Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits)
  [PARISC] Use symbolic last syscall in __NR_Linux_syscalls
  [PARISC] Add missing statfs64 and fstatfs64 syscalls
  Revert "[PARISC] Optimize TLB flush on SMP systems"
  [PARISC] Compat signal fixes for 64-bit parisc
  [PARISC] Reorder syscalls to match unistd.h
  Revert "[PATCH] make kernel/signal.c:kill_proc_info() static"
  [PARISC] fix sys_rt_sigqueueinfo
  [PARISC] fix section mismatch warnings in harmony sound driver
  [PARISC] do not export get_register/set_register
  [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code
  [PARISC] convert to use CONFIG_64BIT instead of __LP64__
  [PARISC] use CONFIG_64BIT instead of __LP64__
  [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro
  [PARISC] more ENTRY(), ENDPROC(), END() conversions
  [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc
  [PARISC] Fixes /proc/cpuinfo cache output on B160L
  [PARISC] implement standard ENTRY(), END() and ENDPROC()
  [PARISC] kill ENTRY_SYS_CPUS
  [PARISC] clean up debugging printks in smp.c
  [PARISC] factor syscall_restart code out of do_signal
  ...

Fix conflict in include/linux/sched.h due to kill_proc_info() being made
publicly available to PARISC again.

6 files changed, 154 insertions, 171 deletions

diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c
index 07dc2b6d4e9..9bb4db552f3 100644
--- a/drivers/parisc/hppb.c
+++ b/drivers/parisc/hppb.c
@@ -10,10 +10,6 @@
 ** the Free Software Foundation; either version 2 of the License, or
 ** (at your option) any later version.
 **
-** This Driver currently only supports the console (port 0) on the MUX.
-** Additional work will be needed on this driver to enable the full
-** functionality of the MUX.
-**
 */
 
 #include <linux/types.h>
@@ -67,7 +63,7 @@ static int hppb_probe(struct parisc_device *dev)
 		}
 		card = card->next;
 	}
-        printk(KERN_INFO "Found GeckoBoa at 0x%lx\n", dev->hpa.start);
+        printk(KERN_INFO "Found GeckoBoa at 0x%x\n", dev->hpa.start);
 
 	card->hpa = dev->hpa.start;
 	card->mmio_region.name = "HP-PB Bus";
@@ -78,16 +74,18 @@ static int hppb_probe(struct parisc_device *dev)
 
 	status = ccio_request_resource(dev, &card->mmio_region);
 	if(status < 0) {
-		printk(KERN_ERR "%s: failed to claim HP-PB bus space (%08lx, %08lx)\n",
+		printk(KERN_ERR "%s: failed to claim HP-PB bus space (%08x, %08x)\n",
 			__FILE__, card->mmio_region.start, card->mmio_region.end);
 	}
 
         return 0;
 }
 
-
 static struct parisc_device_id hppb_tbl[] = {
-        { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, 
+        { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */
+        { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */
+        { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */
+        { HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */
         { 0, }
 };
 
diff --git a/drivers/parisc/iosapic_private.h b/drivers/parisc/iosapic_private.h
index 41e7ec2a44a..6e05e30a245 100644
--- a/drivers/parisc/iosapic_private.h
+++ b/drivers/parisc/iosapic_private.h
@@ -132,7 +132,7 @@ struct iosapic_irt {
 struct vector_info {
 	struct iosapic_info *iosapic;	/* I/O SAPIC this vector is on */
 	struct irt_entry *irte;		/* IRT entry */
-	u32	*eoi_addr;		/* precalculate EOI reg address */
+	u32 __iomem *eoi_addr;		/* precalculate EOI reg address */
 	u32	eoi_data;		/* IA64: ?       PA: swapped txn_data */
 	int	txn_irq;		/* virtual IRQ number for processor */
 	ulong	txn_addr;		/* IA64: id_eid  PA: partial HPA */
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index ba6769934c7..21c4c299b3d 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -168,7 +168,8 @@ lba_dump_res(struct resource *r, int d)
 
 	printk(KERN_DEBUG "(%p)", r->parent);
 	for (i = d; i ; --i) printk(" ");
-	printk(KERN_DEBUG "%p [%lx,%lx]/%lx\n", r, r->start, r->end, r->flags);
+	printk(KERN_DEBUG "%p [%lx,%lx]/%lx\n", r,
+		(long)r->start, (long)r->end, r->flags);
 	lba_dump_res(r->child, d+2);
 	lba_dump_res(r->sibling, d);
 }
@@ -647,7 +648,7 @@ truncate_pat_collision(struct resource *root, struct resource *new)
 	printk(KERN_WARNING "LBA: Truncating lmmio_space [%lx/%lx] "
 					"to [%lx,%lx]\n",
 			start, end,
-			new->start, new->end );
+			(long)new->start, (long)new->end );
 
 	return 0;	/* truncation successful */
 }
@@ -715,8 +716,8 @@ lba_fixup_bus(struct pci_bus *bus)
 
 				printk("FAILED: lba_fixup_bus() request for "
 						"elmmio_space [%lx/%lx]\n",
-						ldev->hba.elmmio_space.start,
-						ldev->hba.elmmio_space.end);
+						(long)ldev->hba.elmmio_space.start,
+						(long)ldev->hba.elmmio_space.end);
 
 				/* lba_dump_res(&iomem_resource, 2); */
 				/* BUG(); */
@@ -738,15 +739,15 @@ lba_fixup_bus(struct pci_bus *bus)
 				       	&(ldev->hba.lmmio_space))) {
 
 			printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n",
-					ldev->hba.lmmio_space.start,
-					ldev->hba.lmmio_space.end);
+					(long)ldev->hba.lmmio_space.start,
+					(long)ldev->hba.lmmio_space.end);
 		} else {
 			err = request_resource(&iomem_resource, &(ldev->hba.lmmio_space));
 			if (err < 0) {
 				printk(KERN_ERR "FAILED: lba_fixup_bus() request for "
 					"lmmio_space [%lx/%lx]\n",
-					ldev->hba.lmmio_space.start,
-					ldev->hba.lmmio_space.end);
+					(long)ldev->hba.lmmio_space.start,
+					(long)ldev->hba.lmmio_space.end);
 			} else
 				bus->resource[i++] = &(ldev->hba.lmmio_space);
 		}
@@ -758,8 +759,8 @@ lba_fixup_bus(struct pci_bus *bus)
 			if (err < 0) {
 				printk("FAILED: lba_fixup_bus() request for "
 					"gmmio_space [%lx/%lx]\n",
-					ldev->hba.gmmio_space.start,
-					ldev->hba.gmmio_space.end);
+					(long)ldev->hba.gmmio_space.start,
+					(long)ldev->hba.gmmio_space.end);
 				lba_dump_res(&iomem_resource, 2);
 				BUG();
 			}
@@ -980,7 +981,7 @@ LBA_PORT_IN(32, 0)
 #define LBA_PORT_OUT(size, mask) \
 static void lba_pat_out##size (struct pci_hba_data *l, u16 addr, u##size val) \
 { \
-	void *where = (void *) PIOP_TO_GMMIO(LBA_DEV(l), addr); \
+	void __iomem *where = PIOP_TO_GMMIO(LBA_DEV(l), addr); \
 	DBG_PORT("%s(0x%p, 0x%x, 0x%x)\n", __FUNCTION__, l, addr, val); \
 	WRITE_REG##size(val, where); \
 	/* flush the I/O down to the elroy at least */ \
@@ -1063,16 +1064,16 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 			/* used to fix up pre-initialized MEM BARs */
 			if (!lba_dev->hba.lmmio_space.start) {
 				sprintf(lba_dev->hba.lmmio_name,
-						"PCI%02lx LMMIO",
-						lba_dev->hba.bus_num.start);
+						"PCI%02x LMMIO",
+						(int)lba_dev->hba.bus_num.start);
 				lba_dev->hba.lmmio_space_offset = p->start -
 					io->start;
 				r = &lba_dev->hba.lmmio_space;
 				r->name = lba_dev->hba.lmmio_name;
 			} else if (!lba_dev->hba.elmmio_space.start) {
 				sprintf(lba_dev->hba.elmmio_name,
-						"PCI%02lx ELMMIO",
-						lba_dev->hba.bus_num.start);
+						"PCI%02x ELMMIO",
+						(int)lba_dev->hba.bus_num.start);
 				r = &lba_dev->hba.elmmio_space;
 				r->name = lba_dev->hba.elmmio_name;
 			} else {
@@ -1089,8 +1090,8 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 
 		case PAT_GMMIO:
 			/* MMIO space > 4GB phys addr; for 64-bit BAR */
-			sprintf(lba_dev->hba.gmmio_name, "PCI%02lx GMMIO",
-					lba_dev->hba.bus_num.start);
+			sprintf(lba_dev->hba.gmmio_name, "PCI%02x GMMIO",
+					(int)lba_dev->hba.bus_num.start);
 			r = &lba_dev->hba.gmmio_space;
 			r->name  = lba_dev->hba.gmmio_name;
 			r->start  = p->start;
@@ -1112,8 +1113,8 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 			*/
 			lba_dev->iop_base = ioremap_nocache(p->start, 64 * 1024 * 1024);
 
-			sprintf(lba_dev->hba.io_name, "PCI%02lx Ports",
-					lba_dev->hba.bus_num.start);
+			sprintf(lba_dev->hba.io_name, "PCI%02x Ports",
+					(int)lba_dev->hba.bus_num.start);
 			r = &lba_dev->hba.io_space;
 			r->name  = lba_dev->hba.io_name;
 			r->start  = HBA_PORT_BASE(lba_dev->hba.hba_num);
@@ -1166,8 +1167,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 	** Legacy boxes but it's nice to see in /proc/iomem.
 	*/
 	r = &(lba_dev->hba.lmmio_space);
-	sprintf(lba_dev->hba.lmmio_name, "PCI%02lx LMMIO",
-					lba_dev->hba.bus_num.start);
+	sprintf(lba_dev->hba.lmmio_name, "PCI%02x LMMIO",
+					(int)lba_dev->hba.bus_num.start);
 	r->name  = lba_dev->hba.lmmio_name;
 
 #if 1
@@ -1275,8 +1276,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 	** an existing (but unused portion of) distributed range.
 	*/
 	r = &(lba_dev->hba.elmmio_space);
-	sprintf(lba_dev->hba.elmmio_name, "PCI%02lx ELMMIO",
-					lba_dev->hba.bus_num.start);
+	sprintf(lba_dev->hba.elmmio_name, "PCI%02x ELMMIO",
+					(int)lba_dev->hba.bus_num.start);
 	r->name  = lba_dev->hba.elmmio_name;
 
 #if 1
@@ -1297,8 +1298,8 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
 #endif
 
 	r = &(lba_dev->hba.io_space);
-	sprintf(lba_dev->hba.io_name, "PCI%02lx Ports",
-					lba_dev->hba.bus_num.start);
+	sprintf(lba_dev->hba.io_name, "PCI%02x Ports",
+					(int)lba_dev->hba.bus_num.start);
 	r->name  = lba_dev->hba.io_name;
 	r->flags = IORESOURCE_IO;
 	r->start = READ_REG32(lba_dev->hba.base_addr + LBA_IOS_BASE) & ~1L;
@@ -1406,13 +1407,20 @@ lba_hw_init(struct lba_device *d)
 	return 0;
 }
 
-
+/*
+ * Unfortunately, when firmware numbers busses, it doesn't take into account
+ * Cardbus bridges.  So we have to renumber the busses to suit ourselves.
+ * Elroy/Mercury don't actually know what bus number they're attached to;
+ * we use bus 0 to indicate the directly attached bus and any other bus
+ * number will be taken care of by the PCI-PCI bridge.
+ */
+static unsigned int lba_next_bus = 0;
 
 /*
-** Determine if lba should claim this chip (return 0) or not (return 1).
-** If so, initialize the chip and tell other partners in crime they
-** have work to do.
-*/
+ * Determine if lba should claim this chip (return 0) or not (return 1).
+ * If so, initialize the chip and tell other partners in crime they
+ * have work to do.
+ */
 static int __init
 lba_driver_probe(struct parisc_device *dev)
 {
@@ -1440,7 +1448,7 @@ lba_driver_probe(struct parisc_device *dev)
 		}
 
 		printk(KERN_INFO "Elroy version %s (0x%x) found at 0x%lx\n",
-		       version, func_class & 0xf, dev->hpa.start);
+		       version, func_class & 0xf, (long)dev->hpa.start);
 
 		if (func_class < 2) {
 			printk(KERN_WARNING "Can't support LBA older than "
@@ -1470,17 +1478,16 @@ lba_driver_probe(struct parisc_device *dev)
                  */ 
 		printk(KERN_INFO "%s version TR%d.%d (0x%x) found at 0x%lx\n",
 		       IS_MERCURY(dev) ? "Mercury" : "Quicksilver", major,
-		       minor, func_class, dev->hpa.start);
+		       minor, func_class, (long)dev->hpa.start);
 
 		cfg_ops = &mercury_cfg_ops;
 	} else {
-		printk(KERN_ERR "Unknown LBA found at 0x%lx\n", dev->hpa.start);
+		printk(KERN_ERR "Unknown LBA found at 0x%lx\n",
+			(long)dev->hpa.start);
 		return -ENODEV;
 	}
 
-	/*
-	** Tell I/O SAPIC driver we have a IRQ handler/region.
-	*/
+	/* Tell I/O SAPIC driver we have a IRQ handler/region. */
 	tmp_obj = iosapic_register(dev->hpa.start + LBA_IOSAPIC_BASE);
 
 	/* NOTE: PCI devices (e.g. 103c:1005 graphics card) which don't
@@ -1529,16 +1536,17 @@ lba_driver_probe(struct parisc_device *dev)
 		lba_legacy_resources(dev, lba_dev);
 	}
 
-	/* 
-	** Tell PCI support another PCI bus was found.
-	** Walks PCI bus for us too.
-	*/
+	if (lba_dev->hba.bus_num.start < lba_next_bus)
+		lba_dev->hba.bus_num.start = lba_next_bus;
+
 	dev->dev.platform_data = lba_dev;
 	lba_bus = lba_dev->hba.hba_bus =
 		pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
 				cfg_ops, NULL);
-	if (lba_bus)
+	if (lba_bus) {
+		lba_next_bus = lba_bus->subordinate + 1;
 		pci_bus_add_devices(lba_bus);
+	}
 
 	/* This is in lieu of calling pci_assign_unassigned_resources() */
 	if (is_pdc_pat()) {
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 9a731c101d1..d190c05d87e 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -66,8 +66,8 @@ static char lcd_text_default[32]  __read_mostly;
 
 
 static struct workqueue_struct *led_wq;
-static void led_work_func(void *);
-static DECLARE_WORK(led_task, led_work_func, NULL);
+static void led_work_func(struct work_struct *);
+static DECLARE_DELAYED_WORK(led_task, led_work_func);
 
 #if 0
 #define DPRINTK(x)	printk x
@@ -136,7 +136,7 @@ static int start_task(void)
 
 	/* Create the work queue and queue the LED task */
 	led_wq = create_singlethread_workqueue("led_wq");	
-	queue_work(led_wq, &led_task);
+	queue_delayed_work(led_wq, &led_task, 0);
 
 	return 0;
 }
@@ -441,7 +441,7 @@ static __inline__ int led_get_diskio_activity(void)
 
 #define LED_UPDATE_INTERVAL (1 + (HZ*19/1000))
 
-static void led_work_func (void *unused)
+static void led_work_func (struct work_struct *unused)
 {
 	static unsigned long last_jiffies;
 	static unsigned long count_HZ; /* counter in range 0..HZ */
@@ -588,7 +588,7 @@ int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long d
 
 	/* Ensure the work is queued */
 	if (led_wq) {
-		queue_work(led_wq, &led_task);
+		queue_delayed_work(led_wq, &led_task, 0);
 	}
 
 	return 0;
@@ -629,7 +629,7 @@ void __init register_led_regions(void)
    ** avoid a race condition while writing the CMD/DATA register pair.
    **
  */
-int lcd_print( char *str )
+int lcd_print( const char *str )
 {
 	int i;
 
@@ -658,7 +658,7 @@ int lcd_print( char *str )
 	
 	/* re-queue the work */
 	if (led_wq) {
-		queue_work(led_wq, &led_task);
+		queue_delayed_work(led_wq, &led_task, 0);
 	}
 
 	return lcd_info.lcd_width;
diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c
index 97e9dc066f9..6dedbdef710 100644
--- a/drivers/parisc/power.c
+++ b/drivers/parisc/power.c
@@ -2,7 +2,7 @@
  * linux/drivers/parisc/power.c
  * HP PARISC soft power switch support driver
  *
- * Copyright (c) 2001-2005 Helge Deller <deller@gmx.de>
+ * Copyright (c) 2001-2007 Helge Deller <deller@gmx.de>
  * All rights reserved.
  *
  *
@@ -29,7 +29,6 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  *
  *
- * 
  *  HINT:
  *  Support of the soft power switch button may be enabled or disabled at
  *  runtime through the "/proc/sys/kernel/power" procfs entry.
@@ -38,34 +37,28 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/string.h>
 #include <linux/notifier.h>
 #include <linux/reboot.h>
 #include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
+#include <linux/kthread.h>
 
 #include <asm/pdc.h>
 #include <asm/io.h>
 #include <asm/led.h>
-#include <asm/uaccess.h>
 
+#define DRIVER_NAME  "powersw"
+#define KTHREAD_NAME "kpowerswd"
 
-#ifdef DEBUG
-# define DPRINTK(x...) printk(x)
-#else
-# define DPRINTK(x...)
-#endif
-
-
-/* filename in /proc which can be used to enable/disable the power switch */
-#define SYSCTL_FILENAME		"sys/kernel/power"
+/* how often should the power button be polled ? */
+#define POWERSWITCH_POLL_PER_SEC 2
 
+/* how long does the power button needs to be down until we react ? */
+#define POWERSWITCH_DOWN_SEC 2
 
+/* assembly code to access special registers */
+/* taken from PCXL ERS page 82 */
 #define DIAG_CODE(code)		(0x14000000 + ((code)<<5))
 
-/* this will go to processor.h or any other place... */
-/* taken from PCXL ERS page 82 */
 #define MFCPU_X(rDiagReg, t_ch, t_th, code) \
 	(DIAG_CODE(code) + ((rDiagReg)<<21) + ((t_ch)<<16) + ((t_th)<<0) )
 	
@@ -76,111 +69,95 @@
 #define __getDIAG(dr) ( { 			\
         register unsigned long __res asm("r28");\
 	 __asm__ __volatile__ (			\
-		".word %1\n nop\n" : "=&r" (__res) : "i" (MFCPU_T(dr,28)) \
+		".word %1" : "=&r" (__res) : "i" (MFCPU_T(dr,28) ) \
 	);					\
 	__res;					\
 } )
 
-
-static void deferred_poweroff(void *dummy)
-{
-	if (kill_cad_pid(SIGINT, 1)) {
-		/* just in case killing init process failed */
-		machine_power_off();
-	}
-}
-
-/*
- * This function gets called from interrupt context.
- * As it's called within an interrupt, it wouldn't sync if we don't
- * use schedule_work().
- */
-
-static DECLARE_WORK(poweroff_work, deferred_poweroff, NULL);
-
-static void poweroff(void)
-{
-	static int powering_off __read_mostly;
-
-	if (powering_off)
-		return;
-
-	powering_off++;
-	schedule_work(&poweroff_work);
-}
-
-
-/* local time-counter for shutdown */
+/* local shutdown counter */
 static int shutdown_timer __read_mostly;
 
 /* check, give feedback and start shutdown after one second */
 static void process_shutdown(void)
 {
 	if (shutdown_timer == 0)
-		DPRINTK(KERN_INFO "Shutdown requested...\n");
+		printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n");
 
 	shutdown_timer++;
 	
 	/* wait until the button was pressed for 1 second */
-	if (shutdown_timer == HZ) {
-#if defined (DEBUG) || defined(CONFIG_CHASSIS_LCD_LED)
-		static char msg[] = "Shutting down...";
-#endif
-		DPRINTK(KERN_INFO "%s\n", msg);
+	if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) {
+		static const char msg[] = "Shutting down...";
+		printk(KERN_INFO KTHREAD_NAME ": %s\n", msg);
 		lcd_print(msg);
-		poweroff();
+
+		/* send kill signal */
+		if (kill_cad_pid(SIGINT, 1)) {
+			/* just in case killing init process failed */
+			if (pm_power_off)
+				pm_power_off();
+		}
 	}
 }
 
 
-/* main power switch tasklet struct (scheduled from time.c) */
-DECLARE_TASKLET_DISABLED(power_tasklet, NULL, 0);
+/* main power switch task struct */
+static struct task_struct *power_task;
+
+/* filename in /proc which can be used to enable/disable the power switch */
+#define SYSCTL_FILENAME	"sys/kernel/power"
 
 /* soft power switch enabled/disabled */
 int pwrsw_enabled __read_mostly = 1;
 
-/*
- * On gecko style machines (e.g. 712/xx and 715/xx) 
- * the power switch status is stored in Bit 0 ("the highest bit")
- * of CPU diagnose register 25.
- * 
- */
-static void gecko_tasklet_func(unsigned long unused)
+/* main kernel thread worker. It polls the button state */
+static int kpowerswd(void *param)
 {
-	if (unlikely(!pwrsw_enabled))
-		return;
-
-	if (__getDIAG(25) & 0x80000000) {
-		/* power switch button not pressed or released again */
-		/* Warning: Some machines do never reset this DIAG flag! */
-		shutdown_timer = 0;
-	} else {
-		process_shutdown();
-	}
-}
-
+	__set_current_state(TASK_RUNNING);
+
+	do {
+		int button_not_pressed;
+		unsigned long soft_power_reg = (unsigned long) param;
+
+		schedule_timeout_interruptible(pwrsw_enabled ? HZ : HZ/POWERSWITCH_POLL_PER_SEC);
+		__set_current_state(TASK_RUNNING);
+
+		if (unlikely(!pwrsw_enabled))
+			continue;
+
+		if (soft_power_reg) {
+			/*
+			 * Non-Gecko-style machines:
+			 * Check the power switch status which is read from the
+			 * real I/O location at soft_power_reg.
+			 * Bit 31 ("the lowest bit) is the status of the power switch.
+			 * This bit is "1" if the button is NOT pressed.
+			 */
+			button_not_pressed = (gsc_readl(soft_power_reg) & 0x1);
+		} else {
+			/*
+			 * On gecko style machines (e.g. 712/xx and 715/xx) 
+			 * the power switch status is stored in Bit 0 ("the highest bit")
+			 * of CPU diagnose register 25.
+			 * Warning: Some machines never reset the DIAG flag, even if
+			 * the button has been released again.
+			 */
+			button_not_pressed = (__getDIAG(25) & 0x80000000);
+		}
+
+		if (likely(button_not_pressed)) {
+			if (unlikely(shutdown_timer && /* avoid writing if not necessary */
+				shutdown_timer < (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC))) {
+				shutdown_timer = 0;
+				printk(KERN_INFO KTHREAD_NAME ": Shutdown request aborted.\n");
+			}
+		} else
+			process_shutdown();
+
+
+	} while (!kthread_should_stop());
 
-
-/*
- * Check the power switch status which is read from the
- * real I/O location at soft_power_reg.
- * Bit 31 ("the lowest bit) is the status of the power switch.
- */
-
-static void polling_tasklet_func(unsigned long soft_power_reg)
-{
-        unsigned long current_status;
-	
-	if (unlikely(!pwrsw_enabled))
-		return;
-
-	current_status = gsc_readl(soft_power_reg);
-	if (current_status & 0x1) {
-		/* power switch button not pressed */
-		shutdown_timer = 0;
-	} else {
-		process_shutdown();
-	}
+	return 0;
 }
 
 
@@ -220,7 +197,7 @@ static struct notifier_block parisc_panic_block = {
 static int __init power_init(void)
 {
 	unsigned long ret;
-	unsigned long soft_power_reg = 0;
+	unsigned long soft_power_reg;
 
 #if 0
 	request_irq( IRQ_FROM_REGION(CPU_IRQ_REGION)+2, &powerfail_interrupt,
@@ -235,44 +212,44 @@ static int __init power_init(void)
 		soft_power_reg = -1UL;
 	
 	switch (soft_power_reg) {
-	case 0:		printk(KERN_INFO "Gecko-style soft power switch enabled.\n");
-			power_tasklet.func = gecko_tasklet_func;
+	case 0:		printk(KERN_INFO DRIVER_NAME ": Gecko-style soft power switch enabled.\n");
 			break;
 			
-	case -1UL:	printk(KERN_INFO "Soft power switch support not available.\n");
+	case -1UL:	printk(KERN_INFO DRIVER_NAME ": Soft power switch support not available.\n");
 			return -ENODEV;
 	
-	default:	printk(KERN_INFO "Soft power switch enabled, polling @ 0x%08lx.\n",
+	default:	printk(KERN_INFO DRIVER_NAME ": Soft power switch at 0x%08lx enabled.\n",
 				soft_power_reg);
-			power_tasklet.data = soft_power_reg;
-			power_tasklet.func = polling_tasklet_func;
+	}
+
+	power_task = kthread_run(kpowerswd, (void*)soft_power_reg, KTHREAD_NAME);
+	if (IS_ERR(power_task)) {
+		printk(KERN_ERR DRIVER_NAME ": thread creation failed.  Driver not loaded.\n");
+		pdc_soft_power_button(0);
+		return -EIO;
 	}
 
 	/* Register a call for panic conditions. */
 	atomic_notifier_chain_register(&panic_notifier_list,
 			&parisc_panic_block);
 
-	tasklet_enable(&power_tasklet);
-
 	return 0;
 }
 
 static void __exit power_exit(void)
 {
-	if (!power_tasklet.func)
-		return;
+	kthread_stop(power_task);
 
-	tasklet_disable(&power_tasklet);
 	atomic_notifier_chain_unregister(&panic_notifier_list,
 			&parisc_panic_block);
-	power_tasklet.func = NULL;
+
 	pdc_soft_power_button(0);
 }
 
-module_init(power_init);
+arch_initcall(power_init);
 module_exit(power_exit);
 
 
-MODULE_AUTHOR("Helge Deller");
+MODULE_AUTHOR("Helge Deller <deller@gmx.de>");
 MODULE_DESCRIPTION("Soft power switch driver");
 MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 76a29dadd51..322957ac2ad 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -109,7 +109,7 @@ static unsigned long piranha_bad_128k = 0;
 
 #ifdef SBA_AGP_SUPPORT
 static int sba_reserve_agpgart = 1;
-module_param(sba_reserve_agpgart, int, 1);
+module_param(sba_reserve_agpgart, int, 0444);
 MODULE_PARM_DESC(sba_reserve_agpgart, "Reserve half of IO pdir as AGPGART");
 #endif
 
@@ -846,7 +846,7 @@ static void *sba_alloc_consistent(struct device *hwdev, size_t size,
 	if (!hwdev) {
 		/* only support PCI */
 		*dma_handle = 0;
-		return 0;
+		return NULL;
 	}
 
         ret = (void *) __get_free_pages(gfp, get_order(size));