linux-kernel - [PATCH] clk: reverse default clk provider initialization order in of_clk

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Date:	Thu, 27 Mar 2014 11:43:32 +0100
From:	Sylwester Nawrocki <s.nawrocki@...sung.com>
To:	mturquette@...aro.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	b.brezillon@...rkiz.com, khilman@...aro.org, festevam@...il.com,
	shawn.guo@...aro.org, nicolas.ferre@...el.com,
	sebastian.hesselbarth@...il.com, plagnioj@...osoft.com,
	Sylwester Nawrocki <s.nawrocki@...sung.com>
Subject: [PATCH] clk: reverse default clk provider initialization order in
 of_clk_init()

This restores the default clocks registration order as parsed from
devicetree, i.e. as before commit 1771b10d605d26ccee771a7fb4b08718
"clk: respect the clock dependencies in of_clk_init", for when there
is no explicit parent clock dependencies between clock providers
specified in the device tree.

It prevents regressions (boot failure, division by 0 errors) on
imx and exynos platforms.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
---
 drivers/clk/clk.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 07cba07..c859adf 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2596,7 +2596,7 @@ void __init of_clk_init(const struct of_device_id *matches)
 
 		parent->clk_init_cb = match->data;
 		parent->np = np;
-		list_add(&parent->node, &clk_provider_list);
+		list_add_tail(&parent->node, &clk_provider_list);
 	}
 
 	while (!list_empty(&clk_provider_list)) {
-- 
1.7.9.5

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