linux-kernel - [PATCH 4.7 16/45] clk: mvebu: fix setting unwanted flags in CP110 gate clock

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Message-Id: <20161021091428.131283524@linuxfoundation.org>
Date:   Fri, 21 Oct 2016 11:17:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Marcin Wojtas <mw@...ihalf.com>,
        Stephen Boyd <sboyd@...eaurora.org>
Subject: [PATCH 4.7 16/45] clk: mvebu: fix setting unwanted flags in CP110 gate clock

4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marcin Wojtas <mw@...ihalf.com>

commit ad715b268a501533ecb2e891a624841d1bb5137c upstream.

Armada CP110 system controller comprises its own routine responsble
for registering gate clocks. Among others 'flags' field in
struct clk_init_data was not set, using a random values, which
may cause an unpredicted behavior.

This patch fixes the problem by resetting all fields of clk_init_data
before assigning values for all gated clocks of Armada 7k/8k SoCs family.

Fixes: d3da3eaef7f4 ("clk: mvebu: new driver for Armada CP110 system ...")
Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/mvebu/cp110-system-controller.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/clk/mvebu/cp110-system-controller.c
+++ b/drivers/clk/mvebu/cp110-system-controller.c
@@ -142,6 +142,8 @@ static struct clk *cp110_register_gate(c
 	if (!gate)
 		return ERR_PTR(-ENOMEM);
 
+	memset(&init, 0, sizeof(init));
+
 	init.name = name;
 	init.ops = &cp110_gate_ops;
 	init.parent_names = &parent_name;