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>

17 files changed, 68 insertions, 57 deletions

diff --git a/kernel/arch/arm/mach-spear/generic.h b/kernel/arch/arm/mach-spear/generic.h
index a99d90a4d..06640914d 100644
--- a/kernel/arch/arm/mach-spear/generic.h
+++ b/kernel/arch/arm/mach-spear/generic.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009-2012 ST Microelectronics
  * Rajeev Kumar <rajeev-dlh.kumar@st.com>
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/hotplug.c b/kernel/arch/arm/mach-spear/hotplug.c
index d97749c64..12edd1cf8 100644
--- a/kernel/arch/arm/mach-spear/hotplug.c
+++ b/kernel/arch/arm/mach-spear/hotplug.c
@@ -80,7 +80,7 @@ static inline void spear13xx_do_lowpower(unsigned int cpu, int *spurious)
  *
  * Called with IRQs disabled
  */
-void __ref spear13xx_cpu_die(unsigned int cpu)
+void spear13xx_cpu_die(unsigned int cpu)
 {
 	int spurious = 0;
 
diff --git a/kernel/arch/arm/mach-spear/include/mach/irqs.h b/kernel/arch/arm/mach-spear/include/mach/irqs.h
index 92da0a8c6..7058720c5 100644
--- a/kernel/arch/arm/mach-spear/include/mach/irqs.h
+++ b/kernel/arch/arm/mach-spear/include/mach/irqs.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009-2012 ST Microelectronics
  * Rajeev Kumar <rajeev-dlh.kumar@st.com>
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/include/mach/misc_regs.h b/kernel/arch/arm/mach-spear/include/mach/misc_regs.h
index 935639ce5..cfaf7c665 100644
--- a/kernel/arch/arm/mach-spear/include/mach/misc_regs.h
+++ b/kernel/arch/arm/mach-spear/include/mach/misc_regs.h
@@ -4,7 +4,7 @@
  * Miscellaneous registers definitions for SPEAr3xx machine family
  *
  * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/include/mach/spear.h b/kernel/arch/arm/mach-spear/include/mach/spear.h
index f2d6a0176..5ed841ccf 100644
--- a/kernel/arch/arm/mach-spear/include/mach/spear.h
+++ b/kernel/arch/arm/mach-spear/include/mach/spear.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009,2012 ST Microelectronics
  * Rajeev Kumar<rajeev-dlh.kumar@st.com>
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/include/mach/uncompress.h b/kernel/arch/arm/mach-spear/include/mach/uncompress.h
index 51b2dc93e..8439b9c12 100644
--- a/kernel/arch/arm/mach-spear/include/mach/uncompress.h
+++ b/kernel/arch/arm/mach-spear/include/mach/uncompress.h
@@ -4,7 +4,7 @@
  * Serial port stubs for kernel decompress status messages
  *
  * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/pl080.c b/kernel/arch/arm/mach-spear/pl080.c
index cfa1199d0..b4529f3e0 100644
--- a/kernel/arch/arm/mach-spear/pl080.c
+++ b/kernel/arch/arm/mach-spear/pl080.c
@@ -4,7 +4,7 @@
  * DMAC pl080 definitions for SPEAr platform
  *
  * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/pl080.h b/kernel/arch/arm/mach-spear/pl080.h
index eb6590ded..608dec672 100644
--- a/kernel/arch/arm/mach-spear/pl080.h
+++ b/kernel/arch/arm/mach-spear/pl080.h
@@ -4,7 +4,7 @@
  * DMAC pl080 definitions for SPEAr platform
  *
  * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/restart.c b/kernel/arch/arm/mach-spear/restart.c
index ce5e098c4..b4342155a 100644
--- a/kernel/arch/arm/mach-spear/restart.c
+++ b/kernel/arch/arm/mach-spear/restart.c
@@ -4,7 +4,7 @@
  * SPEAr platform specific restart functions
  *
  * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear1310.c b/kernel/arch/arm/mach-spear/spear1310.c
index d9ce4d800..cd5d375d9 100644
--- a/kernel/arch/arm/mach-spear/spear1310.c
+++ b/kernel/arch/arm/mach-spear/spear1310.c
@@ -4,7 +4,7 @@
  * SPEAr1310 machine source file
  *
  * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear1340.c b/kernel/arch/arm/mach-spear/spear1340.c
index 3f3c0f124..94594d5a4 100644
--- a/kernel/arch/arm/mach-spear/spear1340.c
+++ b/kernel/arch/arm/mach-spear/spear1340.c
@@ -4,7 +4,7 @@
  * SPEAr1340 machine source file
  *
  * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear13xx.c b/kernel/arch/arm/mach-spear/spear13xx.c
index 2e463a934..ca2f6a82a 100644
--- a/kernel/arch/arm/mach-spear/spear13xx.c
+++ b/kernel/arch/arm/mach-spear/spear13xx.c
@@ -4,7 +4,7 @@
  * SPEAr13XX machines common source file
  *
  * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
@@ -124,5 +124,5 @@ void __init spear13xx_timer_init(void)
 	clk_put(pclk);
 
 	spear_setup_of_timer();
-	clocksource_of_init();
+	clocksource_probe();
 }
diff --git a/kernel/arch/arm/mach-spear/spear300.c b/kernel/arch/arm/mach-spear/spear300.c
index b52e48f34..5b32edda2 100644
--- a/kernel/arch/arm/mach-spear/spear300.c
+++ b/kernel/arch/arm/mach-spear/spear300.c
@@ -4,7 +4,7 @@
  * SPEAr300 machine source file
  *
  * Copyright (C) 2009-2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear310.c b/kernel/arch/arm/mach-spear/spear310.c
index ed2029db3..86a44ac7f 100644
--- a/kernel/arch/arm/mach-spear/spear310.c
+++ b/kernel/arch/arm/mach-spear/spear310.c
@@ -4,7 +4,7 @@
  * SPEAr310 machine source file
  *
  * Copyright (C) 2009-2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear320.c b/kernel/arch/arm/mach-spear/spear320.c
index bf634b32a..d45d75192 100644
--- a/kernel/arch/arm/mach-spear/spear320.c
+++ b/kernel/arch/arm/mach-spear/spear320.c
@@ -4,7 +4,7 @@
  * SPEAr320 machine source file
  *
  * Copyright (C) 2009-2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/spear3xx.c b/kernel/arch/arm/mach-spear/spear3xx.c
index bf3b1fd8c..23394ac76 100644
--- a/kernel/arch/arm/mach-spear/spear3xx.c
+++ b/kernel/arch/arm/mach-spear/spear3xx.c
@@ -4,7 +4,7 @@
  * SPEAr3XX machines common source file
  *
  * Copyright (C) 2009-2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
+ * Viresh Kumar <vireshk@kernel.org>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/kernel/arch/arm/mach-spear/time.c b/kernel/arch/arm/mach-spear/time.c
index 26fda4ed4..9ccffc1d0 100644
--- a/kernel/arch/arm/mach-spear/time.c
+++ b/kernel/arch/arm/mach-spear/time.c
@@ -66,8 +66,6 @@
 static __iomem void *gpt_base;
 static struct clk *gpt_clk;
 
-static void clockevent_set_mode(enum clock_event_mode mode,
-				struct clock_event_device *clk_event_dev);
 static int clockevent_next_event(unsigned long evt,
 				 struct clock_event_device *clk_event_dev);
 
@@ -95,54 +93,67 @@ static void __init spear_clocksource_init(void)
 		200, 16, clocksource_mmio_readw_up);
 }
 
-static struct clock_event_device clkevt = {
-	.name = "tmr0",
-	.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-	.set_mode = clockevent_set_mode,
-	.set_next_event = clockevent_next_event,
-	.shift = 0,	/* to be computed */
-};
+static inline void timer_shutdown(struct clock_event_device *evt)
+{
+	u16 val = readw(gpt_base + CR(CLKEVT));
+
+	/* stop the timer */
+	val &= ~CTRL_ENABLE;
+	writew(val, gpt_base + CR(CLKEVT));
+}
+
+static int spear_shutdown(struct clock_event_device *evt)
+{
+	timer_shutdown(evt);
+
+	return 0;
+}
+
+static int spear_set_oneshot(struct clock_event_device *evt)
+{
+	u16 val;
 
-static void clockevent_set_mode(enum clock_event_mode mode,
-				struct clock_event_device *clk_event_dev)
+	/* stop the timer */
+	timer_shutdown(evt);
+
+	val = readw(gpt_base + CR(CLKEVT));
+	val |= CTRL_ONE_SHOT;
+	writew(val, gpt_base + CR(CLKEVT));
+
+	return 0;
+}
+
+static int spear_set_periodic(struct clock_event_device *evt)
 {
 	u32 period;
 	u16 val;
 
 	/* stop the timer */
+	timer_shutdown(evt);
+
+	period = clk_get_rate(gpt_clk) / HZ;
+	period >>= CTRL_PRESCALER16;
+	writew(period, gpt_base + LOAD(CLKEVT));
+
 	val = readw(gpt_base + CR(CLKEVT));
-	val &= ~CTRL_ENABLE;
+	val &= ~CTRL_ONE_SHOT;
+	val |= CTRL_ENABLE | CTRL_INT_ENABLE;
 	writew(val, gpt_base + CR(CLKEVT));
 
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		period = clk_get_rate(gpt_clk) / HZ;
-		period >>= CTRL_PRESCALER16;
-		writew(period, gpt_base + LOAD(CLKEVT));
-
-		val = readw(gpt_base + CR(CLKEVT));
-		val &= ~CTRL_ONE_SHOT;
-		val |= CTRL_ENABLE | CTRL_INT_ENABLE;
-		writew(val, gpt_base + CR(CLKEVT));
-
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-		val = readw(gpt_base + CR(CLKEVT));
-		val |= CTRL_ONE_SHOT;
-		writew(val, gpt_base + CR(CLKEVT));
-
-		break;
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-	case CLOCK_EVT_MODE_RESUME:
-
-		break;
-	default:
-		pr_err("Invalid mode requested\n");
-		break;
-	}
+	return 0;
 }
 
+static struct clock_event_device clkevt = {
+	.name = "tmr0",
+	.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+	.set_state_shutdown = spear_shutdown,
+	.set_state_periodic = spear_set_periodic,
+	.set_state_oneshot = spear_set_oneshot,
+	.tick_resume = spear_shutdown,
+	.set_next_event = clockevent_next_event,
+	.shift = 0,	/* to be computed */
+};
+
 static int clockevent_next_event(unsigned long cycles,
 				 struct clock_event_device *clk_event_dev)
 {
@@ -193,7 +204,7 @@ static void __init spear_clockevent_init(int irq)
 	setup_irq(irq, &spear_timer_irq);
 }
 
-const static struct of_device_id timer_of_match[] __initconst = {
+static const struct of_device_id const timer_of_match[] __initconst = {
 	{ .compatible = "st,spear-timer", },
 	{ },
 };