Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

12 files changed, 58 insertions, 92 deletions

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 5f68b220c26d..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)
 {
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index d87b5446fa13..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
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/smp.c b/arch/mips/kernel/smp.c
index 5e189862e523..06ed90752424 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -236,7 +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 */
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/pmc-sierra/yosemite/smp.c b/arch/mips/pmc-sierra/yosemite/smp.c
index 7f8fda962190..c197311e15d3 100644
--- a/arch/mips/pmc-sierra/yosemite/smp.c
+++ b/arch/mips/pmc-sierra/yosemite/smp.c
@@ -50,37 +50,25 @@ void __init prom_grab_secondary(void)
  * We don't want to start the secondary CPU yet nor do we have a nice probing
  * feature in PMON so we just assume presence of the secondary core.
  */
-static char maxcpus_string[] __initdata =
-        KERN_WARNING "max_cpus set to 0; using 1 instead\n";
-
-void __init prom_prepare_cpus(unsigned int max_cpus)
+void __init plat_smp_setup(void)
 {
-        int enabled = 0, i;
-
-        if (max_cpus == 0) {
-                printk(maxcpus_string);
-                max_cpus = 1;
-        }
+        int i;
 
         cpus_clear(phys_cpu_present_map);
 
         for (i = 0; i < 2; i++) {
-                if (i == max_cpus)
-                        break;
-
-                /*
-                 * The boot CPU
-                 */
                 cpu_set(i, phys_cpu_present_map);
                 __cpu_number_map[i]     = i;
                 __cpu_logical_map[i]    = i;
-                enabled++;
         }
+}
 
+void __init plat_prepare_cpus(unsigned int max_cpus)
+{
         /*
          * Be paranoid.  Enable the IPI only if we're really about to go SMP.
          */
-        if (enabled > 1)
+        if (cpus_weight(cpu_possible_map))
                 set_c0_status(STATUSF_IP5);
 }
 
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index dbef3f6b5650..09fa7f5216f0 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -140,7 +140,7 @@ static __init void intr_clear_all(nasid_t nasid)
                 REMOTE_HUB_CLR_INTR(nasid, i);
 }
 
-void __init prom_prepare_cpus(unsigned int max_cpus)
+void __init plat_smp_setup(void)
 {
         cnodeid_t       cnode;
 
@@ -161,6 +161,11 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
         alloc_cpupda(0, 0);
 }
 
+void __init plat_prepare_cpus(unsigned int max_cpus)
+{
+        /* We already did everything necessary earlier */
+}
+
 /*
  * Launch a slave into smp_bootstrap().  It doesn't take an argument, and we
  * set sp to the kernel stack of the newly created idle process, gp to the proc
diff --git a/arch/mips/sibyte/cfe/smp.c b/arch/mips/sibyte/cfe/smp.c
index 4477af3d8074..eab20e2db323 100644
--- a/arch/mips/sibyte/cfe/smp.c
+++ b/arch/mips/sibyte/cfe/smp.c
@@ -31,7 +31,7 @@
  *
  * Common setup before any secondaries are started
  */
-void __init prom_prepare_cpus(unsigned int max_cpus)
+void __init plat_smp_setup(void)
 {
         int i, num;
 
@@ -40,14 +40,18 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
         __cpu_number_map[0] = 0;
         __cpu_logical_map[0] = 0;
 
-        for (i=1, num=0; i<NR_CPUS; i++) {
+        for (i = 1, num = 0; i < NR_CPUS; i++) {
                 if (cfe_cpu_stop(i) == 0) {
                         cpu_set(i, phys_cpu_present_map);
                         __cpu_number_map[i] = ++num;
                         __cpu_logical_map[num] = i;
                 }
         }
-        printk("Detected %i available secondary CPU(s)\n", num);
+        printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
+}
+
+void __init plat_prepare_cpus(unsigned int max_cpus)
+{
 }
 
 /*
diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h
index 654b97d3e13a..2c8b853376c9 100644
--- a/include/asm-mips/atomic.h
+++ b/include/asm-mips/atomic.h
@@ -250,7 +250,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
                 "       subu    %0, %1, %3                              \n"
                 "       bltz    %0, 1f                                  \n"
                 "       sc      %0, %2                                  \n"
+                "       .set    noreorder                               \n"
                 "       beqzl   %0, 1b                                  \n"
+                "        subu   %0, %1, %3                              \n"
+                "       .set    reorder                                 \n"
                 "       sync                                            \n"
                 "1:                                                     \n"
                 "       .set    mips0                                   \n"
@@ -266,7 +269,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
                 "       subu    %0, %1, %3                              \n"
                 "       bltz    %0, 1f                                  \n"
                 "       sc      %0, %2                                  \n"
+                "       .set    noreorder                               \n"
                 "       beqz    %0, 1b                                  \n"
+                "        subu   %0, %1, %3                              \n"
+                "       .set    reorder                                 \n"
                 "       sync                                            \n"
                 "1:                                                     \n"
                 "       .set    mips0                                   \n"
@@ -598,7 +604,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
                 "       dsubu   %0, %1, %3                              \n"
                 "       bltz    %0, 1f                                  \n"
                 "       scd     %0, %2                                  \n"
+                "       .set    noreorder                               \n"
                 "       beqzl   %0, 1b                                  \n"
+                "        dsubu  %0, %1, %3                              \n"
+                "       .set    reorder                                 \n"
                 "       sync                                            \n"
                 "1:                                                     \n"
                 "       .set    mips0                                   \n"
@@ -614,7 +623,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
                 "       dsubu   %0, %1, %3                              \n"
                 "       bltz    %0, 1f                                  \n"
                 "       scd     %0, %2                                  \n"
+                "       .set    noreorder                               \n"
                 "       beqz    %0, 1b                                  \n"
+                "        dsubu  %0, %1, %3                              \n"
+                "       .set    reorder                                 \n"
                 "       sync                                            \n"
                 "1:                                                     \n"
                 "       .set    mips0                                   \n"
diff --git a/include/asm-mips/smp.h b/include/asm-mips/smp.h
index 5618f1e12f40..75c6fe7c2126 100644
--- a/include/asm-mips/smp.h
+++ b/include/asm-mips/smp.h
@@ -58,7 +58,9 @@ static inline int num_booting_cpus(void)
         return cpus_weight(cpu_callout_map);
 }
 
-/* These are defined by the board-specific code. */
+/*
+ * These are defined by the board-specific code.
+ */
 
 /*
  * Cause the function described by call_data to be executed on the passed
@@ -79,7 +81,12 @@ extern void prom_boot_secondary(int cpu, struct task_struct *idle);
 extern void prom_init_secondary(void);
 
 /*
- * Detect available CPUs, populate phys_cpu_present_map before smp_init
+ * Populate cpu_possible_map before smp_init, called from setup_arch.
+ */
+extern void plat_smp_setup(void);
+
+/*
+ * Called after init_IRQ but before __cpu_up.
  */
 extern void prom_prepare_cpus(unsigned int max_cpus);
 
diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h
index e8e5d4143377..ddae9bae31af 100644
--- a/include/asm-mips/system.h
+++ b/include/asm-mips/system.h
@@ -322,7 +322,7 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old,
 #endif
                 "2:                                                     \n"
                 "       .set    pop                                     \n"
-                : "=&r" (retval), "=m" (*m)
+                : "=&r" (retval), "=R" (*m)
                 : "R" (*m), "Jr" (old), "Jr" (new)
                 : "memory");
         } else if (cpu_has_llsc) {
@@ -342,7 +342,7 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old,
 #endif
                 "2:                                                     \n"
                 "       .set    pop                                     \n"
-                : "=&r" (retval), "=m" (*m)
+                : "=&r" (retval), "=R" (*m)
                 : "R" (*m), "Jr" (old), "Jr" (new)
                 : "memory");
         } else {
@@ -379,7 +379,7 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old,
 #endif
                 "2:                                                     \n"
                 "       .set    pop                                     \n"
-                : "=&r" (retval), "=m" (*m)
+                : "=&r" (retval), "=R" (*m)
                 : "R" (*m), "Jr" (old), "Jr" (new)
                 : "memory");
         } else if (cpu_has_llsc) {
@@ -397,7 +397,7 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old,
 #endif
                 "2:                                                     \n"
                 "       .set    pop                                     \n"
-                : "=&r" (retval), "=m" (*m)
+                : "=&r" (retval), "=R" (*m)
                 : "R" (*m), "Jr" (old), "Jr" (new)
                 : "memory");
         } else {