21 files changed, 90 insertions, 442 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5e859633ce69..78d8ace57272 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -33,6 +33,7 @@ config SUPERH
 	select GENERIC_ATOMIC64
 	select GENERIC_IRQ_SHOW
 	select GENERIC_SMP_IDLE_THREAD
+	select GENERIC_IDLE_POLL_SETUP
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
 	select GENERIC_STRNCPY_FROM_USER
@@ -148,9 +149,6 @@ config ARCH_HAS_ILOG2_U32
 config ARCH_HAS_ILOG2_U64
 	def_bool n
 
-config ARCH_HAS_DEFAULT_IDLE
-	def_bool y
-
 config NO_IOPORT
 	def_bool !PCI
 	depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
@@ -624,25 +622,7 @@ config SH_CLK_CPG_LEGACY
 endmenu
 
 menu "CPU Frequency scaling"
-
 source "drivers/cpufreq/Kconfig"
-
-config SH_CPU_FREQ
-	tristate "SuperH CPU Frequency driver"
-	depends on CPU_FREQ
-	select CPU_FREQ_TABLE
-	help
-	  This adds the cpufreq driver for SuperH. Any CPU that supports
-	  clock rate rounding through the clock framework can use this
-	  driver. While it will make the kernel slightly larger, this is
-	  harmless for CPUs that don't support rate rounding. The driver
-	  will also generate a notice in the boot log before disabling
-	  itself if the CPU in question is not capable of rate rounding.
-
-	  For details, take a look at <file:Documentation/cpu-freq>.
-
-	  If unsure, say N.
-
 endmenu
 
 source "arch/sh/drivers/Kconfig"
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index aaff7671101b..764530c85aa9 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -254,11 +254,13 @@ static int usbhs_get_id(struct platform_device *pdev)
 	return gpio_get_value(GPIO_PTB3);
 }
 
-static void usbhs_phy_reset(struct platform_device *pdev)
+static int usbhs_phy_reset(struct platform_device *pdev)
 {
 	/* enable vbus if HOST */
 	if (!gpio_get_value(GPIO_PTB3))
 		gpio_set_value(GPIO_PTB5, 1);
+
+	return 0;
 }
 
 static struct renesas_usbhs_platform_info usbhs_info = {
diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index f46848f088e4..c0eec08d8f95 100644
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/list.h>
 #include <linux/platform_device.h>
 #include <linux/mm.h>
@@ -308,11 +309,9 @@ int dma_extend(unsigned int chan, unsigned long op, void *param)
 }
 EXPORT_SYMBOL(dma_extend);
 
-static int dma_read_proc(char *buf, char **start, off_t off,
-			 int len, int *eof, void *data)
+static int dma_proc_show(struct seq_file *m, void *v)
 {
-	struct dma_info *info;
-	char *p = buf;
+	struct dma_info *info = v;
 
 	if (list_empty(&registered_dmac_list))
 		return 0;
@@ -332,14 +331,26 @@ static int dma_read_proc(char *buf, char **start, off_t off,
 			if (!(channel->flags & DMA_CONFIGURED))
 				continue;
 
-			p += sprintf(p, "%2d: %14s    %s\n", i,
-				     info->name, channel->dev_id);
+			seq_printf(m, "%2d: %14s    %s\n", i,
+				   info->name, channel->dev_id);
 		}
 	}
 
-	return p - buf;
+	return 0;
+}
+
+static int dma_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dma_proc_show, NULL);
 }
 
+static const struct file_operations dma_proc_fops = {
+	.open		= dma_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 int register_dmac(struct dma_info *info)
 {
 	unsigned int total_channels, i;
@@ -412,8 +423,7 @@ EXPORT_SYMBOL(unregister_dmac);
 static int __init dma_api_init(void)
 {
 	printk(KERN_NOTICE "DMA: Registering DMA API.\n");
-	return create_proc_read_entry("dma", 0, 0, dma_read_proc, 0)
-		    ? 0 : -ENOMEM;
+	return proc_create("dma", 0, NULL, &dma_proc_fops) ? 0 : -ENOMEM;
 }
 subsys_initcall(dma_api_init);
 
diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index c2c85f6cd738..a162a7f86b2e 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -35,7 +35,7 @@ static unsigned int nr_ports;
 
 static struct sh7786_pcie_hwops {
 	int (*core_init)(void);
-	async_func_ptr *port_init_hw;
+	async_func_t port_init_hw;
 } *sh7786_pcie_hwops;
 
 static struct resource sh7786_pci0_resources[] = {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index b3808c7d67b2..699255d6d1c6 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -3,6 +3,7 @@
 
 #include <asm/cacheflush.h>
 #include <asm/page.h>
+#include <asm-generic/hugetlb.h>
 
 
 static inline int is_hugepage_only_range(struct mm_struct *mm,
diff --git a/arch/sh/include/asm/suspend.h b/arch/sh/include/asm/suspend.h
index e14567a7e9a1..70ae0b2888ab 100644
--- a/arch/sh/include/asm/suspend.h
+++ b/arch/sh/include/asm/suspend.h
@@ -14,9 +14,9 @@ struct swsusp_arch_regs {
 void sh_mobile_call_standby(unsigned long mode);
 
 #ifdef CONFIG_CPU_IDLE
-void sh_mobile_setup_cpuidle(void);
+int sh_mobile_setup_cpuidle(void);
 #else
-static inline void sh_mobile_setup_cpuidle(void) {}
+static inline int sh_mobile_setup_cpuidle(void) { return 0; }
 #endif
 
 /* notifier chains for pre/post sleep hooks */
diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h
index 7d5ac4e48485..45a93669289d 100644
--- a/arch/sh/include/asm/thread_info.h
+++ b/arch/sh/include/asm/thread_info.h
@@ -207,8 +207,6 @@ static inline bool test_and_clear_restore_sigmask(void)
 	return true;
 }
 
-#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
-
 #endif	/* !__ASSEMBLY__ */
 
 #endif /* __KERNEL__ */
diff --git a/arch/sh/include/asm/unistd.h b/arch/sh/include/asm/unistd.h
index 5e90fa2b7eed..e77816c4b9bc 100644
--- a/arch/sh/include/asm/unistd.h
+++ b/arch/sh/include/asm/unistd.h
@@ -30,12 +30,4 @@
 # define __ARCH_WANT_SYS_VFORK
 # define __ARCH_WANT_SYS_CLONE
 
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-# define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
-
 #include <uapi/asm/unistd.h>
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index f259b37874e9..261c8bfd75ce 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_VSYSCALL)		+= vsyscall/
 obj-$(CONFIG_SMP)		+= smp.o
 obj-$(CONFIG_SH_STANDARD_BIOS)	+= sh_bios.o
 obj-$(CONFIG_KGDB)		+= kgdb.o
-obj-$(CONFIG_SH_CPU_FREQ)	+= cpufreq.o
 obj-$(CONFIG_MODULES)		+= sh_ksyms_$(BITS).o module.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index 1ddc876d3b26..d30622592116 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -51,70 +51,53 @@ static int cpuidle_sleep_enter(struct cpuidle_device *dev,
 	return k;
 }
 
-static struct cpuidle_device cpuidle_dev;
 static struct cpuidle_driver cpuidle_driver = {
-	.name			= "sh_idle",
-	.owner			= THIS_MODULE,
-	.en_core_tk_irqen	= 1,
+	.name   = "sh_idle",
+	.owner  = THIS_MODULE,
+	.states = {
+		{
+			.exit_latency = 1,
+			.target_residency = 1 * 2,
+			.power_usage = 3,
+			.flags = CPUIDLE_FLAG_TIME_VALID,
+			.enter = cpuidle_sleep_enter,
+			.name = "C1",
+			.desc = "SuperH Sleep Mode",
+		},
+		{
+			.exit_latency = 100,
+			.target_residency = 1 * 2,
+			.power_usage = 1,
+			.flags = CPUIDLE_FLAG_TIME_VALID,
+			.enter = cpuidle_sleep_enter,
+			.name = "C2",
+			.desc = "SuperH Sleep Mode [SF]",
+			.disabled = true,
+		},
+		{
+			.exit_latency = 2300,
+			.target_residency = 1 * 2,
+			.power_usage = 1,
+			.flags = CPUIDLE_FLAG_TIME_VALID,
+			.enter = cpuidle_sleep_enter,
+			.name = "C3",
+			.desc = "SuperH Mobile Standby Mode [SF]",
+			.disabled = true,
+		},
+	},
+	.safe_state_index = 0,
+	.state_count = 3,
 };
 
-void sh_mobile_setup_cpuidle(void)
+int __init sh_mobile_setup_cpuidle(void)
 {
-	struct cpuidle_device *dev = &cpuidle_dev;
-	struct cpuidle_driver *drv = &cpuidle_driver;
-	struct cpuidle_state *state;
-	int i;
+	int ret;
 
+	if (sh_mobile_sleep_supported & SUSP_SH_SF)
+		cpuidle_driver.states[1].disabled = false;
 
-	for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
-		drv->states[i].name[0] = '\0';
-		drv->states[i].desc[0] = '\0';
-	}
+	if (sh_mobile_sleep_supported & SUSP_SH_STANDBY)
+		cpuidle_driver.states[2].disabled = false;
 
-	i = CPUIDLE_DRIVER_STATE_START;
-
-	state = &drv->states[i++];
-	snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
-	strncpy(state->desc, "SuperH Sleep Mode", CPUIDLE_DESC_LEN);
-	state->exit_latency = 1;
-	state->target_residency = 1 * 2;
-	state->power_usage = 3;
-	state->flags = 0;
-	state->flags |= CPUIDLE_FLAG_TIME_VALID;
-	state->enter = cpuidle_sleep_enter;
-
-	drv->safe_state_index = i-1;
-
-	if (sh_mobile_sleep_supported & SUSP_SH_SF) {
-		state = &drv->states[i++];
-		snprintf(state->name, CPUIDLE_NAME_LEN, "C2");
-		strncpy(state->desc, "SuperH Sleep Mode [SF]",
-			CPUIDLE_DESC_LEN);
-		state->exit_latency = 100;
-		state->target_residency = 1 * 2;
-		state->power_usage = 1;
-		state->flags = 0;
-		state->flags |= CPUIDLE_FLAG_TIME_VALID;
-		state->enter = cpuidle_sleep_enter;
-	}
-
-	if (sh_mobile_sleep_supported & SUSP_SH_STANDBY) {
-		state = &drv->states[i++];
-		snprintf(state->name, CPUIDLE_NAME_LEN, "C3");
-		strncpy(state->desc, "SuperH Mobile Standby Mode [SF]",
-			CPUIDLE_DESC_LEN);
-		state->exit_latency = 2300;
-		state->target_residency = 1 * 2;
-		state->power_usage = 1;
-		state->flags = 0;
-		state->flags |= CPUIDLE_FLAG_TIME_VALID;
-		state->enter = cpuidle_sleep_enter;
-	}
-
-	drv->state_count = i;
-	dev->state_count = i;
-
-	cpuidle_register_driver(&cpuidle_driver);
-
-	cpuidle_register_device(dev);
+	return cpuidle_register(&cpuidle_driver);
 }
diff --git a/arch/sh/kernel/cpu/shmobile/pm.c b/arch/sh/kernel/cpu/shmobile/pm.c
index 08d27fac8d08..ac37b7234f85 100644
--- a/arch/sh/kernel/cpu/shmobile/pm.c
+++ b/arch/sh/kernel/cpu/shmobile/pm.c
@@ -150,8 +150,7 @@ static const struct platform_suspend_ops sh_pm_ops = {
 static int __init sh_pm_init(void)
 {
 	suspend_set_ops(&sh_pm_ops);
-	sh_mobile_setup_cpuidle();
-	return 0;
+	return sh_mobile_setup_cpuidle();
 }
 
 late_initcall(sh_pm_init);
diff --git a/arch/sh/kernel/cpufreq.c b/arch/sh/kernel/cpufreq.c
deleted file mode 100644
index e68b45b6f3f9..000000000000
--- a/arch/sh/kernel/cpufreq.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * arch/sh/kernel/cpufreq.c
- *
- * cpufreq driver for the SuperH processors.
- *
- * Copyright (C) 2002 - 2012 Paul Mundt
- * Copyright (C) 2002 M. R. Brown
- *
- * Clock framework bits from arch/avr32/mach-at32ap/cpufreq.c
- *
- *   Copyright (C) 2004-2007 Atmel Corporation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#define pr_fmt(fmt) "cpufreq: " fmt
-
-#include <linux/types.h>
-#include <linux/cpufreq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/cpumask.h>
-#include <linux/cpu.h>
-#include <linux/smp.h>
-#include <linux/sched.h>	/* set_cpus_allowed() */
-#include <linux/clk.h>
-#include <linux/percpu.h>
-#include <linux/sh_clk.h>
-
-static DEFINE_PER_CPU(struct clk, sh_cpuclk);
-
-static unsigned int sh_cpufreq_get(unsigned int cpu)
-{
-	return (clk_get_rate(&per_cpu(sh_cpuclk, cpu)) + 500) / 1000;
-}
-
-/*
- * Here we notify other drivers of the proposed change and the final change.
- */
-static int sh_cpufreq_target(struct cpufreq_policy *policy,
-			     unsigned int target_freq,
-			     unsigned int relation)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-	cpumask_t cpus_allowed;
-	struct cpufreq_freqs freqs;
-	struct device *dev;
-	long freq;
-
-	if (!cpu_online(cpu))
-		return -ENODEV;
-
-	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed_ptr(current, cpumask_of(cpu));
-
-	BUG_ON(smp_processor_id() != cpu);
-
-	dev = get_cpu_device(cpu);
-
-	/* Convert target_freq from kHz to Hz */
-	freq = clk_round_rate(cpuclk, target_freq * 1000);
-
-	if (freq < (policy->min * 1000) || freq > (policy->max * 1000))
-		return -EINVAL;
-
-	dev_dbg(dev, "requested frequency %u Hz\n", target_freq * 1000);
-
-	freqs.cpu	= cpu;
-	freqs.old	= sh_cpufreq_get(cpu);
-	freqs.new	= (freq + 500) / 1000;
-	freqs.flags	= 0;
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-	set_cpus_allowed_ptr(current, &cpus_allowed);
-	clk_set_rate(cpuclk, freq);
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
-	dev_dbg(dev, "set frequency %lu Hz\n", freq);
-
-	return 0;
-}
-
-static int sh_cpufreq_verify(struct cpufreq_policy *policy)
-{
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, policy->cpu);
-	struct cpufreq_frequency_table *freq_table;
-
-	freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
-	if (freq_table)
-		return cpufreq_frequency_table_verify(policy, freq_table);
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	policy->min = (clk_round_rate(cpuclk, 1) + 500) / 1000;
-	policy->max = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	return 0;
-}
-
-static int sh_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-	struct cpufreq_frequency_table *freq_table;
-	struct device *dev;
-
-	if (!cpu_online(cpu))
-		return -ENODEV;
-
-	dev = get_cpu_device(cpu);
-
-	cpuclk = clk_get(dev, "cpu_clk");
-	if (IS_ERR(cpuclk)) {
-		dev_err(dev, "couldn't get CPU clk\n");
-		return PTR_ERR(cpuclk);
-	}
-
-	policy->cur = policy->min = policy->max = sh_cpufreq_get(cpu);
-
-	freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
-	if (freq_table) {
-		int result;
-
-		result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
-		if (!result)
-			cpufreq_frequency_table_get_attr(freq_table, cpu);
-	} else {
-		dev_notice(dev, "no frequency table found, falling back "
-			   "to rate rounding.\n");
-
-		policy->cpuinfo.min_freq =
-			(clk_round_rate(cpuclk, 1) + 500) / 1000;
-		policy->cpuinfo.max_freq =
-			(clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-	}
-
-	policy->min = policy->cpuinfo.min_freq;
-	policy->max = policy->cpuinfo.max_freq;
-
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
-
-	dev_info(dev, "CPU Frequencies - Minimum %u.%03u MHz, "
-	       "Maximum %u.%03u MHz.\n",
-	       policy->min / 1000, policy->min % 1000,
-	       policy->max / 1000, policy->max % 1000);
-
-	return 0;
-}
-
-static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-
-	cpufreq_frequency_table_put_attr(cpu);
-	clk_put(cpuclk);
-
-	return 0;
-}
-
-static struct freq_attr *sh_freq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver sh_cpufreq_driver = {
-	.owner		= THIS_MODULE,
-	.name		= "sh",
-	.get		= sh_cpufreq_get,
-	.target		= sh_cpufreq_target,
-	.verify		= sh_cpufreq_verify,
-	.init		= sh_cpufreq_cpu_init,
-	.exit		= sh_cpufreq_cpu_exit,
-	.attr		= sh_freq_attr,
-};
-
-static int __init sh_cpufreq_module_init(void)
-{
-	pr_notice("SuperH CPU frequency driver.\n");
-	return cpufreq_register_driver(&sh_cpufreq_driver);
-}
-
-static void __exit sh_cpufreq_module_exit(void)
-{
-	cpufreq_unregister_driver(&sh_cpufreq_driver);
-}
-
-module_init(sh_cpufreq_module_init);
-module_exit(sh_cpufreq_module_exit);
-
-MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>");
-MODULE_DESCRIPTION("cpufreq driver for SuperH");
-MODULE_LICENSE("GPL");
diff --git a/arch/sh/kernel/dumpstack.c b/arch/sh/kernel/dumpstack.c
index 7617dc4129ac..b959f5592604 100644
--- a/arch/sh/kernel/dumpstack.c
+++ b/arch/sh/kernel/dumpstack.c
@@ -158,9 +158,3 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
 		 (unsigned long)task_stack_page(tsk));
 	show_trace(tsk, sp, NULL);
 }
-
-void dump_stack(void)
-{
-	show_stack(NULL, NULL);
-}
-EXPORT_SYMBOL(dump_stack);
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c
index 3d5a1b387cc0..2ea4483fd722 100644
--- a/arch/sh/kernel/idle.c
+++ b/arch/sh/kernel/idle.c
@@ -24,98 +24,24 @@
 
 static void (*sh_idle)(void);
 
-static int hlt_counter;
-
-static int __init nohlt_setup(char *__unused)
-{
-	hlt_counter = 1;
-	return 1;
-}
-__setup("nohlt", nohlt_setup);
-
-static int __init hlt_setup(char *__unused)
-{
-	hlt_counter = 0;
-	return 1;
-}
-__setup("hlt", hlt_setup);
-
-static inline int hlt_works(void)
-{
-	return !hlt_counter;
-}
-
-/*
- * On SMP it's slightly faster (but much more power-consuming!)
- * to poll the ->work.need_resched flag instead of waiting for the
- * cross-CPU IPI to arrive. Use this option with caution.
- */
-static void poll_idle(void)
+void default_idle(void)
 {
+	set_bl_bit();
 	local_irq_enable();
-	while (!need_resched())
-		cpu_relax();
+	/* Isn't this racy ? */
+	cpu_sleep();
+	clear_bl_bit();
 }
 
-void default_idle(void)
+void arch_cpu_idle_dead(void)
 {
-	if (hlt_works()) {
-		clear_thread_flag(TIF_POLLING_NRFLAG);
-		smp_mb__after_clear_bit();
-
-		set_bl_bit();
-		if (!need_resched()) {
-			local_irq_enable();
-			cpu_sleep();
-		} else
-			local_irq_enable();
-
-		set_thread_flag(TIF_POLLING_NRFLAG);
-		clear_bl_bit();
-	} else
-		poll_idle();
+	play_dead();
 }
 
-/*
- * The idle thread. There's no useful work to be done, so just try to conserve
- * power and have a low exit latency (ie sit in a loop waiting for somebody to
- * say that they'd like to reschedule)
- */
-void cpu_idle(void)
+void arch_cpu_idle(void)
 {
-	unsigned int cpu = smp_processor_id();
-
-	set_thread_flag(TIF_POLLING_NRFLAG);
-
-	/* endless idle loop with no priority at all */
-	while (1) {
-		tick_nohz_idle_enter();
-		rcu_idle_enter();
-
-		while (!need_resched()) {
-			check_pgt_cache();
-			rmb();
-
-			if (cpu_is_offline(cpu))
-				play_dead();
-
-			local_irq_disable();
-			/* Don't trace irqs off for idle */
-			stop_critical_timings();
-			if (cpuidle_idle_call())
-				sh_idle();
-			/*
-			 * Sanity check to ensure that sh_idle() returns
-			 * with IRQs enabled
-			 */
-			WARN_ON(irqs_disabled());
-			start_critical_timings();
-		}
-
-		rcu_idle_exit();
-		tick_nohz_idle_exit();
-		schedule_preempt_disabled();
-	}
+	if (cpuidle_idle_call())
+		sh_idle();
 }
 
 void __init select_idle_routine(void)
@@ -123,13 +49,8 @@ void __init select_idle_routine(void)
 	/*
 	 * If a platform has set its own idle routine, leave it alone.
 	 */
-	if (sh_idle)
-		return;
-
-	if (hlt_works())
+	if (!sh_idle)
 		sh_idle = default_idle;
-	else
-		sh_idle = poll_idle;
 }
 
 void stop_this_cpu(void *unused)
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 73eb66fc6253..ebd3933005b4 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -32,11 +32,7 @@
 void show_regs(struct pt_regs * regs)
 {
 	printk("\n");
-	printk("Pid : %d, Comm: \t\t%s\n", task_pid_nr(current), current->comm);
-	printk("CPU : %d        \t\t%s  (%s %.*s)\n\n",
-	       smp_processor_id(), print_tainted(), init_utsname()->release,
-	       (int)strcspn(init_utsname()->version, " "),
-	       init_utsname()->version);
+	show_regs_print_info(KERN_DEFAULT);
 
 	print_symbol("PC is at %s\n", instruction_pointer(regs));
 	print_symbol("PR is at %s\n", regs->pr);
diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index e611c85144b1..174d124b419e 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -40,6 +40,7 @@ void show_regs(struct pt_regs *regs)
 	unsigned long long ah, al, bh, bl, ch, cl;
 
 	printk("\n");
+	show_regs_print_info(KERN_DEFAULT);
 
 	ah = (regs->pc) >> 32;
 	al = (regs->pc) & 0xffffffff;
diff --git a/arch/sh/kernel/sh_bios.c b/arch/sh/kernel/sh_bios.c
index 47475cca068a..fe584e516964 100644
--- a/arch/sh/kernel/sh_bios.c
+++ b/arch/sh/kernel/sh_bios.c
@@ -104,6 +104,7 @@ void sh_bios_vbr_reload(void)
 		);
 }
 
+#ifdef CONFIG_EARLY_PRINTK
 /*
  *	Print a string through the BIOS
  */
@@ -144,8 +145,6 @@ static struct console bios_console = {
 	.index		= -1,
 };
 
-static struct console *early_console;
-
 static int __init setup_early_printk(char *buf)
 {
 	int keep_early = 0;
@@ -170,3 +169,4 @@ static int __init setup_early_printk(char *buf)
 	return 0;
 }
 early_param("earlyprintk", setup_early_printk);
+#endif
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 2062aa88af41..45696451f0ea 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -203,7 +203,7 @@ asmlinkage void __cpuinit start_secondary(void)
 	set_cpu_online(cpu, true);
 	per_cpu(cpu_state, cpu) = CPU_ONLINE;
 
-	cpu_idle();
+	cpu_startup_entry(CPUHP_ONLINE);
 }
 
 extern struct {
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 5a43a871e097..dba285e86808 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -137,13 +137,6 @@ config ARCH_SPARSEMEM_ENABLE
 config ARCH_SPARSEMEM_DEFAULT
 	def_bool y
 
-config MAX_ACTIVE_REGIONS
-	int
-	default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
-	default "2" if SPARSEMEM && (CPU_SUBTYPE_SH7722 || \
-		       CPU_SUBTYPE_SH7785)
-	default "1"
-
 config ARCH_SELECT_MEMORY_MODEL
 	def_bool y
 
diff --git a/arch/sh/mm/alignment.c b/arch/sh/mm/alignment.c
index aea14855e656..ec2b25302427 100644
--- a/arch/sh/mm/alignment.c
+++ b/arch/sh/mm/alignment.c
@@ -140,7 +140,7 @@ static int alignment_proc_open(struct inode *inode, struct file *file)
 static ssize_t alignment_proc_write(struct file *file,
 		const char __user *buffer, size_t count, loff_t *pos)
 {
-	int *data = PDE(file_inode(file))->data;
+	int *data = PDE_DATA(file_inode(file));
 	char mode;
 
 	if (count > 0) {
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 105794037143..20f9ead650d3 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -417,15 +417,13 @@ void __init mem_init(void)
 
 	for_each_online_node(nid) {
 		pg_data_t *pgdat = NODE_DATA(nid);
-		unsigned long node_pages = 0;
 		void *node_high_memory;
 
 		num_physpages += pgdat->node_present_pages;
 
 		if (pgdat->node_spanned_pages)
-			node_pages = free_all_bootmem_node(pgdat);
+			totalram_pages += free_all_bootmem_node(pgdat);
 
-		totalram_pages += node_pages;
 
 		node_high_memory = (void *)__va((pgdat->node_start_pfn +
 						 pgdat->node_spanned_pages) <<
@@ -501,31 +499,13 @@ void __init mem_init(void)
 
 void free_initmem(void)
 {
-	unsigned long addr;
-
-	addr = (unsigned long)(&__init_begin);
-	for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(addr));
-		init_page_count(virt_to_page(addr));
-		free_page(addr);
-		totalram_pages++;
-	}
-	printk("Freeing unused kernel memory: %ldk freed\n",
-	       ((unsigned long)&__init_end -
-	        (unsigned long)&__init_begin) >> 10);
+	free_initmem_default(0);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	unsigned long p;
-	for (p = start; p < end; p += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(p));
-		init_page_count(virt_to_page(p));
-		free_page(p);
-		totalram_pages++;
-	}
-	printk("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+	free_reserved_area(start, end, 0, "initrd");
 }
 #endif