static void css_slow_path_func(struct work_struct *unused) { struct subchannel_id schid; @@ -641,9 +639,20 @@ init_channel_subsystem (void) { int ret, i; - if (chsc_determine_css_characteristics() == 0) + 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) + goto out; + + ret = slow_subchannel_init(); + if (ret) + goto out; + if ((ret = bus_register(&css_bus_type))) goto out; @@ -709,6 +718,10 @@ out_unregister: out_bus: bus_unregister(&css_bus_type); out: + chsc_free_sei_area(); + kfree(slow_subchannel_set); + printk(KERN_WARNING"cio: failed to initialize css driver (%d)!\n", + ret); return ret; } |