linux-kernel - [PATCH V2 2/3] clk: skip re-parenting orphan clk

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Message-ID: <1371458384-23936-3-git-send-email-ambresh@ti.com>
Date:	Mon, 17 Jun 2013 14:09:43 +0530
From:	Ambresh K <ambresh@...com>
To:	Mike Turquette <mturquette@...aro.org>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	Tero Kristo <t-kristo@...com>, Rajendra <rnayak@...com>,
	Ambresh K <ambresh@...com>, Nishanth Menon <nm@...com>,
	Tony Lindgren <tony@...mide.com>,
	Paul Walmsley <paul@...an.com>
Subject: [PATCH V2 2/3] clk: skip re-parenting orphan clk

From: Ambresh K <ambresh@...com>

If clk is same as orphan clk then skip the iteration, there
by avoiding unnecessary look-up.

Signed-off-by: Ambresh K <ambresh@...com>
---
 drivers/clk/clk.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 2842450..57bb94a 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1633,6 +1633,10 @@ int __clk_init(struct device *dev, struct clk *clk)
 	 * this clock
 	 */
 	hlist_for_each_entry_safe(orphan, tmp2, &clk_orphan_list, child_node) {
+		/* Skip if clk is same as orphan clk */
+		if (!strcmp(clk->name, orphan->name))
+			continue;
+
 		if (orphan->ops->get_parent) {
 			i = orphan->ops->get_parent(orphan->hw);
 			if (i < 0) {
-- 
1.7.4.1

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