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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2009-10-29 15:04:10 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2009-10-29 15:05:12 +0100 |
| commit | 4a0fb4c44573759f878fc65f6ddbd46080748f8b (patch) | |
| tree | 4fbd49410c12f2643dd60586faf9a7ce0cb74be9 | |
| parent | 4f8048ee734dab7c463574797b820c0c68c80791 (diff) | |
| download | linux-4a0fb4c44573759f878fc65f6ddbd46080748f8b.tar.gz linux-4a0fb4c44573759f878fc65f6ddbd46080748f8b.tar.bz2 linux-4a0fb4c44573759f878fc65f6ddbd46080748f8b.zip | |
[S390] call home: fix error handling in init function
Fix missing unregister_sysctl_table in case the SCLP doesn't provide
the requested feature. Also simplify the whole error handling while
at it.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | drivers/s390/char/sclp_async.c | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c index bf4a9f455d8e..3c20aa131180 100644 --- a/drivers/s390/char/sclp_async.c +++ b/drivers/s390/char/sclp_async.c @@ -170,39 +170,31 @@ static int __init sclp_async_init(void) rc = sclp_register(&sclp_async_register); if (rc) return rc; - callhome_sysctl_header = register_sysctl_table(kern_dir_table); - if (!callhome_sysctl_header) { - rc = -ENOMEM; - goto out_sclp; - } - if (!(sclp_async_register.sclp_receive_mask & EVTYP_ASYNC_MASK)) { - rc = -EOPNOTSUPP; + rc = -EOPNOTSUPP; + if (!(sclp_async_register.sclp_receive_mask & EVTYP_ASYNC_MASK)) goto out_sclp; - } rc = -ENOMEM; + callhome_sysctl_header = register_sysctl_table(kern_dir_table); + if (!callhome_sysctl_header) + goto out_sclp; request = kzalloc(sizeof(struct sclp_req), GFP_KERNEL); - if (!request) - goto out_sys; sccb = (struct sclp_async_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); - if (!sccb) + if (!request || !sccb) goto out_mem; - rc = atomic_notifier_chain_register(&panic_notifier_list, - &call_home_panic_nb); + rc = atomic_notifier_chain_register(&panic_notifier_list, + &call_home_panic_nb); if (rc) goto out_mem; - strncpy(nodename, init_utsname()->nodename, 64); - return 0; - + goto out; out_mem: kfree(request); free_page((unsigned long) sccb); -out_sys: unregister_sysctl_table(callhome_sysctl_header); out_sclp: sclp_unregister(&sclp_async_register); +out: return rc; - } module_init(sclp_async_init); |