linux-kernel - [PATCH 08/16] clk: drop the initial core->parents look-ups from __clk_core

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 30 Nov 2015 16:34:45 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	linux-clk@...r.kernel.org
Cc:	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Michael Turquette <mturquette@...libre.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 08/16] clk: drop the initial core->parents look-ups from __clk_core_init()

The core->parents is a cache to save expensive clock parent look-ups.
It will be filled as needed later.  We do not have to do it here.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 drivers/clk/clk.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index f2758c4..43fb329 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2329,17 +2329,6 @@ static int __clk_core_init(struct clk_core *core)
 				"%s: invalid NULL in %s's .parent_names\n",
 				__func__, core->name);
 
-	/*
-	 * clk_core_lookup returns NULL for parents that have not been
-	 * clk_init'd; thus any access to clk->parents[] must check
-	 * for a NULL pointer.  We can always perform lazy lookups for
-	 * missing parents later on.
-	 */
-	if (core->parents)
-		for (i = 0; i < core->num_parents; i++)
-			core->parents[i] =
-				clk_core_lookup(core->parent_names[i]);
-
 	core->parent = __clk_init_parent(core);
 
 	/*
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/