[PATCH 08/18] CLK: Check and do not allow to register clock twice.

From: Andrey Panov <rockford@yandex.ru>
To: barebox@lists.infradead.org
Subject: [PATCH 08/18] CLK: Check and do not allow to register clock twice.
Date: Mon,  2 Mar 2015 23:21:52 +0300	[thread overview]
Message-ID: <1425327722-28232-9-git-send-email-rockford@yandex.ru> (raw)
In-Reply-To: <1425327722-28232-1-git-send-email-rockford@yandex.ru>

Signed-off-by: Andrey Panov <rockford@yandex.ru>
---
 drivers/clk/clk.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 584e2f3..5f78c9c 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -212,8 +212,17 @@ struct clk *clk_get_parent(struct clk *clk)
 
 int clk_register(struct clk *clk)
 {
+	struct clk *c;
+
 	clk->parents = xzalloc(sizeof(struct clk *) * clk->num_parents);
 
+	list_for_each_entry(c, &clks, list) {
+		if (!strcmp(c->name, clk->name)){
+			pr_err("%s clk %s is already registered, skipping!\n", __func__, clk->name);
+			return 0;
+		}
+	}
+
 	list_add_tail(&clk->list, &clks);
 
 	return 0;
-- 
2.1.4


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