Merge branch 'linus' into core/iommu

Conflicts:
	arch/ia64/include/asm/dma-mapping.h
	arch/ia64/include/asm/machvec.h
	arch/ia64/include/asm/machvec_sn2.h

33 files changed, 126 insertions, 111 deletions

diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c
index 907a5533c845..c5b5212cc3f9 100644
--- a/arch/m68k/amiga/amiints.c
+++ b/arch/m68k/amiga/amiints.c
@@ -72,10 +72,14 @@ static struct irq_controller amiga_irq_controller = {
 
 void __init amiga_init_IRQ(void)
 {
-        request_irq(IRQ_AUTO_1, ami_int1, 0, "int1", NULL);
-        request_irq(IRQ_AUTO_3, ami_int3, 0, "int3", NULL);
-        request_irq(IRQ_AUTO_4, ami_int4, 0, "int4", NULL);
-        request_irq(IRQ_AUTO_5, ami_int5, 0, "int5", NULL);
+        if (request_irq(IRQ_AUTO_1, ami_int1, 0, "int1", NULL))
+                pr_err("Couldn't register int%d\n", 1);
+        if (request_irq(IRQ_AUTO_3, ami_int3, 0, "int3", NULL))
+                pr_err("Couldn't register int%d\n", 3);
+        if (request_irq(IRQ_AUTO_4, ami_int4, 0, "int4", NULL))
+                pr_err("Couldn't register int%d\n", 4);
+        if (request_irq(IRQ_AUTO_5, ami_int5, 0, "int5", NULL))
+                pr_err("Couldn't register int%d\n", 5);
 
         m68k_setup_irq_controller(&amiga_irq_controller, IRQ_USER, AMI_STD_IRQS);
 
diff --git a/arch/m68k/amiga/cia.c b/arch/m68k/amiga/cia.c
index 343fab49bd9a..ecd0f7ca6f0e 100644
--- a/arch/m68k/amiga/cia.c
+++ b/arch/m68k/amiga/cia.c
@@ -176,5 +176,7 @@ void __init cia_init_IRQ(struct ciabase *base)
         /* override auto int and install CIA handler */
         m68k_setup_irq_controller(&auto_irq_controller, base->handler_irq, 1);
         m68k_irq_startup(base->handler_irq);
-        request_irq(base->handler_irq, cia_handler, IRQF_SHARED, base->name, base);
+        if (request_irq(base->handler_irq, cia_handler, IRQF_SHARED,
+                        base->name, base))
+                pr_err("Couldn't register %s interrupt\n", base->name);
 }
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index ab9862c3a136..6e562751ad51 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -493,7 +493,8 @@ static void __init amiga_sched_init(irq_handler_t timer_routine)
          * Please don't change this to use ciaa, as it interferes with the
          * SCSI code. We'll have to take a look at this later
          */
-        request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL);
+        if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
+                pr_err("Couldn't register timer interrupt\n");
         /* start timer */
         ciab.cra |= 0x11;
 }
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index 78df98f2029a..8d3eafab1ffe 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c
@@ -31,10 +31,6 @@ extern unsigned long dn_gettimeoffset(void);
 extern int dn_dummy_hwclk(int, struct rtc_time *);
 extern int dn_dummy_set_clock_mmss(unsigned long);
 extern void dn_dummy_reset(void);
-extern void dn_dummy_waitbut(void);
-extern struct fb_info *dn_fb_init(long *);
-extern void dn_dummy_debug_init(void);
-extern irqreturn_t dn_process_int(int irq, struct pt_regs *fp);
 #ifdef CONFIG_HEARTBEAT
 static void dn_heartbeat(int on);
 #endif
@@ -204,7 +200,8 @@ void dn_sched_init(irq_handler_t timer_routine)
         printk("*(0x10803) %02x\n",*(volatile unsigned char *)(timer+0x3));
 #endif
 
-        request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine);
+        if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine))
+                pr_err("Couldn't register timer interrupt\n");
 }
 
 unsigned long dn_gettimeoffset(void) {
diff --git a/arch/m68k/atari/atakeyb.c b/arch/m68k/atari/atakeyb.c
index c038b7c7eff0..a5f33c059979 100644
--- a/arch/m68k/atari/atakeyb.c
+++ b/arch/m68k/atari/atakeyb.c
@@ -33,7 +33,6 @@
 #include <asm/atari_joystick.h>
 #include <asm/irq.h>
 
-extern unsigned int keymap_count;
 
 /* Hook for MIDI serial driver */
 void (*atari_MIDI_interrupt_hook) (void);
@@ -567,14 +566,19 @@ static int atari_keyb_done = 0;
 
 int atari_keyb_init(void)
 {
+        int error;
+
         if (atari_keyb_done)
                 return 0;
 
         kb_state.state = KEYBOARD;
         kb_state.len = 0;
 
-        request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, IRQ_TYPE_SLOW,
-                    "keyboard/mouse/MIDI", atari_keyboard_interrupt);
+        error = request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt,
+                            IRQ_TYPE_SLOW, "keyboard/mouse/MIDI",
+                            atari_keyboard_interrupt);
+        if (error)
+                return error;
 
         atari_turnoff_irq(IRQ_MFP_ACIA);
         do {
diff --git a/arch/m68k/atari/stdma.c b/arch/m68k/atari/stdma.c
index d1bd029a34ac..604329fafbb8 100644
--- a/arch/m68k/atari/stdma.c
+++ b/arch/m68k/atari/stdma.c
@@ -179,8 +179,9 @@ EXPORT_SYMBOL(stdma_islocked);
 void __init stdma_init(void)
 {
         stdma_isr = NULL;
-        request_irq(IRQ_MFP_FDC, stdma_int, IRQ_TYPE_SLOW | IRQF_SHARED,
-                    "ST-DMA: floppy/ACSI/IDE/Falcon-SCSI", stdma_int);
+        if (request_irq(IRQ_MFP_FDC, stdma_int, IRQ_TYPE_SLOW | IRQF_SHARED,
+                        "ST-DMA: floppy/ACSI/IDE/Falcon-SCSI", stdma_int))
+                pr_err("Couldn't register ST-DMA interrupt\n");
 }
 
 
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index 1edde27fa32d..d076ff8d1b39 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -31,8 +31,9 @@ atari_sched_init(irq_handler_t timer_routine)
     /* start timer C, div = 1:100 */
     mfp.tim_ct_cd = (mfp.tim_ct_cd & 15) | 0x60;
     /* install interrupt service routine for MFP Timer C */
-    request_irq(IRQ_MFP_TIMC, timer_routine, IRQ_TYPE_SLOW,
-                "timer", timer_routine);
+    if (request_irq(IRQ_MFP_TIMC, timer_routine, IRQ_TYPE_SLOW,
+                    "timer", timer_routine))
+        pr_err("Couldn't register timer interrupt\n");
 }
 
 /* ++andreas: gettimeoffset fixed to check for pending interrupt */
diff --git a/arch/m68k/bvme6000/config.c b/arch/m68k/bvme6000/config.c
index c072595928c0..9fe6fefb5e14 100644
--- a/arch/m68k/bvme6000/config.c
+++ b/arch/m68k/bvme6000/config.c
@@ -43,7 +43,6 @@ extern unsigned long bvme6000_gettimeoffset (void);
 extern int bvme6000_hwclk (int, struct rtc_time *);
 extern int bvme6000_set_clock_mmss (unsigned long);
 extern void bvme6000_reset (void);
-extern void bvme6000_waitbut(void);
 void bvme6000_set_vectors (void);
 
 /* Save tick handler routine pointer, will point to do_timer() in
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c
index dd7c8a2583d3..f6312c7d8727 100644
--- a/arch/m68k/hp300/time.c
+++ b/arch/m68k/hp300/time.c
@@ -70,7 +70,8 @@ void __init hp300_sched_init(irq_handler_t vector)
 
   asm volatile(" movpw %0,%1@(5)" : : "d" (INTVAL), "a" (CLOCKBASE));
 
-  request_irq(IRQ_AUTO_6, hp300_tick, IRQ_FLG_STD, "timer tick", vector);
+  if (request_irq(IRQ_AUTO_6, hp300_tick, IRQ_FLG_STD, "timer tick", vector))
+    pr_err("Couldn't register timer interrupt\n");
 
   out_8(CLOCKBASE + CLKCR2, 0x1);               /* select CR1 */
   out_8(CLOCKBASE + CLKCR1, 0x40);              /* enable irq */
diff --git a/arch/m68k/kernel/.gitignore b/arch/m68k/kernel/.gitignore
new file mode 100644
index 000000000000..c5f676c3c224
--- /dev/null
+++ b/arch/m68k/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index f28404d9a2bc..5c332f2b9b83 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -424,7 +424,7 @@ resume:
 .data
 ALIGN
 sys_call_table:
-        .long sys_ni_syscall    /* 0  -  old "setup()" system call*/
+        .long sys_restart_syscall       /* 0 - old "setup()" system call, used for restarting */
         .long sys_exit
         .long sys_fork
         .long sys_read
@@ -513,7 +513,7 @@ sys_call_table:
         .long sys_uselib
         .long sys_swapon
         .long sys_reboot
-        .long old_readdir
+        .long sys_old_readdir
         .long old_mmap          /* 90 */
         .long sys_munmap
         .long sys_truncate
diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c
index 4d97bd2bd573..303730afb1c9 100644
--- a/arch/m68k/kernel/setup.c
+++ b/arch/m68k/kernel/setup.c
@@ -26,6 +26,7 @@
 #include <linux/initrd.h>
 
 #include <asm/bootinfo.h>
+#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/fpu.h>
 #include <asm/irq.h>
@@ -62,7 +63,6 @@ EXPORT_SYMBOL(vme_brdtype);
 int m68k_is040or060;
 EXPORT_SYMBOL(m68k_is040or060);
 
-extern int end;
 extern unsigned long availmem;
 
 int m68k_num_memory;
@@ -215,11 +215,10 @@ static void __init m68k_parse_bootinfo(const struct bi_record *record)
 
 void __init setup_arch(char **cmdline_p)
 {
-        extern int _etext, _edata, _end;
         int i;
 
         /* The bootinfo is located right after the kernel bss */
-        m68k_parse_bootinfo((const struct bi_record *)&_end);
+        m68k_parse_bootinfo((const struct bi_record *)_end);
 
         if (CPU_IS_040)
                 m68k_is040or060 = 4;
@@ -252,9 +251,9 @@ void __init setup_arch(char **cmdline_p)
         }
 
         init_mm.start_code = PAGE_OFFSET;
-        init_mm.end_code = (unsigned long) &_etext;
-        init_mm.end_data = (unsigned long) &_edata;
-        init_mm.brk = (unsigned long) &_end;
+        init_mm.end_code = (unsigned long)_etext;
+        init_mm.end_data = (unsigned long)_edata;
+        init_mm.brk = (unsigned long)_end;
 
         *cmdline_p = m68k_command_line;
         memcpy(boot_command_line, *cmdline_p, CL_SIZE);
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index f9af893cd289..de2d05ddd86d 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -326,6 +326,9 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __u
         struct sigcontext context;
         int err;
 
+        /* Always make any pending restarted system calls return -EINTR */
+        current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
         /* get previous context */
         if (copy_from_user(&context, usc, sizeof(context)))
                 goto badframe;
@@ -411,6 +414,9 @@ rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
         unsigned long usp;
         int err;
 
+        /* Always make any pending restarted system calls return -EINTR */
+        current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
         err = __get_user(temp, &uc->uc_mcontext.version);
         if (temp != MCONTEXT_VERSION)
                 goto badframe;
@@ -937,6 +943,15 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
                 regs->d0 = -EINTR;
                 break;
 
+        case -ERESTART_RESTARTBLOCK:
+                if (!has_handler) {
+                        regs->d0 = __NR_restart_syscall;
+                        regs->pc -= 2;
+                        break;
+                }
+                regs->d0 = -EINTR;
+                break;
+
         case -ERESTARTSYS:
                 if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
                         regs->d0 = -EINTR;
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 8a4919e4d36a..d9368c0709ba 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -33,6 +33,7 @@ SECTIONS
         } :data
   /* End of data goes *here* so that freeing init code works properly. */
   _edata = .;
+  NOTES
 
   /* will be freed after init */
   . = ALIGN(PAGE_SIZE); /* Init code and data */
diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c
index 245d16d078ad..2a96bebd8969 100644
--- a/arch/m68k/mac/baboon.c
+++ b/arch/m68k/mac/baboon.c
@@ -92,7 +92,8 @@ static irqreturn_t baboon_irq(int irq, void *dev_id)
 void __init baboon_register_interrupts(void)
 {
         baboon_disabled = 0;
-        request_irq(IRQ_NUBUS_C, baboon_irq, 0, "baboon", (void *)baboon);
+        if (request_irq(IRQ_NUBUS_C, baboon_irq, 0, "baboon", (void *)baboon))
+                pr_err("Couldn't register baboon interrupt\n");
 }
 
 /*
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index 8819b97be324..98b6bcfb37bf 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -47,13 +47,6 @@
 
 struct mac_booter_data mac_bi_data;
 
-/* New m68k bootinfo stuff and videobase */
-
-extern int m68k_num_memory;
-extern struct mem_info m68k_memory[NUM_MEMINFO];
-
-extern struct mem_info m68k_ramdisk;
-
 /* The phys. video addr. - might be bogus on some machines */
 static unsigned long mac_orig_videoaddr;
 
@@ -61,7 +54,6 @@ static unsigned long mac_orig_videoaddr;
 extern unsigned long mac_gettimeoffset(void);
 extern int mac_hwclk(int, struct rtc_time *);
 extern int mac_set_clock_mmss(unsigned long);
-extern int show_mac_interrupts(struct seq_file *, void *);
 extern void iop_preinit(void);
 extern void iop_init(void);
 extern void via_init(void);
@@ -805,10 +797,6 @@ static void __init mac_identify(void)
                 mac_bi_data.boottime, mac_bi_data.gmtbias);
         printk(KERN_DEBUG " Machine ID: %ld CPUid: 0x%lx memory size: 0x%lx \n",
                 mac_bi_data.id, mac_bi_data.cpuid, mac_bi_data.memsize);
-#if 0
-        printk("Ramdisk: addr 0x%lx size 0x%lx\n",
-                m68k_ramdisk.addr, m68k_ramdisk.size);
-#endif
 
         iop_init();
         via_init();
diff --git a/arch/m68k/mac/debug.c b/arch/m68k/mac/debug.c
index 65dd77a742a3..bce074ceb768 100644
--- a/arch/m68k/mac/debug.c
+++ b/arch/m68k/mac/debug.c
@@ -27,7 +27,6 @@
 #include <asm/macints.h>
 
 extern unsigned long mac_videobase;
-extern unsigned long mac_videodepth;
 extern unsigned long mac_rowbytes;
 
 extern void mac_serial_print(const char *);
diff --git a/arch/m68k/mac/iop.c b/arch/m68k/mac/iop.c
index 326fb9978094..1ad4e9d80eba 100644
--- a/arch/m68k/mac/iop.c
+++ b/arch/m68k/mac/iop.c
@@ -305,14 +305,16 @@ void __init iop_register_interrupts(void)
 {
         if (iop_ism_present) {
                 if (oss_present) {
-                        request_irq(OSS_IRQLEV_IOPISM, iop_ism_irq,
+                        if (request_irq(OSS_IRQLEV_IOPISM, iop_ism_irq,
                                         IRQ_FLG_LOCK, "ISM IOP",
-                                        (void *) IOP_NUM_ISM);
+                                        (void *) IOP_NUM_ISM))
+                                pr_err("Couldn't register ISM IOP interrupt\n");
                         oss_irq_enable(IRQ_MAC_ADB);
                 } else {
-                        request_irq(IRQ_VIA2_0, iop_ism_irq,
+                        if (request_irq(IRQ_VIA2_0, iop_ism_irq,
                                         IRQ_FLG_LOCK|IRQ_FLG_FAST, "ISM IOP",
-                                        (void *) IOP_NUM_ISM);
+                                        (void *) IOP_NUM_ISM))
+                                pr_err("Couldn't register ISM IOP interrupt\n");
                 }
                 if (!iop_alive(iop_base[IOP_NUM_ISM])) {
                         printk("IOP: oh my god, they killed the ISM IOP!\n");
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index 82e560c076ce..23711074e0e2 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -134,6 +134,7 @@
 #include <asm/errno.h>
 #include <asm/macints.h>
 #include <asm/irq_regs.h>
+#include <asm/mac_oss.h>
 
 #define DEBUG_SPURIOUS
 #define SHUTUP_SONIC
@@ -146,7 +147,6 @@ static int scc_mask;
  * VIA/RBV hooks
  */
 
-extern void via_init(void);
 extern void via_register_interrupts(void);
 extern void via_irq_enable(int);
 extern void via_irq_disable(int);
@@ -157,9 +157,6 @@ extern int  via_irq_pending(int);
  * OSS hooks
  */
 
-extern int oss_present;
-
-extern void oss_init(void);
 extern void oss_register_interrupts(void);
 extern void oss_irq_enable(int);
 extern void oss_irq_disable(int);
@@ -170,9 +167,6 @@ extern int  oss_irq_pending(int);
  * PSC hooks
  */
 
-extern int psc_present;
-
-extern void psc_init(void);
 extern void psc_register_interrupts(void);
 extern void psc_irq_enable(int);
 extern void psc_irq_disable(int);
@@ -191,12 +185,10 @@ extern void iop_register_interrupts(void);
 
 extern int baboon_present;
 
-extern void baboon_init(void);
 extern void baboon_register_interrupts(void);
 extern void baboon_irq_enable(int);
 extern void baboon_irq_disable(int);
 extern void baboon_irq_clear(int);
-extern int  baboon_irq_pending(int);
 
 /*
  * SCC interrupt routines
@@ -258,8 +250,9 @@ void __init mac_init_IRQ(void)
         if (baboon_present)
                 baboon_register_interrupts();
         iop_register_interrupts();
-        request_irq(IRQ_AUTO_7, mac_nmi_handler, 0, "NMI",
-                        mac_nmi_handler);
+        if (request_irq(IRQ_AUTO_7, mac_nmi_handler, 0, "NMI",
+                        mac_nmi_handler))
+                pr_err("Couldn't register NMI\n");
 #ifdef DEBUG_MACINTS
         printk("mac_init_IRQ(): Done!\n");
 #endif
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index a44c7086ab39..5d818568b343 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -35,7 +35,6 @@
 
 #define RTC_OFFSET 2082844800
 
-extern struct mac_booter_data mac_bi_data;
 static void (*rom_reset)(void);
 
 #ifdef CONFIG_ADB_CUDA
diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c
index 8426501119ca..f3d23d6ebcf8 100644
--- a/arch/m68k/mac/oss.c
+++ b/arch/m68k/mac/oss.c
@@ -66,16 +66,21 @@ void __init oss_init(void)
 
 void __init oss_register_interrupts(void)
 {
-        request_irq(OSS_IRQLEV_SCSI, oss_irq, IRQ_FLG_LOCK,
-                        "scsi", (void *) oss);
-        request_irq(OSS_IRQLEV_IOPSCC, mac_scc_dispatch, IRQ_FLG_LOCK,
-                        "scc", mac_scc_dispatch);
-        request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, IRQ_FLG_LOCK,
-                        "nubus", (void *) oss);
-        request_irq(OSS_IRQLEV_SOUND, oss_irq, IRQ_FLG_LOCK,
-                        "sound", (void *) oss);
-        request_irq(OSS_IRQLEV_VIA1, via1_irq, IRQ_FLG_LOCK,
-                        "via1", (void *) via1);
+        if (request_irq(OSS_IRQLEV_SCSI, oss_irq, IRQ_FLG_LOCK,
+                        "scsi", (void *) oss))
+                pr_err("Couldn't register %s interrupt\n", "scsi");
+        if (request_irq(OSS_IRQLEV_IOPSCC, mac_scc_dispatch, IRQ_FLG_LOCK,
+                        "scc", mac_scc_dispatch))
+                pr_err("Couldn't register %s interrupt\n", "scc");
+        if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, IRQ_FLG_LOCK,
+                        "nubus", (void *) oss))
+                pr_err("Couldn't register %s interrupt\n", "nubus");
+        if (request_irq(OSS_IRQLEV_SOUND, oss_irq, IRQ_FLG_LOCK,
+                        "sound", (void *) oss))
+                pr_err("Couldn't register %s interrupt\n", "sound");
+        if (request_irq(OSS_IRQLEV_VIA1, via1_irq, IRQ_FLG_LOCK,
+                        "via1", (void *) via1))
+                pr_err("Couldn't register %s interrupt\n", "via1");
 }
 
 /*
diff --git a/arch/m68k/mac/psc.c b/arch/m68k/mac/psc.c
index f84a4dd64f94..ba6ccab64018 100644
--- a/arch/m68k/mac/psc.c
+++ b/arch/m68k/mac/psc.c
@@ -117,10 +117,14 @@ void __init psc_init(void)
 
 void __init psc_register_interrupts(void)
 {
-        request_irq(IRQ_AUTO_3, psc_irq, 0, "psc3", (void *) 0x30);
-        request_irq(IRQ_AUTO_4, psc_irq, 0, "psc4", (void *) 0x40);
-        request_irq(IRQ_AUTO_5, psc_irq, 0, "psc5", (void *) 0x50);
-        request_irq(IRQ_AUTO_6, psc_irq, 0, "psc6", (void *) 0x60);
+        if (request_irq(IRQ_AUTO_3, psc_irq, 0, "psc3", (void *) 0x30))
+                pr_err("Couldn't register psc%d interrupt\n", 3);
+        if (request_irq(IRQ_AUTO_4, psc_irq, 0, "psc4", (void *) 0x40))
+                pr_err("Couldn't register psc%d interrupt\n", 4);
+        if (request_irq(IRQ_AUTO_5, psc_irq, 0, "psc5", (void *) 0x50))
+                pr_err("Couldn't register psc%d interrupt\n", 5);
+        if (request_irq(IRQ_AUTO_6, psc_irq, 0, "psc6", (void *) 0x60))
+                pr_err("Couldn't register psc%d interrupt\n", 6);
 }
 
 /*
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index f01d418e64fe..7d97ba54536e 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -34,6 +34,7 @@
 #include <asm/macints.h>
 #include <asm/mac_via.h>
 #include <asm/mac_psc.h>
+#include <asm/mac_oss.h>
 
 volatile __u8 *via1, *via2;
 int rbv_present;
@@ -84,7 +85,6 @@ void via_irq_disable(int irq);
 void via_irq_clear(int irq);
 
 extern irqreturn_t mac_scc_dispatch(int, void *);
-extern int oss_present;
 
 /*
  * Initialize the VIAs
@@ -283,7 +283,8 @@ void __init via_init_clock(irq_handler_t func)
         via1[vT1CL] = MAC_CLOCK_LOW;
         via1[vT1CH] = MAC_CLOCK_HIGH;
 
-        request_irq(IRQ_MAC_TIMER_1, func, IRQ_FLG_LOCK, "timer", func);
+        if (request_irq(IRQ_MAC_TIMER_1, func, IRQ_FLG_LOCK, "timer", func))
+                pr_err("Couldn't register %s interrupt\n", "timer");
 }
 
 /*
@@ -293,25 +294,31 @@ void __init via_init_clock(irq_handler_t func)
 void __init via_register_interrupts(void)
 {
         if (via_alt_mapping) {
-                request_irq(IRQ_AUTO_1, via1_irq,
+                if (request_irq(IRQ_AUTO_1, via1_irq,
                                 IRQ_FLG_LOCK|IRQ_FLG_FAST, "software",
-                                (void *) via1);
-                request_irq(IRQ_AUTO_6, via1_irq,
+                                (void *) via1))
+                        pr_err("Couldn't register %s interrupt\n", "software");
+                if (request_irq(IRQ_AUTO_6, via1_irq,
                                 IRQ_FLG_LOCK|IRQ_FLG_FAST, "via1",
-                                (void *) via1);
+                                (void *) via1))
+                        pr_err("Couldn't register %s interrupt\n", "via1");
         } else {
-                request_irq(IRQ_AUTO_1, via1_irq,
+                if (request_irq(IRQ_AUTO_1, via1_irq,
                                 IRQ_FLG_LOCK|IRQ_FLG_FAST, "via1",
-                                (void *) via1);
+                                (void *) via1))
+                        pr_err("Couldn't register %s interrupt\n", "via1");
         }
-        request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
-                        "via2", (void *) via2);
+        if (request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
+                        "via2", (void *) via2))
+                pr_err("Couldn't register %s interrupt\n", "via2");
         if (!psc_present) {
-                request_irq(IRQ_AUTO_4, mac_scc_dispatch, IRQ_FLG_LOCK,
-                                "scc", mac_scc_dispatch);
+                if (request_irq(IRQ_AUTO_4, mac_scc_dispatch, IRQ_FLG_LOCK,
+                                "scc", mac_scc_dispatch))
+                        pr_err("Couldn't register %s interrupt\n", "scc");
         }
-        request_irq(IRQ_MAC_NUBUS, via_nubus_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
-                        "nubus", (void *) via2);
+        if (request_irq(IRQ_MAC_NUBUS, via_nubus_irq,
+                        IRQ_FLG_LOCK|IRQ_FLG_FAST, "nubus", (void *) via2))
+                pr_err("Couldn't register %s interrupt\n", "nubus");
 }
 
 /*
diff --git a/arch/m68k/math-emu/fp_log.c b/arch/m68k/math-emu/fp_log.c
index b1033ae0d6f0..367ecee2f981 100644
--- a/arch/m68k/math-emu/fp_log.c
+++ b/arch/m68k/math-emu/fp_log.c
@@ -24,7 +24,6 @@ static const struct fp_ext fp_one =
 
 extern struct fp_ext *fp_fadd(struct fp_ext *dest, const struct fp_ext *src);
 extern struct fp_ext *fp_fdiv(struct fp_ext *dest, const struct fp_ext *src);
-extern struct fp_ext *fp_fmul(struct fp_ext *dest, const struct fp_ext *src);
 
 struct fp_ext *
 fp_fsqrt(struct fp_ext *dest, struct fp_ext *src)
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index 81bb08ceec18..0007b2adf3a3 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -28,6 +28,7 @@
 #ifdef CONFIG_ATARI
 #include <asm/atari_stram.h>
 #endif
+#include <asm/sections.h>
 #include <asm/tlb.h>
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@@ -73,9 +74,6 @@ extern void init_pointer_table(unsigned long ptable);
 
 /* References to section boundaries */
 
-extern char _text[], _etext[];
-extern char __init_begin[], __init_end[];
-
 extern pmd_t *zero_pgtable;
 
 void __init mem_init(void)
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index c5dbb9bdb322..4665fc84b7dc 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -30,6 +30,7 @@
 #ifdef CONFIG_ATARI
 #include <asm/atari_stram.h>
 #endif
+#include <asm/sections.h>
 
 #undef DEBUG
 
@@ -301,14 +302,12 @@ void __init paging_init(void)
         }
 }
 
-extern char __init_begin, __init_end;
-
 void free_initmem(void)
 {
         unsigned long addr;
 
-        addr = (unsigned long)&__init_begin;
-        for (; addr < (unsigned long)&__init_end; addr += PAGE_SIZE) {
+        addr = (unsigned long)__init_begin;
+        for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
                 virt_to_page(addr)->flags &= ~(1 << PG_reserved);
                 init_page_count(virt_to_page(addr));
                 free_page(addr);
diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
index 43cdf476ffab..100baaa692a1 100644
--- a/arch/m68k/mvme147/config.c
+++ b/arch/m68k/mvme147/config.c
@@ -42,7 +42,6 @@ extern unsigned long mvme147_gettimeoffset (void);
 extern int mvme147_hwclk (int, struct rtc_time *);
 extern int mvme147_set_clock_mmss (unsigned long);
 extern void mvme147_reset (void);
-extern void mvme147_waitbut(void);
 
 
 static int bcd2int (unsigned char b);
@@ -115,8 +114,9 @@ static irqreturn_t mvme147_timer_int (int irq, void *dev_id)
 void mvme147_sched_init (irq_handler_t timer_routine)
 {
         tick_handler = timer_routine;
-        request_irq (PCC_IRQ_TIMER1, mvme147_timer_int,
-                IRQ_FLG_REPLACE, "timer 1", NULL);
+        if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQ_FLG_REPLACE,
+                        "timer 1", NULL))
+                pr_err("Couldn't register timer interrupt\n");
 
         /* Init the clock with a value */
         /* our clock goes off every 6.25us */
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
index 1521826fc3c7..11edf61cc2c4 100644
--- a/arch/m68k/mvme16x/config.c
+++ b/arch/m68k/mvme16x/config.c
@@ -48,7 +48,6 @@ extern unsigned long mvme16x_gettimeoffset (void);
 extern int mvme16x_hwclk (int, struct rtc_time *);
 extern int mvme16x_set_clock_mmss (unsigned long);
 extern void mvme16x_reset (void);
-extern void mvme16x_waitbut(void);
 
 int bcd2int (unsigned char b);
 
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
index 7110546e3c00..31ab3f08bbda 100644
--- a/arch/m68k/q40/config.c
+++ b/arch/m68k/q40/config.c
@@ -36,7 +36,6 @@
 #include <asm/machdep.h>
 #include <asm/q40_master.h>
 
-extern irqreturn_t q40_process_int(int level, struct pt_regs *regs);
 extern void q40_init_IRQ(void);
 static void q40_get_model(char *model);
 extern void q40_sched_init(irq_handler_t handler);
@@ -47,8 +46,6 @@ static unsigned int q40_get_ss(void);
 static int q40_set_clock_mmss(unsigned long);
 static int q40_get_rtc_pll(struct rtc_pll_info *pll);
 static int q40_set_rtc_pll(struct rtc_pll_info *pll);
-extern void q40_waitbut(void);
-void q40_set_vectors(void);
 
 extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/);
 
diff --git a/arch/m68k/sun3/config.c b/arch/m68k/sun3/config.c
index 8dfaa201342e..2ca25bd01a96 100644
--- a/arch/m68k/sun3/config.c
+++ b/arch/m68k/sun3/config.c
@@ -27,23 +27,21 @@
 #include <asm/sun3mmu.h>
 #include <asm/rtc.h>
 #include <asm/machdep.h>
+#include <asm/idprom.h>
 #include <asm/intersil.h>
 #include <asm/irq.h>
+#include <asm/sections.h>
 #include <asm/segment.h>
 #include <asm/sun3ints.h>
 
-extern char _text, _end;
-
 char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
 
 extern unsigned long sun3_gettimeoffset(void);
 static void sun3_sched_init(irq_handler_t handler);
 extern void sun3_get_model (char* model);
-extern void idprom_init (void);
 extern int sun3_hwclk(int set, struct rtc_time *t);
 
 volatile char* clock_va;
-extern volatile unsigned char* sun3_intreg;
 extern unsigned long availmem;
 unsigned long num_pages;
 
@@ -149,7 +147,7 @@ void __init config_sun3(void)
         mach_halt            =  sun3_halt;
         mach_get_hardware_list = sun3_get_hardware_list;
 
-        memory_start = ((((int)&_end) + 0x2000) & ~0x1fff);
+        memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
 // PROM seems to want the last couple of physical pages. --m
         memory_end   = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
 
diff --git a/arch/m68k/sun3/mmu_emu.c b/arch/m68k/sun3/mmu_emu.c
index 60f9d4500d72..3cd19390aae5 100644
--- a/arch/m68k/sun3/mmu_emu.c
+++ b/arch/m68k/sun3/mmu_emu.c
@@ -27,7 +27,6 @@
 #include <asm/mmu_context.h>
 #include <asm/dvma.h>
 
-extern void prom_reboot (char *) __attribute__ ((__noreturn__));
 
 #undef DEBUG_MMU_EMU
 #define DEBUG_PROM_MAPS
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
index 7364cd67455e..ad90393a3361 100644
--- a/arch/m68k/sun3/sun3ints.c
+++ b/arch/m68k/sun3/sun3ints.c
@@ -105,7 +105,10 @@ void __init sun3_init_IRQ(void)
         m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
         m68k_setup_user_interrupt(VEC_USER, 128, NULL);
 
-        request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL);
-        request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL);
-        request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL);
+        if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
+                pr_err("Couldn't register %s interrupt\n", "int5");
+        if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL))
+                pr_err("Couldn't register %s interrupt\n", "int7");
+        if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
+                pr_err("Couldn't register %s interrupt\n", "vec255");
 }
diff --git a/arch/m68k/sun3x/config.c b/arch/m68k/sun3x/config.c
index 2b1ca2db070f..fc599fad4a54 100644
--- a/arch/m68k/sun3x/config.c
+++ b/arch/m68k/sun3x/config.c
@@ -23,7 +23,6 @@
 #include "time.h"
 
 volatile char *clock_va;
-extern volatile unsigned char *sun3_intreg;
 
 extern void sun3_get_model(char *model);