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dynamic_debug: simplify dynamic_debug_init error exit

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We dont want errors while parsing ddebug_query to unload ddebug
tables, so set success after tables are loaded, and return 0 after
query parsing is done.

Simplify error handling code since its no longer used for success,
and change goto label to out_err to clarify this.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jim Cromie 2012-04-27 14:30:38 -06:00 committed by Greg Kroah-Hartman
parent 6ab676e964
commit af442399fc
1 changed files with 8 additions and 11 deletions
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19
lib/dynamic_debug.c
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@ -984,7 +984,7 @@ static int __init dynamic_debug_init(void)
if (strcmp(modname, iter->modname)) {
ret = ddebug_add_module(iter_start, n, modname);
if (ret)
goto out_free;
goto out_err;
n = 0;
modname = iter->modname;
iter_start = iter;
@ -993,9 +993,11 @@ static int __init dynamic_debug_init(void)
}
ret = ddebug_add_module(iter_start, n, modname);
if (ret)
goto out_free;
goto out_err;
/* ddebug_query boot param got passed -> set it up */
ddebug_init_success = 1;
/* apply ddebug_query boot param, dont unload tables on err */
if (ddebug_setup_string[0] != '\0') {
pr_warn("ddebug_query param name is deprecated,"
" change it to dyndbg\n");
@ -1005,9 +1007,6 @@ static int __init dynamic_debug_init(void)
ddebug_setup_string);
else
pr_info("%d changes by ddebug_query\n", ret);
/* keep tables even on ddebug_query parse error */
ret = 0;
}
/* now that ddebug tables are loaded, process all boot args
* again to find and activate queries given in dyndbg params.
@ -1021,12 +1020,10 @@ static int __init dynamic_debug_init(void)
parse_args("dyndbg params", cmdline, NULL,
0, 0, 0, &ddebug_dyndbg_boot_param_cb);
kfree(cmdline);
return 0;
out_free:
if (ret)
ddebug_remove_all_tables();
else
ddebug_init_success = 1;
out_err:
ddebug_remove_all_tables();
return 0;
}
/* Allow early initialization for boot messages via boot param */