linux-kernel - [PATCH 4.14 16/22] clk: sunxi-ng: Fix missing CLK_SET_RATE

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Message-Id: <20180816171625.000398523@linuxfoundation.org>
Date:   Thu, 16 Aug 2018 20:45:17 +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, Chen-Yu Tsai <wens@...e.org>,
        Alexander Syring <alex@...ring.de>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 4.14 16/22] clk: sunxi-ng: Fix missing CLK_SET_RATE_PARENT in ccu-sun4i-a10.c

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

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

From: Alexander Syring <alex@...ring.de>

commit a894990ac994a53bc5a0cc694eb12f3c064c18c5 upstream.

When using cpufreq-dt with default govenor other than "performance"
system freezes while booting.
Adding CLK_SET_RATE_PARENT | CLK_IS_CRITICAL to clk_cpu fixes the
problem.

Tested on Cubietruck (A20).

Fixes: c84f5683f6E ("clk: sunxi-ng: Add sun4i/sun7i CCU driver")
Acked-by: Chen-Yu Tsai <wens@...e.org>
Signed-off-by: Alexander Syring <alex@...ring.de>
Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/sunxi-ng/ccu-sun4i-a10.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c
+++ b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c
@@ -223,7 +223,7 @@ static struct ccu_mux cpu_clk = {
 		.hw.init	= CLK_HW_INIT_PARENTS("cpu",
 						      cpu_parents,
 						      &ccu_mux_ops,
-						      CLK_IS_CRITICAL),
+						      CLK_SET_RATE_PARENT | CLK_IS_CRITICAL),
 	}
 };