Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  parisc: Fixup last users of irq_chip->typename
  parisc: convert /proc/pdc/{lcd,led} to seq_file
  parisc: Convert BUG() to use unreachable()
  parisc: Replace old style lock init in smp.c
  parisc: use sort() instead of home-made implementation (v2)
  parisc: add CALLER_ADDR{0-6} macros
  parisc: remove unused IRQSTAT_SIRQ_PEND and IRQSTAT_SZ defines
  parisc: remove duplicated #include

13 files changed, 94 insertions, 60 deletions

diff --git a/arch/parisc/include/asm/bug.h b/arch/parisc/include/asm/bug.h
index 8cfc553fc837..75e46c557a16 100644
--- a/arch/parisc/include/asm/bug.h
+++ b/arch/parisc/include/asm/bug.h
@@ -32,14 +32,14 @@
                              "\t.popsection"                            \
                              : : "i" (__FILE__), "i" (__LINE__),        \
                              "i" (0), "i" (sizeof(struct bug_entry)) ); \
-                for(;;) ;                                               \
+                unreachable();                                          \
         } while(0)
 
 #else
 #define BUG()                                                           \
         do {                                                            \
                 asm volatile(PARISC_BUG_BREAK_ASM : : );                \
-                for(;;) ;                                               \
+                unreachable();                                          \
         } while(0)
 #endif
 
diff --git a/arch/parisc/include/asm/ftrace.h b/arch/parisc/include/asm/ftrace.h
index 2fa05dd6aeee..72c0fafaa039 100644
--- a/arch/parisc/include/asm/ftrace.h
+++ b/arch/parisc/include/asm/ftrace.h
@@ -20,6 +20,20 @@ struct ftrace_ret_stack {
  * Defined in entry.S
  */
 extern void return_to_handler(void);
+
+
+extern unsigned long return_address(unsigned int);
+
+#define HAVE_ARCH_CALLER_ADDR
+
+#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
+#define CALLER_ADDR1 return_address(1)
+#define CALLER_ADDR2 return_address(2)
+#define CALLER_ADDR3 return_address(3)
+#define CALLER_ADDR4 return_address(4)
+#define CALLER_ADDR5 return_address(5)
+#define CALLER_ADDR6 return_address(6)
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* _ASM_PARISC_FTRACE_H */
diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
index fcd3c707bf12..ec787b411e9a 100644
--- a/arch/parisc/kernel/asm-offsets.c
+++ b/arch/parisc/kernel/asm-offsets.c
@@ -244,9 +244,6 @@ int main(void)
         DEFINE(THREAD_SZ, sizeof(struct thread_info));
         DEFINE(THREAD_SZ_ALGN, align(sizeof(struct thread_info), 64));
         BLANK();
-        DEFINE(IRQSTAT_SIRQ_PEND, offsetof(irq_cpustat_t, __softirq_pending));
-        DEFINE(IRQSTAT_SZ, sizeof(irq_cpustat_t));
-        BLANK();
         DEFINE(ICACHE_BASE, offsetof(struct pdc_cache_info, ic_base));
         DEFINE(ICACHE_STRIDE, offsetof(struct pdc_cache_info, ic_stride));
         DEFINE(ICACHE_COUNT, offsetof(struct pdc_cache_info, ic_count));
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index f47465e8d040..efbcee5d2220 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -145,7 +145,7 @@ static int cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
 #endif
 
 static struct irq_chip cpu_interrupt_type = {
-        .typename       = "CPU",
+        .name           = "CPU",
         .startup        = cpu_startup_irq,
         .shutdown       = cpu_disable_irq,
         .enable         = cpu_enable_irq,
@@ -192,7 +192,7 @@ int show_interrupts(struct seq_file *p, void *v)
                 seq_printf(p, "%10u ", kstat_irqs(i));
 #endif
 
-                seq_printf(p, " %14s", irq_desc[i].chip->typename);
+                seq_printf(p, " %14s", irq_desc[i].chip->name);
 #ifndef PARISC_IRQ_CR16_COUNTS
                 seq_printf(p, "  %s", action->name);
 
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index e8467e4aa8d1..fb37ac52e46c 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -26,7 +26,6 @@
 #include <linux/stddef.h>
 #include <linux/compat.h>
 #include <linux/elf.h>
-#include <linux/tracehook.h>
 #include <asm/ucontext.h>
 #include <asm/rt_sigframe.h>
 #include <asm/uaccess.h>
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 1fd0f0cec037..3f2fce8ce6b6 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -60,8 +60,6 @@ static int smp_debug_lvl = 0;
 #define smp_debug(lvl, ...)     do { } while(0)
 #endif /* DEBUG_SMP */
 
-DEFINE_SPINLOCK(smp_lock);
-
 volatile struct task_struct *smp_init_current_idle_task;
 
 /* track which CPU is booting */
@@ -69,7 +67,7 @@ static volatile int cpu_now_booting __cpuinitdata;
 
 static int parisc_max_cpus __cpuinitdata = 1;
 
-DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
+static DEFINE_PER_CPU(spinlock_t, ipi_lock);
 
 enum ipi_message_type {
         IPI_NOP=0,
@@ -438,6 +436,11 @@ void __init smp_prepare_boot_cpu(void)
 */
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
+        int cpu;
+
+        for_each_possible_cpu(cpu)
+                spin_lock_init(&per_cpu(ipi_lock, cpu));
+
         init_cpu_present(cpumask_of(0));
 
         parisc_max_cpus = max_cpus;
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index a36799e85693..d58eac1a8288 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -13,6 +13,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/kallsyms.h>
+#include <linux/sort.h>
 
 #include <asm/uaccess.h>
 #include <asm/assembly.h>
@@ -115,24 +116,18 @@ unwind_table_init(struct unwind_table *table, const char *name,
         }
 }
 
+static int cmp_unwind_table_entry(const void *a, const void *b)
+{
+        return ((const struct unwind_table_entry *)a)->region_start
+             - ((const struct unwind_table_entry *)b)->region_start;
+}
+
 static void
 unwind_table_sort(struct unwind_table_entry *start,
                   struct unwind_table_entry *finish)
 {
-        struct unwind_table_entry el, *p, *q;
-
-        for (p = start + 1; p < finish; ++p) {
-                if (p[0].region_start < p[-1].region_start) {
-                        el = *p;
-                        q = p;
-                        do {
-                                q[0] = q[-1];
-                                --q;
-                        } while (q > start && 
-                                 el.region_start < q[-1].region_start);
-                        *q = el;
-                }
-        }
+        sort(start, finish - start, sizeof(struct unwind_table_entry),
+             cmp_unwind_table_entry, NULL);
 }
 
 struct unwind_table *
@@ -417,3 +412,30 @@ int unwind_to_user(struct unwind_frame_info *info)
 
         return ret;
 }
+
+unsigned long return_address(unsigned int level)
+{
+        struct unwind_frame_info info;
+        struct pt_regs r;
+        unsigned long sp;
+
+        /* initialize unwind info */
+        asm volatile ("copy %%r30, %0" : "=r"(sp));
+        memset(&r, 0, sizeof(struct pt_regs));
+        r.iaoq[0] = (unsigned long) current_text_addr();
+        r.gr[2] = (unsigned long) __builtin_return_address(0);
+        r.gr[30] = sp;
+        unwind_frame_init(&info, current, &r);
+
+        /* unwind stack */
+        ++level;
+        do {
+                if (unwind_once(&info) < 0 || info.ip == 0)
+                        return 0;
+                if (!__kernel_text_address(info.ip)) {
+                        return 0;
+                }
+        } while (info.ip && level--);
+
+        return info.ip;
+}
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index d69bde6a2343..c542c7bb7454 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -354,7 +354,7 @@ static unsigned int dino_startup_irq(unsigned int irq)
 }
 
 static struct irq_chip dino_interrupt_type = {
-        .typename       = "GSC-PCI",
+        .name           = "GSC-PCI",
         .startup        = dino_startup_irq,
         .shutdown       = dino_disable_irq,
         .enable         = dino_enable_irq, 
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 51220749cb65..46f503fb7fc5 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -189,7 +189,7 @@ static unsigned int eisa_startup_irq(unsigned int irq)
 }
 
 static struct irq_chip eisa_interrupt_type = {
-        .typename =     "EISA",
+        .name    =      "EISA",
         .startup =      eisa_startup_irq,
         .shutdown =     eisa_disable_irq,
         .enable =       eisa_enable_irq,
diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c
index 647adc9f85ad..c4e1f3c3c2fa 100644
--- a/drivers/parisc/gsc.c
+++ b/drivers/parisc/gsc.c
@@ -149,7 +149,7 @@ static unsigned int gsc_asic_startup_irq(unsigned int irq)
 }
 
 static struct irq_chip gsc_asic_interrupt_type = {
-        .typename =     "GSC-ASIC",
+        .name    =      "GSC-ASIC",
         .startup =      gsc_asic_startup_irq,
         .shutdown =     gsc_asic_disable_irq,
         .enable =       gsc_asic_enable_irq,
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 88e333553212..c76836727cae 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -730,7 +730,7 @@ static int iosapic_set_affinity_irq(unsigned int irq,
 #endif
 
 static struct irq_chip iosapic_interrupt_type = {
-        .typename =     "IO-SAPIC-level",
+        .name    =      "IO-SAPIC-level",
         .startup =      iosapic_startup_irq,
         .shutdown =     iosapic_disable_irq,
         .enable =       iosapic_enable_irq,
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 79caf1ca4a29..188bc8496a26 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -38,6 +38,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/reboot.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/ctype.h>
 #include <linux/blkdev.h>
 #include <linux/workqueue.h>
@@ -147,41 +148,34 @@ device_initcall(start_task);
 static void (*led_func_ptr) (unsigned char) __read_mostly;
 
 #ifdef CONFIG_PROC_FS
-static int led_proc_read(char *page, char **start, off_t off, int count, 
-        int *eof, void *data)
+static int led_proc_show(struct seq_file *m, void *v)
 {
-        char *out = page;
-        int len;
-
-        switch ((long)data)
+        switch ((long)m->private)
         {
         case LED_NOLCD:
-                out += sprintf(out, "Heartbeat: %d\n", led_heartbeat);
-                out += sprintf(out, "Disk IO: %d\n", led_diskio);
-                out += sprintf(out, "LAN Rx/Tx: %d\n", led_lanrxtx);
+                seq_printf(m, "Heartbeat: %d\n", led_heartbeat);
+                seq_printf(m, "Disk IO: %d\n", led_diskio);
+                seq_printf(m, "LAN Rx/Tx: %d\n", led_lanrxtx);
                 break;
         case LED_HASLCD:
-                out += sprintf(out, "%s\n", lcd_text);
+                seq_printf(m, "%s\n", lcd_text);
                 break;
         default:
-                *eof = 1;
                 return 0;
         }
+        return 0;
+}
 
-        len = out - page - off;
-        if (len < count) {
-                *eof = 1;
-                if (len <= 0) return 0;
-        } else {
-                len = count;
-        }
-        *start = page + off;
-        return len;
+static int led_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, led_proc_show, PDE(inode)->data);
 }
 
-static int led_proc_write(struct file *file, const char *buf, 
-        unsigned long count, void *data)
+
+static ssize_t led_proc_write(struct file *file, const char *buf,
+        size_t count, loff_t *pos)
 {
+        void *data = PDE(file->f_path.dentry->d_inode)->data;
         char *cur, lbuf[count + 1];
         int d;
 
@@ -234,6 +228,15 @@ parse_error:
         return -EINVAL;
 }
 
+static const struct file_operations led_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = led_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = led_proc_write,
+};
+
 static int __init led_create_procfs(void)
 {
         struct proc_dir_entry *proc_pdc_root = NULL;
@@ -243,19 +246,15 @@ static int __init led_create_procfs(void)
 
         proc_pdc_root = proc_mkdir("pdc", 0);
         if (!proc_pdc_root) return -1;
-        ent = create_proc_entry("led", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+        ent = proc_create_data("led", S_IRUGO|S_IWUSR, proc_pdc_root,
+                                &led_proc_fops, (void *)LED_NOLCD); /* LED */
         if (!ent) return -1;
-        ent->data = (void *)LED_NOLCD; /* LED */
-        ent->read_proc = led_proc_read;
-        ent->write_proc = led_proc_write;
 
         if (led_type == LED_HASLCD)
         {
-                ent = create_proc_entry("lcd", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+                ent = proc_create_data("lcd", S_IRUGO|S_IWUSR, proc_pdc_root,
+                                        &led_proc_fops, (void *)LED_HASLCD); /* LCD */
                 if (!ent) return -1;
-                ent->data = (void *)LED_HASLCD; /* LCD */
-                ent->read_proc = led_proc_read;
-                ent->write_proc = led_proc_write;
         }
 
         return 0;
diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c
index 675f04e6597a..a35c9c5b89e8 100644
--- a/drivers/parisc/superio.c
+++ b/drivers/parisc/superio.c
@@ -326,7 +326,7 @@ static unsigned int superio_startup_irq(unsigned int irq)
 }
 
 static struct irq_chip superio_interrupt_type = {
-        .typename =     SUPERIO,
+        .name    =      SUPERIO,
         .startup =      superio_startup_irq,
         .shutdown =     superio_disable_irq,
         .enable =       superio_enable_irq,