diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm/mach-mvebu/pmsu.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm/mach-mvebu/pmsu.c')
-rw-r--r-- | kernel/arch/arm/mach-mvebu/pmsu.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/kernel/arch/arm/mach-mvebu/pmsu.c b/kernel/arch/arm/mach-mvebu/pmsu.c index 4f4e22206..ed8fda4cd 100644 --- a/kernel/arch/arm/mach-mvebu/pmsu.c +++ b/kernel/arch/arm/mach-mvebu/pmsu.c @@ -296,11 +296,11 @@ int armada_370_xp_pmsu_idle_enter(unsigned long deepidle) /* Test the CR_C bit and set it if it was cleared */ asm volatile( "mrc p15, 0, r0, c1, c0, 0 \n\t" - "tst r0, #(1 << 2) \n\t" + "tst r0, %0 \n\t" "orreq r0, r0, #(1 << 2) \n\t" "mcreq p15, 0, r0, c1, c0, 0 \n\t" "isb " - : : : "r0"); + : : "Ir" (CR_C) : "r0"); pr_debug("Failed to suspend the system\n"); @@ -379,6 +379,16 @@ static struct notifier_block mvebu_v7_cpu_pm_notifier = { static struct platform_device mvebu_v7_cpuidle_device; +static int broken_idle(struct device_node *np) +{ + if (of_property_read_bool(np, "broken-idle")) { + pr_warn("CPU idle is currently broken: disabling\n"); + return 1; + } + + return 0; +} + static __init int armada_370_cpuidle_init(void) { struct device_node *np; @@ -387,7 +397,9 @@ static __init int armada_370_cpuidle_init(void) np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric"); if (!np) return -ENODEV; - of_node_put(np); + + if (broken_idle(np)) + goto end; /* * On Armada 370, there is "a slow exit process from the deep @@ -406,6 +418,8 @@ static __init int armada_370_cpuidle_init(void) mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend; mvebu_v7_cpuidle_device.name = "cpuidle-armada-370"; +end: + of_node_put(np); return 0; } @@ -415,13 +429,17 @@ static __init int armada_38x_cpuidle_init(void) void __iomem *mpsoc_base; u32 reg; - pr_warn("CPU idle is currently broken on Armada 38x: disabling"); + pr_warn("CPU idle is currently broken on Armada 38x: disabling\n"); return 0; np = of_find_compatible_node(NULL, NULL, "marvell,armada-380-coherency-fabric"); if (!np) return -ENODEV; + + if (broken_idle(np)) + goto end; + of_node_put(np); np = of_find_compatible_node(NULL, NULL, @@ -430,7 +448,6 @@ static __init int armada_38x_cpuidle_init(void) return -ENODEV; mpsoc_base = of_iomap(np, 0); BUG_ON(!mpsoc_base); - of_node_put(np); /* Set up reset mask when powering down the cpus */ reg = readl(mpsoc_base + MPCORE_RESET_CTL); @@ -450,6 +467,8 @@ static __init int armada_38x_cpuidle_init(void) mvebu_v7_cpuidle_device.dev.platform_data = armada_38x_cpu_suspend; mvebu_v7_cpuidle_device.name = "cpuidle-armada-38x"; +end: + of_node_put(np); return 0; } @@ -460,12 +479,16 @@ static __init int armada_xp_cpuidle_init(void) np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric"); if (!np) return -ENODEV; - of_node_put(np); + + if (broken_idle(np)) + goto end; mvebu_cpu_resume = armada_370_xp_cpu_resume; mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend; mvebu_v7_cpuidle_device.name = "cpuidle-armada-xp"; +end: + of_node_put(np); return 0; } @@ -486,7 +509,7 @@ static int __init mvebu_v7_cpu_pm_init(void) */ if (of_machine_is_compatible("marvell,armada380")) { cpu_hotplug_disable(); - pr_warn("CPU hotplug support is currently broken on Armada 38x: disabling"); + pr_warn("CPU hotplug support is currently broken on Armada 38x: disabling\n"); } if (of_machine_is_compatible("marvell,armadaxp")) |