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

From: Greg Kroah-Hartman
Date: Fri Oct 21 2016 - 05:18:44 EST

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


From: Marcin Wojtas <mw@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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;