linux-kernel - [PATCH] init/main.c: fix initcall_blacklisted on ia64, ppc64 and parisc64

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Message-Id: <1466027283-4065-1-git-send-email-linux@rasmusvillemoes.dk>
Date:	Wed, 15 Jun 2016 23:48:01 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Yang Shi <yang.shi@...aro.org>,
	Prarit Bhargava <prarit@...hat.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Petr Mladek <pmladek@...e.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] init/main.c: fix initcall_blacklisted on ia64, ppc64 and parisc64

When I replaced kasprintf("%pf") with a direct call to
sprint_symbol_no_offset I must have broken the initcall blacklisting
feature on the arches where dereference_function_descriptor() is
non-trivial.

Fixes: c8cdd2be213f (init/main.c: simplify initcall_blacklisted())
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 init/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/init/main.c b/init/main.c
index 4c17fda5c2ff..63a5afb54f25 100644
--- a/init/main.c
+++ b/init/main.c
@@ -708,11 +708,13 @@ static bool __init_or_module initcall_blacklisted(initcall_t fn)
 {
 	struct blacklist_entry *entry;
 	char fn_name[KSYM_SYMBOL_LEN];
+	unsigned long addr;
 
 	if (list_empty(&blacklisted_initcalls))
 		return false;
 
-	sprint_symbol_no_offset(fn_name, (unsigned long)fn);
+	addr = (unsigned long) dereference_function_descriptor(fn);
+	sprint_symbol_no_offset(fn_name, addr);
 
 	list_for_each_entry(entry, &blacklisted_initcalls, next) {
 		if (!strcmp(fn_name, entry->buf)) {
-- 
2.1.4