Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (34 commits)
  [MIPS] tb0219: Update copyright message.
  [MIPS] MT: Fix bug in multithreaded kernels.
  [MIPS] Alchemy: Remove CONFIG_TS_AU1X00_ADS7846 from defconfigs.
  Author: Ralf Baechle <ralf@linux-mips.org>
  [MIPS] sb1250: Enable GenBus IDE in defconfig.
  [MIPS] vmlinux.ld.S: correctly indent .data section
  [MIPS] c-r3k: Implement flush_cache_range()
  [MIPS] Store sign-extend register values for PTRACE_GETREGS
  [MIPS] Alchemy: Register platform devices
  [MIPS] Add len and addr validation for MAP_FIXED mappings.
  [MIPS] IRIX: Fix off-by-one error in signal compat code.
  [MIPS] time: Replace plat_timer_setup with modern APIs.
  [MIPS] time: Fix cut'n'paste bug in Sibyte clockevent driver.
  [MIPS] time: Make c0_compare_int_usable faster
  [MIPS] time: Fix cevt-r4k.c for 64-bit kernel
  [MIPS] Sibyte: Delete {sb1250,bcm1480}_steal_irq().
  [MIPS] txx9tmr clockevent/clocksource driver
  [MIPS] Add mips_hpt_frequency check to mips_clockevent_init().
  [MIPS] IP32: Fixes after interrupt renumbering.
  [MIPS] IP27: Fix slice logic to work for arbitrary number of slices.
  ...

48 files changed, 697 insertions, 463 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 61262c5f9c6..97da953eb5d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -583,6 +583,7 @@ config SNI_RM
 
 config TOSHIBA_JMR3927
 	bool "Toshiba JMR-TX3927 board"
+	select CEVT_TXX9
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select MIPS_TX3927
@@ -597,6 +598,7 @@ config TOSHIBA_JMR3927
 config TOSHIBA_RBTX4927
 	bool "Toshiba RBTX49[23]7 board"
 	select CEVT_R4K
+	select CEVT_TXX9
 	select DMA_NONCOHERENT
 	select HAS_TXX9_SERIAL
 	select HW_HAS_PCI
@@ -618,6 +620,7 @@ config TOSHIBA_RBTX4927
 config TOSHIBA_RBTX4938
 	bool "Toshiba RBTX4938 board"
 	select CEVT_R4K
+	select CEVT_TXX9
 	select DMA_NONCOHERENT
 	select HAS_TXX9_SERIAL
 	select HW_HAS_PCI
@@ -736,6 +739,9 @@ config CEVT_GT641XX
 config CEVT_R4K
 	bool
 
+config CEVT_TXX9
+	bool
+
 config CFE
 	bool
 
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index 59e932a928d..ddfb7f0a17a 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -318,38 +318,6 @@ static struct irq_chip level_irq_type = {
 	.end		= end_irq,
 };
 
-#ifdef CONFIG_PM
-void startup_match20_interrupt(irq_handler_t handler)
-{
-	struct irq_desc *desc = &irq_desc[AU1000_TOY_MATCH2_INT];
-
-	static struct irqaction action;
-	memset(&action, 0, sizeof(struct irqaction));
-
-	/*
-	 * This is a big problem.... since we didn't use request_irq
-	 * when kernel/irq.c calls probe_irq_xxx this interrupt will
-	 * be probed for usage. This will end up disabling the device :(
-	 * Give it a bogus "action" pointer -- this will keep it from
-	 * getting auto-probed!
-	 *
-	 * By setting the status to match that of request_irq() we
-	 * can avoid it.  --cgray
-	*/
-	action.dev_id = handler;
-	action.flags = IRQF_DISABLED;
-	cpus_clear(action.mask);
-	action.name = "Au1xxx TOY";
-	action.handler = handler;
-	action.next = NULL;
-
-	desc->action = &action;
-	desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING | IRQ_INPROGRESS);
-
-	local_enable_irq(AU1000_TOY_MATCH2_INT);
-}
-#endif
-
 static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
 {
 	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
diff --git a/arch/mips/au1000/common/time.c b/arch/mips/au1000/common/time.c
index 2556399708b..f113b512d7b 100644
--- a/arch/mips/au1000/common/time.c
+++ b/arch/mips/au1000/common/time.c
@@ -67,7 +67,7 @@ static DEFINE_SPINLOCK(time_lock);
 unsigned long wtimer;
 
 #ifdef CONFIG_PM
-irqreturn_t counter0_irq(int irq, void *dev_id)
+static irqreturn_t counter0_irq(int irq, void *dev_id)
 {
 	unsigned long pc0;
 	int time_elapsed;
@@ -117,6 +117,13 @@ irqreturn_t counter0_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+struct irqaction counter0_action = {
+	.handler	= counter0_irq,
+	.flags		= IRQF_DISABLED,
+	.name		= "alchemy-toy",
+	.dev_id		= NULL,
+};
+
 /* When we wakeup from sleep, we have to "catch up" on all of the
  * timer ticks we have missed.
  */
@@ -221,7 +228,7 @@ unsigned long cal_r4koff(void)
 	return (cpu_speed / HZ);
 }
 
-void __init plat_timer_setup(struct irqaction *irq)
+void __init plat_time_init(void)
 {
 	unsigned int est_freq;
 
@@ -255,15 +262,10 @@ void __init plat_timer_setup(struct irqaction *irq)
 	 * we do this.
 	 */
 	if (no_au1xxx_32khz) {
-		unsigned int c0_status;
-
 		printk("WARNING: no 32KHz clock found.\n");
 
-		/* Ensure we get CPO_COUNTER interrupts.
-		*/
-		c0_status = read_c0_status();
-		c0_status |= IE_IRQ5;
-		write_c0_status(c0_status);
+		/* Ensure we get CPO_COUNTER interrupts.  */
+		set_c0_status(IE_IRQ5);
 	}
 	else {
 		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S);
@@ -280,7 +282,7 @@ void __init plat_timer_setup(struct irqaction *irq)
 		au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
 		au_sync();
 		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
-		startup_match20_interrupt(counter0_irq);
+		setup_irq(AU1000_TOY_MATCH2_INT, &counter0_action);
 
 		/* We can use the real 'wait' instruction.
 		*/
diff --git a/arch/mips/au1000/mtx-1/Makefile b/arch/mips/au1000/mtx-1/Makefile
index 764bf9f7e28..afa7007d67f 100644
--- a/arch/mips/au1000/mtx-1/Makefile
+++ b/arch/mips/au1000/mtx-1/Makefile
@@ -8,3 +8,4 @@
 #
 
 lib-y := init.o board_setup.o irqmap.o
+obj-y := platform.o
diff --git a/arch/mips/au1000/mtx-1/platform.c b/arch/mips/au1000/mtx-1/platform.c
new file mode 100644
index 00000000000..01ebff67797
--- /dev/null
+++ b/arch/mips/au1000/mtx-1/platform.c
@@ -0,0 +1,86 @@
+/*
+ * MTX-1 platform devices registration
+ *
+ * Copyright (C) 2007, Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+#include <asm/gpio.h>
+
+static struct resource mtx1_wdt_res[] = {
+	[0] = {
+		.start	= 15,
+		.end	= 15,
+		.name	= "mtx1-wdt-gpio",
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct resource mtx1_sys_btn[] = {
+	[0] = {
+		.start	= 7,
+		.end	= 7,
+		.name	= "mtx1-sys-btn-gpio",
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device mtx1_wdt = {
+	.name = "mtx1-wdt",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(mtx1_wdt_res),
+	.resource = mtx1_wdt_res,
+};
+
+static struct gpio_led default_leds[] = {
+	{
+		.name	= "mtx1:green",
+		.gpio = 211,
+	}, {
+		.name = "mtx1:red",
+		.gpio = 212,
+	},
+};
+
+static struct gpio_led_platform_data mtx1_led_data = {
+	.num_leds = ARRAY_SIZE(default_leds),
+	.leds = default_leds,
+};
+
+static struct platform_device mtx1_gpio_leds = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = &mtx1_led_data,
+	}
+};
+
+static struct __initdata platform_device * mtx1_devs[] = {
+	&mtx1_gpio_leds,
+	&mtx1_wdt
+};
+
+static int __init mtx1_register_devices(void)
+{
+	return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
+}
+
+arch_initcall(mtx1_register_devices);
diff --git a/arch/mips/basler/excite/excite_setup.c b/arch/mips/basler/excite/excite_setup.c
index 404ca9284b3..24378b9223f 100644
--- a/arch/mips/basler/excite/excite_setup.c
+++ b/arch/mips/basler/excite/excite_setup.c
@@ -68,24 +68,23 @@ DEFINE_SPINLOCK(titan_lock);
 int titan_irqflags;
 
 
+/*
+ * The eXcite platform uses the alternate timer interrupt
+ *
+ * Fixme: At the time of this writing cevt-r4k.c doesn't yet know about how
+ * to handle the alternate timer interrupt of the RM9000.
+ */
 void __init plat_time_init(void)
 {
 	const u32 modebit5 = ocd_readl(0x00e4);
-	unsigned int
-		mult = ((modebit5 >> 11) & 0x1f) + 2,
-		div = ((modebit5 >> 16) & 0x1f) + 2;
+	unsigned int mult = ((modebit5 >> 11) & 0x1f) + 2,
+	unsigned int div = ((modebit5 >> 16) & 0x1f) + 2;
 
-	if (div == 33) div = 1;
+	if (div == 33)
+		div = 1;
 	mips_hpt_frequency = EXCITE_CPU_EXT_CLOCK * mult / div / 2;
 }
 
-void __init plat_timer_setup(struct irqaction *irq)
-{
-	/* The eXcite platform uses the alternate timer interrupt */
-	set_c0_intcontrol(0x80);
-	setup_irq(TIMER_IRQ, irq);
-}
-
 static int __init excite_init_console(void)
 {
 #if defined(CONFIG_SERIAL_8250)
diff --git a/arch/mips/configs/db1000_defconfig b/arch/mips/configs/db1000_defconfig
index 885b633647e..5a8b7acb7dd 100644
--- a/arch/mips/configs/db1000_defconfig
+++ b/arch/mips/configs/db1000_defconfig
@@ -738,7 +738,6 @@ CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/db1100_defconfig b/arch/mips/configs/db1100_defconfig
index e3c3a07e8a7..d4ed90bca26 100644
--- a/arch/mips/configs/db1100_defconfig
+++ b/arch/mips/configs/db1100_defconfig
@@ -714,7 +714,6 @@ CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/db1200_defconfig b/arch/mips/configs/db1200_defconfig
index 9aa7c3ebfa3..a055657e698 100644
--- a/arch/mips/configs/db1200_defconfig
+++ b/arch/mips/configs/db1200_defconfig
@@ -775,7 +775,6 @@ CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/db1500_defconfig b/arch/mips/configs/db1500_defconfig
index 99240668bca..0ad08cf446e 100644
--- a/arch/mips/configs/db1500_defconfig
+++ b/arch/mips/configs/db1500_defconfig
@@ -811,7 +811,6 @@ CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/db1550_defconfig b/arch/mips/configs/db1550_defconfig
index 19992f76c60..057c7d429c8 100644
--- a/arch/mips/configs/db1550_defconfig
+++ b/arch/mips/configs/db1550_defconfig
@@ -856,7 +856,6 @@ CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/pb1100_defconfig b/arch/mips/configs/pb1100_defconfig
index d53fa8f8e09..703d28db05b 100644
--- a/arch/mips/configs/pb1100_defconfig
+++ b/arch/mips/configs/pb1100_defconfig
@@ -731,7 +731,6 @@ CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/pb1500_defconfig b/arch/mips/configs/pb1500_defconfig
index dc4aa0c6684..82f0c5cee0d 100644
--- a/arch/mips/configs/pb1500_defconfig
+++ b/arch/mips/configs/pb1500_defconfig
@@ -849,7 +849,6 @@ CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/pb1550_defconfig b/arch/mips/configs/pb1550_defconfig
index 24428e13002..147a4fc7fdd 100644
--- a/arch/mips/configs/pb1550_defconfig
+++ b/arch/mips/configs/pb1550_defconfig
@@ -842,7 +842,6 @@ CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_AU1X00_GPIO is not set
-# CONFIG_TS_AU1X00_ADS7846 is not set
 
 #
 # Serial drivers
diff --git a/arch/mips/configs/sb1250-swarm_defconfig b/arch/mips/configs/sb1250-swarm_defconfig
index 49dfcef2518..c2798229cbf 100644
--- a/arch/mips/configs/sb1250-swarm_defconfig
+++ b/arch/mips/configs/sb1250-swarm_defconfig
@@ -468,7 +468,7 @@ CONFIG_BLK_DEV_IDEFLOPPY=y
 #
 CONFIG_IDE_GENERIC=y
 # CONFIG_BLK_DEV_IDEPCI is not set
-# CONFIG_BLK_DEV_IDE_SWARM is not set
+CONFIG_BLK_DEV_IDE_SWARM=y
 # CONFIG_IDE_ARM is not set
 # CONFIG_BLK_DEV_IDEDMA is not set
 # CONFIG_IDEDMA_AUTO is not set
diff --git a/arch/mips/gt64120/wrppmc/time.c b/arch/mips/gt64120/wrppmc/time.c
index b207e7f1417..668dbd5f12c 100644
--- a/arch/mips/gt64120/wrppmc/time.c
+++ b/arch/mips/gt64120/wrppmc/time.c
@@ -19,12 +19,6 @@
 
 #define WRPPMC_CPU_CLK_FREQ 40000000 /* 40MHZ */
 
-void __init plat_timer_setup(struct irqaction *irq)
-{
-	/* Install ISR for timer interrupt */
-	setup_irq(WRPPMC_MIPS_TIMER_IRQ, irq);
-}
-
 /*
  * Estimate CPU frequency.  Sets mips_hpt_frequency as a side-effect
  *
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
index edb9e59248e..06e01c8f4e3 100644
--- a/arch/mips/jmr3927/rbhma3100/setup.c
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -27,17 +27,13 @@
  * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
  */
 
-#include <linux/clockchips.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/kdev_t.h>
 #include <linux/types.h>
-#include <linux/sched.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
-#include <linux/irq.h>
 #include <linux/ioport.h>
-#include <linux/param.h>	/* for HZ */
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
@@ -48,17 +44,13 @@
 #endif
 
 #include <asm/addrspace.h>
-#include <asm/time.h>
+#include <asm/txx9tmr.h>
 #include <asm/reboot.h>
 #include <asm/jmr3927/jmr3927.h>
 #include <asm/mipsregs.h>
 
 extern void puts(const char *cp);
 
-/* Tick Timer divider */
-#define JMR3927_TIMER_CCD	0	/* 1/2 */
-#define JMR3927_TIMER_CLK	(JMR3927_IMCLK / (2 << JMR3927_TIMER_CCD))
-
 /* don't enable - see errata */
 static int jmr3927_ccfg_toeon;
 
@@ -93,66 +85,12 @@ static void jmr3927_machine_power_off(void)
 	while (1);
 }
 
-static cycle_t jmr3927_hpt_read(void)
-{
-	/* We assume this function is called xtime_lock held. */
-	return jiffies * (JMR3927_TIMER_CLK / HZ) + jmr3927_tmrptr->trr;
-}
-
-static void jmr3927_set_mode(enum clock_event_mode mode,
-	struct clock_event_device *evt)
-{
-	/* Nothing to do here */
-}
-
-struct clock_event_device jmr3927_clock_event_device = {
-	.name		= "MIPS",
-	.features	= CLOCK_EVT_FEAT_PERIODIC,
-	.shift		= 32,
-	.rating		= 300,
-	.cpumask	= CPU_MASK_CPU0,
-	.irq		= JMR3927_IRQ_TICK,
-	.set_mode	= jmr3927_set_mode,
-};
-
-static irqreturn_t jmr3927_timer_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *cd = &jmr3927_clock_event_device;
-
-	jmr3927_tmrptr->tisr = 0;       /* ack interrupt */
-
-	cd->event_handler(cd);
-
-	return IRQ_HANDLED;
-}
-
-static struct irqaction jmr3927_timer_irqaction = {
-	.handler	= jmr3927_timer_interrupt,
-	.flags		= IRQF_DISABLED | IRQF_PERCPU,
-	.name		= "jmr3927-timer",
-};
-
 void __init plat_time_init(void)
 {
-	struct clock_event_device *cd;
-
-	clocksource_mips.read = jmr3927_hpt_read;
-	mips_hpt_frequency = JMR3927_TIMER_CLK;
-
-	jmr3927_tmrptr->cpra = JMR3927_TIMER_CLK / HZ;
-	jmr3927_tmrptr->itmr = TXx927_TMTITMR_TIIE | TXx927_TMTITMR_TZCE;
-	jmr3927_tmrptr->ccdr = JMR3927_TIMER_CCD;
-	jmr3927_tmrptr->tcr =
-		TXx927_TMTCR_TCE | TXx927_TMTCR_CCDE | TXx927_TMTCR_TMODE_ITVL;
-
-	cd = &jmr3927_clock_event_device;
-	/* Calculate the min / max delta */
-	cd->mult = div_sc((unsigned long) JMR3927_IMCLK, NSEC_PER_SEC, 32);
-	cd->max_delta_ns	= clockevent_delta2ns(0x7fffffff, cd);
-	cd->min_delta_ns	= clockevent_delta2ns(0x300, cd);
-	clockevents_register_device(cd);
-
-	setup_irq(JMR3927_IRQ_TICK, &jmr3927_timer_irqaction);
+	txx9_clockevent_init(TX3927_TMR_REG(0),
+			     TXX9_IRQ_BASE + JMR3927_IRQ_IRC_TMR(0),
+			     JMR3927_IMCLK);
+	txx9_clocksource_init(TX3927_TMR_REG(1), JMR3927_IMCLK);
 }
 
 #define DO_WRITE_THROUGH
@@ -317,15 +255,8 @@ static void __init tx3927_setup(void)
 	       tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
 
 	/* TMR */
-	/* disable all timers */
-	for (i = 0; i < TX3927_NR_TMR; i++) {
-		tx3927_tmrptr(i)->tcr = TXx927_TMTCR_CRE;
-		tx3927_tmrptr(i)->tisr = 0;
-		tx3927_tmrptr(i)->cpra = 0xffffffff;
-		tx3927_tmrptr(i)->itmr = 0;
-		tx3927_tmrptr(i)->ccdr = 0;
-		tx3927_tmrptr(i)->pgmr = 0;
-	}
+	for (i = 0; i < TX3927_NR_TMR; i++)
+		txx9_tmr_init(TX3927_TMR_REG(i));
 
 	/* DMA */
 	tx3927_dmaptr->mcr = 0;
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index d7745c8976f..3196509a28d 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -10,6 +10,7 @@ obj-y		+= cpu-probe.o branch.o entry.o genex.o irq.o process.o \
 
 obj-$(CONFIG_CEVT_R4K)		+= cevt-r4k.o
 obj-$(CONFIG_CEVT_GT641XX)	+= cevt-gt641xx.o
+obj-$(CONFIG_CEVT_TXX9)		+= cevt-txx9.o
 
 binfmt_irix-objs	:= irixelf.o irixinv.o irixioctl.o irixsig.o	\
 			   irix5sys.o sysirix.o
diff --git a/arch/mips/kernel/cevt-gt641xx.c b/arch/mips/kernel/cevt-gt641xx.c
index 4c651b2680f..c36772631fe 100644
--- a/arch/mips/kernel/cevt-gt641xx.c
+++ b/arch/mips/kernel/cevt-gt641xx.c
@@ -49,10 +49,9 @@ int gt641xx_timer0_state(void)
 static int gt641xx_timer0_set_next_event(unsigned long delta,
 					 struct clock_event_device *evt)
 {
-	unsigned long flags;
 	u32 ctrl;
 
-	spin_lock_irqsave(&gt641xx_timer_lock, flags);
+	spin_lock(&gt641xx_timer_lock);
 
 	ctrl = GT_READ(GT_TC_CONTROL_OFS);
 	ctrl &= ~(GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
@@ -61,7 +60,7 @@ static int gt641xx_timer0_set_next_event(unsigned long delta,
 	GT_WRITE(GT_TC0_OFS, delta);
 	GT_WRITE(GT_TC_CONTROL_OFS, ctrl);
 
-	spin_unlock_irqrestore(&gt641xx_timer_lock, flags);
+	spin_unlock(&gt641xx_timer_lock);
 
 	return 0;
 }
@@ -69,10 +68,9 @@ static int gt641xx_timer0_set_next_event(unsigned long delta,
 static void gt641xx_timer0_set_mode(enum clock_event_mode mode,
 				    struct clock_event_device *evt)
 {
-	unsigned long flags;
 	u32 ctrl;
 
-	spin_lock_irqsave(&gt641xx_timer_lock, flags);
+	spin_lock(&gt641xx_timer_lock);
 
 	ctrl = GT_READ(GT_TC_CONTROL_OFS);
 	ctrl &= ~(GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
@@ -90,7 +88,7 @@ static void gt641xx_timer0_set_mode(enum clock_event_mode mode,
 
 	GT_WRITE(GT_TC_CONTROL_OFS, ctrl);
 
-	spin_unlock_irqrestore(&gt641xx_timer_lock, flags);
+	spin_unlock(&gt641xx_timer_lock);
 }
 
 static void gt641xx_timer0_event_handler(struct clock_event_device *dev)
@@ -133,9 +131,9 @@ static int __init gt641xx_timer0_clockevent_init(void)
 
 	cd = &gt641xx_timer0_clockevent;
 	cd->rating = 200 + gt641xx_base_clock / 10000000;
+	clockevent_set_clock(cd, gt641xx_base_clock);
 	cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
 	cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
-	clockevent_set_clock(cd, gt641xx_base_clock);
 
 	clockevents_register_device(&gt641xx_timer0_clockevent);
 
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index ae2984fff58..bab935a3d74 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -28,7 +28,7 @@ static int mips_next_event(unsigned long delta,
 	cnt = read_c0_count();
 	cnt += delta;
 	write_c0_compare(cnt);
-	res = ((long)(read_c0_count() - cnt ) > 0) ? -ETIME : 0;
+	res = ((int)(read_c0_count() - cnt) > 0) ? -ETIME : 0;
 #ifdef CONFIG_MIPS_MT_SMTC
 	evpe(vpflags);
 	local_irq_restore(flags);
@@ -179,7 +179,7 @@ static int c0_compare_int_pending(void)
 
 static int c0_compare_int_usable(void)
 {
-	const unsigned int delta = 0x300000;
+	unsigned int delta;
 	unsigned int cnt;
 
 	/*
@@ -192,11 +192,17 @@ static int c0_compare_int_usable(void)
 			return 0;
 	}
 
-	cnt = read_c0_count();
-	cnt += delta;
-	write_c0_compare(cnt);
+	for (delta = 0x10; delta <= 0x400000; delta <<= 1) {
+		cnt = read_c0_count();
+		cnt += delta;
+		write_c0_compare(cnt);
+		irq_disable_hazard();
+		if ((int)(read_c0_count() - cnt) < 0)
+		    break;
+		/* increase delta if the timer was already expired */
+	}
 
-	while ((long)(read_c0_count() - cnt) <= 0)
+	while ((int)(re