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-rw-r--r--target/linux/mvebu/patches-3.18/031-disable_cpu_idle_on_armada_38x.patch62
1 files changed, 0 insertions, 62 deletions
diff --git a/target/linux/mvebu/patches-3.18/031-disable_cpu_idle_on_armada_38x.patch b/target/linux/mvebu/patches-3.18/031-disable_cpu_idle_on_armada_38x.patch
deleted file mode 100644
index 31a73a504c..0000000000
--- a/target/linux/mvebu/patches-3.18/031-disable_cpu_idle_on_armada_38x.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-On Armada 38x SoCs, under heavy I/O load, the system hangs when CPU
-Idle is enabled. Waiting for a solution to this issue, this patch
-disables the CPU Idle support for this SoC.
-
-As CPU Hot plug support also uses some of the CPU Idle functions it is
-also affected by the same issue. This patch disables it also for the
-Armada 38x SoCs.
-
-Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
-Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Cc: <stable@vger.kernel.org> # v3.17 +
----
-Hi,
-
-In this version I removed the unneeded initialization of the ret
-variable, I also fixed the warning message, and finally I added the
-Tested-by from Thomas.
-
-Gregory
-
- arch/arm/mach-mvebu/pmsu.c | 16 +++++++++++++++-
- 1 file changed, 15 insertions(+), 1 deletion(-)
-
---- a/arch/arm/mach-mvebu/pmsu.c
-+++ b/arch/arm/mach-mvebu/pmsu.c
-@@ -415,6 +415,9 @@ static __init int armada_38x_cpuidle_ini
- void __iomem *mpsoc_base;
- u32 reg;
-
-+ pr_warn("CPU idle is currently broken on Armada 38x: disabling");
-+ return 0;
-+
- np = of_find_compatible_node(NULL, NULL,
- "marvell,armada-380-coherency-fabric");
- if (!np)
-@@ -476,6 +479,16 @@ static int __init mvebu_v7_cpu_pm_init(v
- return 0;
- of_node_put(np);
-
-+ /*
-+ * Currently the CPU idle support for Armada 38x is broken, as
-+ * the CPU hotplug uses some of the CPU idle functions it is
-+ * broken too, so let's disable it
-+ */
-+ if (of_machine_is_compatible("marvell,armada380")) {
-+ cpu_hotplug_disable();
-+ pr_warn("CPU hotplug support is currently broken on Armada 38x: disabling");
-+ }
-+
- if (of_machine_is_compatible("marvell,armadaxp"))
- ret = armada_xp_cpuidle_init();
- else if (of_machine_is_compatible("marvell,armada370"))
-@@ -489,7 +502,8 @@ static int __init mvebu_v7_cpu_pm_init(v
- return ret;
-
- mvebu_v7_pmsu_enable_l2_powerdown_onidle();
-- platform_device_register(&mvebu_v7_cpuidle_device);
-+ if (mvebu_v7_cpuidle_device.name)
-+ platform_device_register(&mvebu_v7_cpuidle_device);
- cpu_pm_register_notifier(&mvebu_v7_cpu_pm_notifier);
-
- return 0;