ftrace: Pass retval through return in ftrace_dyn_arch_init()

No architecture uses the "data" parameter in ftrace_dyn_arch_init() in any
way, it just sets the value to 0. And this is used as a return value
in the caller -- ftrace_init, which just checks the retval against
zero.

Note there is also "return 0" in every ftrace_dyn_arch_init.  So it is
enough to check the retval and remove all the indirect sets of data on
all archs.

Link: http://lkml.kernel.org/r/1393268401-24379-3-git-send-email-jslaby@suse.cz

Cc: linux-arch@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 76b6ed29d856..083c6d5fce25 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4379,11 +4379,9 @@ void __init ftrace_init(void)
         addr = (unsigned long)ftrace_stub;
 
         local_irq_save(flags);
-        ftrace_dyn_arch_init(&addr);
+        ret = ftrace_dyn_arch_init(&addr);
         local_irq_restore(flags);
-
-        /* ftrace_dyn_arch_init places the return code in addr */
-        if (addr)
+        if (ret)
                 goto failed;
 
         count = __stop_mcount_loc - __start_mcount_loc;