21 files changed, 241 insertions, 85 deletions

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 33c02143828..0888675c98d 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -9,8 +9,10 @@ config PARISC
         select RTC_DRV_GENERIC
         select INIT_ALL_POSSIBLE
         select BUG
+        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select GENERIC_ATOMIC64 if !64BIT
+        select GENERIC_HARDIRQS_NO__DO_IRQ
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
           in many of their workstations & servers (HP9000 700 and 800 series,
@@ -77,6 +79,9 @@ config IRQ_PER_CPU
         bool
         default y
 
+config GENERIC_HARDIRQS_NO__DO_IRQ
+        def_bool y
+
 # unless you want to implement ACPI on PA-RISC ... ;-)
 config PM
         bool
diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c
index 1444875a761..0dc8543acb4 100644
--- a/arch/parisc/hpux/fs.c
+++ b/arch/parisc/hpux/fs.c
@@ -41,8 +41,10 @@ int hpux_execve(struct pt_regs *regs)
         if (IS_ERR(filename))
                 goto out;
 
-        error = do_execve(filename, (char __user * __user *) regs->gr[25],
-                (char __user * __user *) regs->gr[24], regs);
+        error = do_execve(filename,
+                          (const char __user *const __user *) regs->gr[25],
+                          (const char __user *const __user *) regs->gr[24],
+                          regs);
 
         putname(filename);
 
diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h
index 039880e7d2c..47f11c707b6 100644
--- a/arch/parisc/include/asm/cache.h
+++ b/arch/parisc/include/asm/cache.h
@@ -24,8 +24,6 @@
 
 #ifndef __ASSEMBLY__
 
-#define L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
-
 #define SMP_CACHE_BYTES L1_CACHE_BYTES
 
 #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index dba11aedce1..f388a85bba1 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -126,20 +126,20 @@ static inline void *kmap(struct page *page)
 
 #define kunmap(page)                    kunmap_parisc(page_address(page))
 
-static inline void *kmap_atomic(struct page *page, enum km_type idx)
+static inline void *__kmap_atomic(struct page *page)
 {
         pagefault_disable();
         return page_address(page);
 }
 
-static inline void kunmap_atomic_notypecheck(void *addr, enum km_type idx)
+static inline void __kunmap_atomic(void *addr)
 {
         kunmap_parisc(addr);
         pagefault_enable();
 }
 
-#define kmap_atomic_prot(page, idx, prot)       kmap_atomic(page, idx)
-#define kmap_atomic_pfn(pfn, idx)       kmap_atomic(pfn_to_page(pfn), (idx))
+#define kmap_atomic_prot(page, prot)    kmap_atomic(page)
+#define kmap_atomic_pfn(pfn)    kmap_atomic(pfn_to_page(pfn))
 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
 #endif
 
diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
index 02b77baa5da..efa0b60c63f 100644
--- a/arch/parisc/include/asm/compat.h
+++ b/arch/parisc/include/asm/compat.h
@@ -147,7 +147,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
         return (u32)(unsigned long)uptr;
 }
 
-static __inline__ void __user *compat_alloc_user_space(long len)
+static __inline__ void __user *arch_compat_alloc_user_space(long len)
 {
         struct pt_regs *regs = &current->thread.regs;
         return (void __user *)regs->gr[30];
diff --git a/arch/parisc/include/asm/irq.h b/arch/parisc/include/asm/irq.h
index dfa26b67f91..c67dccf2e31 100644
--- a/arch/parisc/include/asm/irq.h
+++ b/arch/parisc/include/asm/irq.h
@@ -40,7 +40,7 @@ struct irq_chip;
 void no_ack_irq(unsigned int irq);
 void no_end_irq(unsigned int irq);
 void cpu_ack_irq(unsigned int irq);
-void cpu_end_irq(unsigned int irq);
+void cpu_eoi_irq(unsigned int irq);
 
 extern int txn_alloc_irq(unsigned int nbits);
 extern int txn_claim_irq(int);
diff --git a/arch/parisc/include/asm/irqflags.h b/arch/parisc/include/asm/irqflags.h
new file mode 100644
index 00000000000..34f9cb9b475
--- /dev/null
+++ b/arch/parisc/include/asm/irqflags.h
@@ -0,0 +1,46 @@
+#ifndef __PARISC_IRQFLAGS_H
+#define __PARISC_IRQFLAGS_H
+
+#include <linux/types.h>
+#include <asm/psw.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+        unsigned long flags;
+        asm volatile("ssm 0, %0" : "=r" (flags) : : "memory");
+        return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+        asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory");
+}
+
+static inline void arch_local_irq_enable(void)
+{
+        asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory");
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+        unsigned long flags;
+        asm volatile("rsm %1,%0" : "=r" (flags) : "i" (PSW_I) : "memory");
+        return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+        asm volatile("mtsm %0" : : "r" (flags) : "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+        return (flags & PSW_I) == 0;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+        return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* __PARISC_IRQFLAGS_H */
diff --git a/arch/parisc/include/asm/perf_event.h b/arch/parisc/include/asm/perf_event.h
index cc146427d8f..1e0fd8ba6c0 100644
--- a/arch/parisc/include/asm/perf_event.h
+++ b/arch/parisc/include/asm/perf_event.h
@@ -1,7 +1,6 @@
 #ifndef __ASM_PARISC_PERF_EVENT_H
 #define __ASM_PARISC_PERF_EVENT_H
 
-/* parisc only supports software events through this interface. */
-static inline void set_perf_event_pending(void) { }
+/* Empty, just to avoid compiling error */
 
 #endif /* __ASM_PARISC_PERF_EVENT_H */
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 01c15035e78..865f37a8a88 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -397,9 +397,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 #define pte_offset_kernel(pmd, address) \
         ((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
 #define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
 #define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
 
 #define pte_unmap(pte)                  do { } while (0)
 #define pte_unmap_nested(pte)           do { } while (0)
diff --git a/arch/parisc/include/asm/system.h b/arch/parisc/include/asm/system.h
index 2ab4af58ecb..b19e63a8e84 100644
--- a/arch/parisc/include/asm/system.h
+++ b/arch/parisc/include/asm/system.h
@@ -1,7 +1,7 @@
 #ifndef __PARISC_SYSTEM_H
 #define __PARISC_SYSTEM_H
 
-#include <asm/psw.h>
+#include <linux/irqflags.h>
 
 /* The program status word as bitfields.  */
 struct pa_psw {
@@ -48,23 +48,6 @@ extern struct task_struct *_switch_to(struct task_struct *, struct task_struct *
         (last) = _switch_to(prev, next);                        \
 } while(0)
 
-/* interrupt control */
-#define local_save_flags(x)     __asm__ __volatile__("ssm 0, %0" : "=r" (x) : : "memory")
-#define local_irq_disable()     __asm__ __volatile__("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
-#define local_irq_enable()      __asm__ __volatile__("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
-
-#define local_irq_save(x) \
-        __asm__ __volatile__("rsm %1,%0" : "=r" (x) :"i" (PSW_I) : "memory" )
-#define local_irq_restore(x) \
-        __asm__ __volatile__("mtsm %0" : : "r" (x) : "memory" )
-
-#define irqs_disabled()                 \
-({                                      \
-        unsigned long flags;            \
-        local_save_flags(flags);        \
-        (flags & PSW_I) == 0;           \
-})
-
 #define mfctl(reg)      ({              \
         unsigned long cr;               \
         __asm__ __volatile__(           \
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
index 1ce7d2851d9..3eb82c2a5ec 100644
--- a/arch/parisc/include/asm/unistd.h
+++ b/arch/parisc/include/asm/unistd.h
@@ -813,8 +813,9 @@
 #define __NR_perf_event_open    (__NR_Linux + 318)
 #define __NR_recvmmsg           (__NR_Linux + 319)
 #define __NR_accept4            (__NR_Linux + 320)
+#define __NR_prlimit64          (__NR_Linux + 321)
 
-#define __NR_Linux_syscalls     (__NR_accept4 + 1)
+#define __NR_Linux_syscalls     (__NR_prlimit64 + 1)
 
 
 #define __IGNORE_select         /* newselect */
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index efbcee5d222..5024f643b3b 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -52,7 +52,7 @@ static volatile unsigned long cpu_eiem = 0;
 */
 static DEFINE_PER_CPU(unsigned long, local_ack_eiem) = ~0UL;
 
-static void cpu_disable_irq(unsigned int irq)
+static void cpu_mask_irq(unsigned int irq)
 {
         unsigned long eirr_bit = EIEM_MASK(irq);
 
@@ -63,7 +63,7 @@ static void cpu_disable_irq(unsigned int irq)
          * then gets disabled */
 }
 
-static void cpu_enable_irq(unsigned int irq)
+static void cpu_unmask_irq(unsigned int irq)
 {
         unsigned long eirr_bit = EIEM_MASK(irq);
 
@@ -75,12 +75,6 @@ static void cpu_enable_irq(unsigned int irq)
         smp_send_all_nop();
 }
 
-static unsigned int cpu_startup_irq(unsigned int irq)
-{
-        cpu_enable_irq(irq);
-        return 0;
-}
-
 void no_ack_irq(unsigned int irq) { }
 void no_end_irq(unsigned int irq) { }
 
@@ -99,7 +93,7 @@ void cpu_ack_irq(unsigned int irq)
         mtctl(mask, 23);
 }
 
-void cpu_end_irq(unsigned int irq)
+void cpu_eoi_irq(unsigned int irq)
 {
         unsigned long mask = EIEM_MASK(irq);
         int cpu = smp_processor_id();
@@ -146,12 +140,10 @@ static int cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
 
 static struct irq_chip cpu_interrupt_type = {
         .name           = "CPU",
-        .startup        = cpu_startup_irq,
-        .shutdown       = cpu_disable_irq,
-        .enable         = cpu_enable_irq,
-        .disable        = cpu_disable_irq,
+        .mask           = cpu_mask_irq,
+        .unmask         = cpu_unmask_irq,
         .ack            = cpu_ack_irq,
-        .end            = cpu_end_irq,
+        .eoi            = cpu_eoi_irq,
 #ifdef CONFIG_SMP
         .set_affinity   = cpu_set_affinity_irq,
 #endif
@@ -247,10 +239,11 @@ int cpu_claim_irq(unsigned int irq, struct irq_chip *type, void *data)
         if (irq_desc[irq].chip != &cpu_interrupt_type)
                 return -EBUSY;
 
+        /* for iosapic interrupts */
         if (type) {
-                irq_desc[irq].chip = type;
-                irq_desc[irq].chip_data = data;
-                cpu_interrupt_type.enable(irq);
+                set_irq_chip_and_handler(irq, type, handle_level_irq);
+                set_irq_chip_data(irq, data);
+                cpu_unmask_irq(irq);
         }
         return 0;
 }
@@ -368,7 +361,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
                 goto set_out;
         }
 #endif
-        __do_IRQ(irq);
+        generic_handle_irq(irq);
 
  out:
         irq_exit();
@@ -398,14 +391,15 @@ static void claim_cpu_irqs(void)
 {
         int i;
         for (i = CPU_IRQ_BASE; i <= CPU_IRQ_MAX; i++) {
-                irq_desc[i].chip = &cpu_interrupt_type;
+                set_irq_chip_and_handler(i, &cpu_interrupt_type,
+                        handle_level_irq);
         }
 
-        irq_desc[TIMER_IRQ].action = &timer_action;
-        irq_desc[TIMER_IRQ].status = IRQ_PER_CPU;
+        set_irq_handler(TIMER_IRQ, handle_percpu_irq);
+        setup_irq(TIMER_IRQ, &timer_action);
 #ifdef CONFIG_SMP
-        irq_desc[IPI_IRQ].action = &ipi_action;
-        irq_desc[IPI_IRQ].status = IRQ_PER_CPU;
+        set_irq_handler(IPI_IRQ, handle_percpu_irq);
+        setup_irq(IPI_IRQ, &ipi_action);
 #endif
 }
 
@@ -423,3 +417,4 @@ void __init init_IRQ(void)
         set_eiem(cpu_eiem);     /* EIEM : enable all external intr */
 
 }
+
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 159a2b81e90..6e81bb596e5 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -941,11 +941,10 @@ int module_finalize(const Elf_Ehdr *hdr,
         nsyms = newptr - (Elf_Sym *)symhdr->sh_addr;
         DEBUGP("NEW num_symtab %lu\n", nsyms);
         symhdr->sh_size = nsyms * sizeof(Elf_Sym);
-        return module_bug_finalize(hdr, sechdrs, me);
+        return 0;
 }
 
 void module_arch_cleanup(struct module *mod)
 {
         deregister_unwind_table(mod);
-        module_bug_cleanup(mod);
 }
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index 1ff366cb968..66d1f17fdb9 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -12,6 +12,7 @@
  *    Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
  *    Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
  *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
+ *    Copyright (C) 2010 Guy Martin <gmsoft at tuxicoman.be>
  *
  *
  *    This program is free software; you can redistribute it and/or modify
@@ -31,12 +32,11 @@
 
 /*
  *  The PDC console is a simple console, which can be used for debugging 
- *  boot related problems on HP PA-RISC machines.
+ *  boot related problems on HP PA-RISC machines. It is also useful when no
+ *  other console works.
  *
  *  This code uses the ROM (=PDC) based functions to read and write characters
  *  from and to PDC's boot path.
- *  Since all character read from that path must be polled, this code never
- *  can or will be a fully functional linux console.
  */
 
 /* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems. 
@@ -53,6 +53,7 @@
 #include <asm/pdc.h>            /* for iodc_call() proto and friends */
 
 static DEFINE_SPINLOCK(pdc_console_lock);
+static struct console pdc_cons;
 
 static void pdc_console_write(struct console *co, const char *s, unsigned count)
 {
@@ -85,12 +86,138 @@ static int pdc_console_setup(struct console *co, char *options)
 
 #if defined(CONFIG_PDC_CONSOLE)
 #include <linux/vt_kern.h>
+#include <linux/tty_flip.h>
+
+#define PDC_CONS_POLL_DELAY (30 * HZ / 1000)
+
+static struct timer_list pdc_console_timer;
+
+extern struct console * console_drivers;
+
+static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp)
+{
+
+        mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
+
+        return 0;
+}
+
+static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp)
+{
+        if (!tty->count)
+                del_timer(&pdc_console_timer);
+}
+
+static int pdc_console_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+        pdc_console_write(NULL, buf, count);
+        return count;
+}
+
+static int pdc_console_tty_write_room(struct tty_struct *tty)
+{
+        return 32768; /* no limit, no buffer used */
+}
+
+static int pdc_console_tty_chars_in_buffer(struct tty_struct *tty)
+{
+        return 0; /* no buffer */
+}
+
+static struct tty_driver *pdc_console_tty_driver;
+
+static const struct tty_operations pdc_console_tty_ops = {
+        .open = pdc_console_tty_open,
+        .close = pdc_console_tty_close,
+        .write = pdc_console_tty_write,
+        .write_room = pdc_console_tty_write_room,
+        .chars_in_buffer = pdc_console_tty_chars_in_buffer,
+};
+
+static void pdc_console_poll(unsigned long unused)
+{
+
+        int data, count = 0;
+
+        struct tty_struct *tty = pdc_console_tty_driver->ttys[0];
+
+        if (!tty)
+                return;
+
+        while (1) {
+                data = pdc_console_poll_key(NULL);
+                if (data == -1)
+                        break;
+                tty_insert_flip_char(tty, data & 0xFF, TTY_NORMAL);
+                count ++;
+        }
+
+        if (count)
+                tty_flip_buffer_push(tty);
+
+        if (tty->count && (pdc_cons.flags & CON_ENABLED))
+                mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
+}
+
+static int __init pdc_console_tty_driver_init(void)
+{
+
+        int err;
+        struct tty_driver *drv;
+
+        /* Check if the console driver is still registered.
+         * It is unregistered if the pdc console was not selected as the
+         * primary console. */
+
+        struct console *tmp = console_drivers;
+
+        for (tmp = console_drivers; tmp; tmp = tmp->next)
+                if (tmp == &pdc_cons)
+                        break;
+
+        if (!tmp) {
+                printk(KERN_INFO "PDC console driver not registered anymore, not creating %s\n", pdc_cons.name);
+                return -ENODEV;
+        }
+
+        printk(KERN_INFO "The PDC console driver is still registered, removing CON_BOOT flag\n");
+        pdc_cons.flags &= ~CON_BOOT;
+
+        drv = alloc_tty_driver(1);
+
+        if (!drv)
+                return -ENOMEM;
+
+        drv->driver_name = "pdc_cons";
+        drv->name = "ttyB";
+        drv->major = MUX_MAJOR;
+        drv->minor_start = 0;
+        drv->type = TTY_DRIVER_TYPE_SYSTEM;
+        drv->init_termios = tty_std_termios;
+        drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
+        tty_set_operations(drv, &pdc_console_tty_ops);
+
+        err = tty_register_driver(drv);
+        if (err) {
+                printk(KERN_ERR "Unable to register the PDC console TTY driver\n");
+                return err;
+        }
+
+        pdc_console_tty_driver = drv;
+
+        /* No need to initialize the pdc_console_timer if tty isn't allocated */
+        init_timer(&pdc_console_timer);
+        pdc_console_timer.function = pdc_console_poll;
+
+        return 0;
+}
+
+module_init(pdc_console_tty_driver_init);
 
 static struct tty_driver * pdc_console_device (struct console *c, int *index)
 {
-        extern struct tty_driver console_driver;
-        *index = c->index ? c->index-1 : fg_console;
-        return &console_driver;
+        *index = c->index;
+        return pdc_console_tty_driver;
 }
 #else
 #define pdc_console_device NULL
@@ -101,7 +228,7 @@ static struct console pdc_cons = {
         .write =        pdc_console_write,
         .device =       pdc_console_device,
         .setup =        pdc_console_setup,
-        .flags =        CON_BOOT | CON_PRINTBUFFER | CON_ENABLED,
+        .flags =        CON_BOOT | CON_PRINTBUFFER,
         .index =        -1,
 };
 
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index f9f6783e4bd..ba0c053e25a 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -46,7 +46,6 @@
 #include <linux/init.h>
 #include <linux/proc_fs.h>
 #include <linux/miscdevice.h>
-#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 
 #include <asm/uaccess.h>
@@ -261,16 +260,13 @@ printk("Preparing to start counters\n");
  */
 static int perf_open(struct inode *inode, struct file *file)
 {
-        lock_kernel();
         spin_lock(&perf_lock);
         if (perf_enabled) {
                 spin_unlock(&perf_lock);
-                unlock_kernel();
                 return -EBUSY;
         }
         perf_enabled = 1;
         spin_unlock(&perf_lock);
-        unlock_kernel();
 
         return 0;
 }
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 76332dadc6e..4b4b9181a1a 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -348,17 +348,22 @@ asmlinkage int sys_execve(struct pt_regs *regs)
         error = PTR_ERR(filename);
         if (IS_ERR(filename))
                 goto out;
-        error = do_execve(filename, (char __user * __user *) regs->gr[25],
-                (char __user * __user *) regs->gr[24], regs);
+        error = do_execve(filename,
+                          (const char __user *const __user *) regs->gr[25],
+                          (const char __user *const __user *) regs->gr[24],
+                          regs);
         putname(filename);
 out:
 
         return error;
 }
 
-extern int __execve(const char *filename, char *const argv[],
-                char *const envp[], struct task_struct *task);
-int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+extern int __execve(const char *filename,
+                    const char *const argv[],
+                    const char *const envp[], struct task_struct *task);
+int kernel_execve(const char *filename,
+                  const char *const argv[],
+                  const char *const envp[])
 {
         return __execve(filename, argv, envp, current);
 }
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index c4f49e45129..2905b1f52d3 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -110,7 +110,8 @@ void user_enable_block_step(struct task_struct *task)
         pa_psw(task)->l = 0;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         long ret = -EIO;
@@ -120,11 +121,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         /* Read the word at location addr in the USER area.  For ptraced
            processes, the kernel saves all regs on a syscall. */
         case PTRACE_PEEKUSR:
-                if ((addr & (sizeof(long)-1)) ||
-                    (unsigned long) addr >= sizeof(struct pt_regs))
+                if ((addr & (sizeof(unsigned long)-1)) ||
+                     addr >= sizeof(struct pt_regs))
                         break;
                 tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
-                ret = put_user(tmp, (unsigned long *) data);
+                ret = put_user(tmp, (unsigned long __user *) data);
                 break;
 
         /* Write the word at location addr in the USER area.  This will need
@@ -151,8 +152,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
                 }
 
-                if ((addr & (sizeof(long)-1)) ||
-                    (unsigned long) addr >= sizeof(struct pt_regs))
+                if ((addr & (sizeof(unsigned long)-1)) ||
+                     addr >= sizeof(struct pt_regs))
                         break;
                 if ((addr >= PT_GR1 && addr <= PT_GR31) ||
                                 addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 3d52c978738..74867dfdabe 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -419,6 +419,7 @@
         ENTRY_SAME(perf_event_open)
         ENTRY_COMP(recvmmsg)
         ENTRY_SAME(accept4)             /* 320 */
+        ENTRY_SAME(prlimit64)
 
         /* Nothing yet */
 
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 92d977bb5ea..234e3682cf0 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -619,15 +619,12 @@ void handle_unaligned(struct pt_regs *regs)
                 flop=1;
                 ret = emulate_std(regs, R2(regs->iir),1);
                 break;
-
-#ifdef CONFIG_PA20
         case OPCODE_LDD_L:
                 ret = emulate_ldd(regs, R2(regs->iir),0);
                 break;
         case OPCODE_STD_L:
                 ret = emulate_std(regs, R2(regs->iir),0);
                 break;
-#endif
         }
 #endif
         switch (regs->iir & OPCODE3_MASK)
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index d58eac1a828..76ed62ed785 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -80,8 +80,11 @@ find_unwind_entry(unsigned long addr)
                         if (addr >= table->start && 
                             addr <= table->end)
                                 e = find_unwind_entry_in_table(table, addr);
-                        if (e)
+                        if (e) {
+                                /* Move-to-front to exploit common traces */
+                                list_move(&table->list, &unwind_tables);
                                 break;
+                        }
                 }
 
         return e;
diff --git a/arch/parisc/math-emu/Makefile b/arch/parisc/math-emu/Makefile
index 1f3f225897f..0bd63b08a79 100644
--- a/arch/parisc/math-emu/Makefile
+++ b/arch/parisc/math-emu/Makefile
@@ -3,7 +3,7 @@
 #
 
 # See arch/parisc/math-emu/README
-EXTRA_CFLAGS += -Wno-parentheses -Wno-implicit-function-declaration \
+ccflags-y := -Wno-parentheses -Wno-implicit-function-declaration \
         -Wno-uninitialized -Wno-strict-prototypes -Wno-return-type \
         -Wno-implicit-int