mvebu: backport upstream fixes for armada 37xx

Upstream patches for processor frequency scaling, which fix possible
system hard lockups.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>

1 files changed, 33 insertions, 0 deletions

diff --git a/target/linux/mvebu/patches-4.14/512-clk-mvebu-armada-37xx-periph-Remove-unused-var-num_p.patch b/target/linux/mvebu/patches-4.14/512-clk-mvebu-armada-37xx-periph-Remove-unused-var-num_p.patch
new file mode 100644
index 0000000000..874f982bd7
--- /dev/null
+++ b/target/linux/mvebu/patches-4.14/512-clk-mvebu-armada-37xx-periph-Remove-unused-var-num_p.patch
@@ -0,0 +1,33 @@
+From 8927c27b32703e28041ae19bf25ea53461be83a1 Mon Sep 17 00:00:00 2001
+From: Anders Roxell <anders.roxell@linaro.org>
+Date: Fri, 27 Jul 2018 00:27:21 +0200
+Subject: [PATCH] clk: mvebu: armada-37xx-periph: Remove unused var num_parents
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When building armada-37xx-periph, num_parents isn't used in function
+clk_pm_cpu_get_parent:
+drivers/clk/mvebu/armada-37xx-periph.c: In function ‘clk_pm_cpu_get_parent’:
+drivers/clk/mvebu/armada-37xx-periph.c:419:6: warning: unused variable ‘num_parents’ [-Wunused-variable]
+  int num_parents = clk_hw_get_num_parents(hw);
+      ^~~~~~~~~~~
+Remove the declaration of num_parents to dispose the warning.
+
+Fixes: 616bf80d381d ("clk: mvebu: armada-37xx-periph: Fix wrong return value in get_parent")
+Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+---
+ drivers/clk/mvebu/armada-37xx-periph.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/clk/mvebu/armada-37xx-periph.c
++++ b/drivers/clk/mvebu/armada-37xx-periph.c
+@@ -419,7 +419,6 @@ static unsigned int armada_3700_pm_dvfs_
+ static u8 clk_pm_cpu_get_parent(struct clk_hw *hw)
+ {
+ 	struct clk_pm_cpu *pm_cpu = to_clk_pm_cpu(hw);
+-	int num_parents = clk_hw_get_num_parents(hw);
+ 	u32 val;
+ 
+ 	if (armada_3700_pm_dvfs_is_enabled(pm_cpu->nb_pm_base)) {