12 files changed, 125 insertions, 122 deletions

diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
index d8e2674a1543..4a9f1ecefaf2 100644
--- a/arch/mips/kernel/binfmt_elfn32.c
+++ b/arch/mips/kernel/binfmt_elfn32.c
@@ -103,8 +103,9 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
 	 * one divide.
 	 */
 	u64 nsec = (u64)jiffies * TICK_NSEC;
-	value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &value->tv_usec);
-	value->tv_usec /= NSEC_PER_USEC;
+	long rem;
+	value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
+	value->tv_usec = rem / NSEC_PER_USEC;
 }
 
 #define ELF_CORE_EFLAGS EF_MIPS_ABI2
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
index cec5f327e360..e31813779895 100644
--- a/arch/mips/kernel/binfmt_elfo32.c
+++ b/arch/mips/kernel/binfmt_elfo32.c
@@ -105,8 +105,9 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
 	 * one divide.
 	 */
 	u64 nsec = (u64)jiffies * TICK_NSEC;
-	value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &value->tv_usec);
-	value->tv_usec /= NSEC_PER_USEC;
+	long rem;
+	value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
+	value->tv_usec = rem / NSEC_PER_USEC;
 }
 
 #undef ELF_CORE_COPY_REGS
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 60353f5acc48..e00e5f6e7fdd 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -161,60 +161,6 @@ out:
 	return error;
 }
 
-struct dirent32 {
-	unsigned int	d_ino;
-	unsigned int	d_off;
-	unsigned short	d_reclen;
-	char		d_name[NAME_MAX + 1];
-};
-
-static void
-xlate_dirent(void *dirent64, void *dirent32, long n)
-{
-	long off;
-	struct dirent *dirp;
-	struct dirent32 *dirp32;
-
-	off = 0;
-	while (off < n) {
-		dirp = (struct dirent *)(dirent64 + off);
-		dirp32 = (struct dirent32 *)(dirent32 + off);
-		off += dirp->d_reclen;
-		dirp32->d_ino = dirp->d_ino;
-		dirp32->d_off = (unsigned int)dirp->d_off;
-		dirp32->d_reclen = dirp->d_reclen;
-		strncpy(dirp32->d_name, dirp->d_name, dirp->d_reclen - ((3 * 4) + 2));
-	}
-	return;
-}
-
-asmlinkage long
-sys32_getdents(unsigned int fd, void * dirent32, unsigned int count)
-{
-	long n;
-	void *dirent64;
-
-	dirent64 = (void *)((unsigned long)(dirent32 + (sizeof(long) - 1)) & ~(sizeof(long) - 1));
-	if ((n = sys_getdents(fd, dirent64, count - (dirent64 - dirent32))) < 0)
-		return(n);
-	xlate_dirent(dirent64, dirent32, n);
-	return(n);
-}
-
-asmlinkage int old_readdir(unsigned int fd, void * dirent, unsigned int count);
-
-asmlinkage int
-sys32_readdir(unsigned int fd, void * dirent32, unsigned int count)
-{
-	int n;
-	struct dirent dirent64;
-
-	if ((n = old_readdir(fd, &dirent64, count)) < 0)
-		return(n);
-	xlate_dirent(&dirent64, dirent32, dirent64.d_reclen);
-	return(n);
-}
-
 asmlinkage int
 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
 {
@@ -230,6 +176,9 @@ sysn32_waitid(int which, compat_pid_t pid,
 	long ret;
 	mm_segment_t old_fs = get_fs();
 
+	if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
+		return -EFAULT;
+
 	set_fs (KERNEL_DS);
 	ret = sys_waitid(which, pid, uinfo, options,
 			 uru ? (struct rusage __user *) &ru : NULL);
@@ -1450,25 +1399,6 @@ sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *ti
 	return sys_timer_create(clock, p, timer_id);
 }
 
-asmlinkage long
-sysn32_rt_sigtimedwait(const sigset_t __user *uthese,
-		       siginfo_t __user *uinfo,
-		       const struct compat_timespec __user *uts32,
-		       size_t sigsetsize)
-{
-	struct timespec __user *uts = NULL;
-
-	if (uts32) {
-		struct timespec ts;
-		uts = compat_alloc_user_space(sizeof(struct timespec));
-		if (get_user(ts.tv_sec, &uts32->tv_sec) ||
-		    get_user(ts.tv_nsec, &uts32->tv_nsec) ||
-		    copy_to_user (uts, &ts, sizeof (ts)))
-			return -EFAULT;
-	}
-	return sys_rt_sigtimedwait(uthese, uinfo, uts, sigsetsize);
-}
-
 save_static_function(sys32_clone);
 __attribute_used__ noinline static int
 _sys32_clone(nabi_no_regargs struct pt_regs regs)
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index d83e033dbc87..2f2dc54b2e26 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -626,7 +626,7 @@ einval:	li	v0, -EINVAL
 	sys	sys_fstatat64		4
 	sys	sys_unlinkat		3
 	sys	sys_renameat		4	/* 4295 */
-	sys	sys_linkat		4
+	sys	sys_linkat		5
 	sys	sys_symlinkat		3
 	sys	sys_readlinkat		4
 	sys	sys_fchmodat		3
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index bc4980cefc8b..02c8267e45e7 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -195,7 +195,7 @@ EXPORT(sysn32_call_table)
 	PTR	sys_fdatasync
 	PTR	sys_truncate
 	PTR	sys_ftruncate			/* 6075 */
-	PTR	sys32_getdents
+	PTR	compat_sys_getdents
 	PTR	sys_getcwd
 	PTR	sys_chdir
 	PTR	sys_fchdir
@@ -245,9 +245,9 @@ EXPORT(sysn32_call_table)
 	PTR	sys_capget
 	PTR	sys_capset
 	PTR	sys32_rt_sigpending		/* 6125 */
-	PTR	sysn32_rt_sigtimedwait
+	PTR	compat_sys_rt_sigtimedwait
 	PTR	sys_rt_sigqueueinfo
-	PTR	sys32_rt_sigsuspend
+	PTR	sysn32_rt_sigsuspend
 	PTR	sys32_sigaltstack
 	PTR	compat_sys_utime		/* 6130 */
 	PTR	sys_mknod
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 5b0414018c9a..797e0d874889 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -293,7 +293,7 @@ sys_call_table:
 	PTR	sys_uselib
 	PTR	sys_swapon
 	PTR	sys_reboot
-	PTR	sys32_readdir
+	PTR	compat_sys_old_readdir
 	PTR	old_mmap			/* 4090 */
 	PTR	sys_munmap
 	PTR	sys_truncate
@@ -345,7 +345,7 @@ sys_call_table:
 	PTR	sys_setfsuid
 	PTR	sys_setfsgid
 	PTR	sys32_llseek			/* 4140 */
-	PTR	sys32_getdents
+	PTR	compat_sys_getdents
 	PTR	compat_sys_select
 	PTR	sys_flock
 	PTR	sys_msync
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index d86affa21278..d9293c558e41 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -540,6 +540,9 @@ void __init setup_arch(char **cmdline_p)
 	sparse_init();
 	paging_init();
 	resource_init();
+#ifdef CONFIG_SMP
+	plat_smp_setup();
+#endif
 }
 
 int __init fpu_disable(char *s)
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 8a8b8dd90417..237cd8a2cd32 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -4,7 +4,7 @@
  * for more details.
  *
  * Copyright (C) 1991, 1992  Linus Torvalds
- * Copyright (C) 1994 - 2000  Ralf Baechle
+ * Copyright (C) 1994 - 2000, 2006  Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  */
 #include <linux/cache.h>
@@ -106,8 +106,6 @@ typedef struct compat_siginfo {
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
-
 /* 32-bit compatibility types */
 
 #define _NSIG_BPW32	32
@@ -198,7 +196,7 @@ __attribute_used__ noinline static int
 _sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
 	compat_sigset_t *uset;
-	sigset_t newset, saveset;
+	sigset_t newset;
 
 	uset = (compat_sigset_t *) regs.regs[4];
 	if (get_sigset(&newset, uset))
@@ -206,19 +204,15 @@ _sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal32(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 
 save_static_function(sys32_rt_sigsuspend);
@@ -226,8 +220,8 @@ __attribute_used__ noinline static int
 _sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
 	compat_sigset_t *uset;
-	sigset_t newset, saveset;
-        size_t sigsetsize;
+	sigset_t newset;
+	size_t sigsetsize;
 
 	/* XXX Don't preclude handling different sized sigset_t's.  */
 	sigsetsize = regs.regs[5];
@@ -240,19 +234,15 @@ _sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
         recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal32(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 
 asmlinkage int sys32_sigaction(int sig, const struct sigaction32 *act,
@@ -783,7 +773,7 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 		regs->regs[2] = EINTR;
 		break;
 	case ERESTARTSYS:
-		if(!(ka->sa.sa_flags & SA_RESTART)) {
+		if (!(ka->sa.sa_flags & SA_RESTART)) {
 			regs->regs[2] = EINTR;
 			break;
 		}
@@ -810,9 +800,10 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 	return ret;
 }
 
-int do_signal32(sigset_t *oldset, struct pt_regs *regs)
+void do_signal32(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
+	sigset_t *oldset;
 	siginfo_t info;
 	int signr;
 
@@ -822,17 +813,30 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
 	 * if so.
 	 */
 	if (!user_mode(regs))
-		return 1;
+		return;
 
 	if (try_to_freeze())
 		goto no_signal;
 
-	if (!oldset)
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else
 		oldset = &current->blocked;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0)
-		return handle_signal(signr, &info, &ka, oldset, regs);
+	if (signr > 0) {
+		/* Whee! Actually deliver the signal. */
+		if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+			/*
+			* A signal was successfully delivered; the saved
+			* sigmask will have been stored in the signal frame,
+			* and will be restored by sigreturn, so we can simply
+			* clear the TIF_RESTORE_SIGMASK flag.
+			*/
+			if (test_thread_flag(TIF_RESTORE_SIGMASK))
+				clear_thread_flag(TIF_RESTORE_SIGMASK);
+		}
+	}
 
 no_signal:
 	/*
@@ -853,7 +857,15 @@ no_signal:
 			regs->cp0_epc -= 4;
 		}
 	}
-	return 0;
+
+	/*
+	* If there's no signal to deliver, we just put the saved sigmask
+	* back
+	*/
+	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
 }
 
 asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 *act,
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index 5a3776096f07..3e168c08a3a8 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -81,6 +81,39 @@ struct rt_sigframe_n32 {
 #endif
 };
 
+extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
+
+save_static_function(sysn32_rt_sigsuspend);
+__attribute_used__ noinline static int
+_sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
+{
+	compat_sigset_t __user *unewset, uset;
+	size_t sigsetsize;
+	sigset_t newset;
+
+	/* XXX Don't preclude handling different sized sigset_t's.  */
+	sigsetsize = regs.regs[5];
+	if (sigsetsize != sizeof(sigset_t))
+		return -EINVAL;
+
+	unewset = (compat_sigset_t __user *) regs.regs[4];
+	if (copy_from_user(&uset, unewset, sizeof(uset)))
+		return -EFAULT;
+	sigset_from_compat (&newset, &uset);
+	sigdelsetmask(&newset, ~_BLOCKABLE);
+
+	spin_lock_irq(&current->sighand->siglock);
+	current->saved_sigmask = current->blocked;
+	current->blocked = newset;
+        recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
+}
+
 save_static_function(sysn32_rt_sigreturn);
 __attribute_used__ noinline static void
 _sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 25472fcaf715..06ed90752424 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -29,6 +29,7 @@
 #include <linux/timex.h>
 #include <linux/sched.h>
 #include <linux/cpumask.h>
+#include <linux/cpu.h>
 
 #include <asm/atomic.h>
 #include <asm/cpu.h>
@@ -235,7 +236,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	init_new_context(current, &init_mm);
 	current_thread_info()->cpu = 0;
 	smp_tune_scheduling();
-	prom_prepare_cpus(max_cpus);
+	plat_prepare_cpus(max_cpus);
 }
 
 /* preload SMP state for boot cpu */
@@ -424,6 +425,25 @@ void flush_tlb_one(unsigned long vaddr)
 	local_flush_tlb_one(vaddr);
 }
 
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+	int cpu;
+	int ret;
+
+	for_each_cpu(cpu) {
+		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+		if (ret)
+			printk(KERN_WARNING "topology_init: register_cpu %d "
+			       "failed (%d)\n", cpu, ret);
+	}
+
+	return 0;
+}
+
+subsys_initcall(topology_init);
+
 EXPORT_SYMBOL(flush_tlb_page);
 EXPORT_SYMBOL(flush_tlb_one);
 EXPORT_SYMBOL(cpu_data);
diff --git a/arch/mips/kernel/smp_mt.c b/arch/mips/kernel/smp_mt.c
index c930364830d0..993b8bf56aaf 100644
--- a/arch/mips/kernel/smp_mt.c
+++ b/arch/mips/kernel/smp_mt.c
@@ -143,7 +143,7 @@ static struct irqaction irq_call = {
  * Make sure all CPU's are in a sensible state before we boot any of the
  * secondarys
  */
-void prom_prepare_cpus(unsigned int max_cpus)
+void plat_smp_setup(void)
 {
 	unsigned long val;
 	int i, num;
@@ -179,11 +179,9 @@ void prom_prepare_cpus(unsigned int max_cpus)
 				write_vpe_c0_vpeconf0(tmp);
 
 				/* Record this as available CPU */
-				if (i < max_cpus) {
-					cpu_set(i, phys_cpu_present_map);
-					__cpu_number_map[i]	= ++num;
-					__cpu_logical_map[num]	= i;
-				}
+				cpu_set(i, phys_cpu_present_map);
+				__cpu_number_map[i]	= ++num;
+				__cpu_logical_map[num]	= i;
 			}
 
 			/* disable multi-threading with TC's */
@@ -241,7 +239,10 @@ void prom_prepare_cpus(unsigned int max_cpus)
 		set_vi_handler (MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
 		set_vi_handler (MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
 	}
+}
 
+void __init plat_prepare_cpus(unsigned int max_cpus)
+{
 	cpu_ipi_resched_irq = MIPSCPU_INT_BASE + MIPS_CPU_IPI_RESCHED_IRQ;
 	cpu_ipi_call_irq = MIPSCPU_INT_BASE + MIPS_CPU_IPI_CALL_IRQ;
 
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index c9d2b5147ca3..005debbfbe84 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1994 - 1999, 2000, 01 Ralf Baechle
+ * Copyright (C) 1994 - 1999, 2000, 01, 06 Ralf Baechle
  * Copyright (C) 1995, 1996 Paul M. Antoine
  * Copyright (C) 1998 Ulf Carlsson
  * Copyright (C) 1999 Silicon Graphics, Inc.
@@ -548,6 +548,8 @@ asmlinkage void do_ov(struct pt_regs *regs)
 {
 	siginfo_t info;
 
+	die_if_kernel("Integer overflow", regs);
+
 	info.si_code = FPE_INTOVF;
 	info.si_signo = SIGFPE;
 	info.si_errno = 0;