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qla2xxx: Unregister chrdev if module initialization fails

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If module initialization fails after the character device has been
registered, unregister the character device. Additionally, avoid
duplicating error path code.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8235 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2019-04-14 01:34:50 +00:00
parent 0f7639a9a2
commit bfefaa0180
1 changed files with 21 additions and 13 deletions
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34
qla2x00t-32gbit/qla_os.c
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@@ -7462,8 +7462,7 @@ qla2x00_module_init(void)
/* Initialize target kmem_cache and mem_pools */
ret = qlt_init();
if (ret < 0) {
kmem_cache_destroy(srb_cachep);
return ret;
goto destroy_cache;
} else if (ret > 0) {
/*
* If initiator mode is explictly disabled by qlt_init(),
@@ -7487,11 +7486,10 @@ qla2x00_module_init(void)
qla2xxx_transport_template =
fc_attach_transport(&qla2xxx_transport_functions);
if (!qla2xxx_transport_template) {
kmem_cache_destroy(srb_cachep);
ql_log(ql_log_fatal, NULL, 0x0002,
"fc_attach_transport failed...Failing load!.\n");
qlt_exit();
return -ENODEV;
ret = -ENODEV;
goto qlt_exit;
}
apidev_major = register_chrdev(0, QLA2XXX_APIDEV, &apidev_fops);
@@ -7503,27 +7501,37 @@ qla2x00_module_init(void)
qla2xxx_transport_vport_template =
fc_attach_transport(&qla2xxx_transport_vport_functions);
if (!qla2xxx_transport_vport_template) {
kmem_cache_destroy(srb_cachep);
qlt_exit();
fc_release_transport(qla2xxx_transport_template);
ql_log(ql_log_fatal, NULL, 0x0004,
"fc_attach_transport vport failed...Failing load!.\n");
return -ENODEV;
ret = -ENODEV;
goto unreg_chrdev;
}
ql_log(ql_log_info, NULL, 0x0005,
"QLogic Fibre Channel HBA Driver: %s.\n",
qla2x00_version_str);
ret = pci_register_driver(&qla2xxx_pci_driver);
if (ret) {
kmem_cache_destroy(srb_cachep);
qlt_exit();
fc_release_transport(qla2xxx_transport_template);
fc_release_transport(qla2xxx_transport_vport_template);
ql_log(ql_log_fatal, NULL, 0x0006,
"pci_register_driver failed...ret=%d Failing load!.\n",
ret);
goto release_vport_transport;
}
return ret;
release_vport_transport:
fc_release_transport(qla2xxx_transport_vport_template);
unreg_chrdev:
if (apidev_major >= 0)
unregister_chrdev(apidev_major, QLA2XXX_APIDEV);
fc_release_transport(qla2xxx_transport_template);
qlt_exit:
qlt_exit();
destroy_cache:
kmem_cache_destroy(srb_cachep);
return ret;
}
/**