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

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] IP27: Build fix
  [MIPS] Wire up ioprio_set and ioprio_get.
  [MIPS] Fix __raw_read_trylock() to allow multiple readers
  [MIPS] Export __copy_user_inatomic.
  [MIPS] R2 bitops compile fix for gcc < 4.0.
  [MIPS] TX39: Remove redundant tx39_blast_icache() calls
  [MIPS] Cobalt: Fix early printk
  [MIPS] SMTC: De-obscure Malta hooks.
  [MIPS] SMTC: Add fordward declarations for mm_struct and task_struct.
  [MIPS] SMTC: <asm/mips_mt.h> must include <linux/cpumask.h>
  [MIPS] SMTC: <asm/smtc_ipi.h> must include <linux/spinlock.h>
  [MIPS] Atlas, Malta: Fix build warning.

13 files changed, 28 insertions, 56 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4ec2dd5455f3..a1cd84f9b3bc 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -167,6 +167,7 @@ config MIPS_COBALT
         select IRQ_CPU
         select MIPS_GT64111
         select SYS_HAS_CPU_NEVADA
+        select SYS_HAS_EARLY_PRINTK
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
         select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -837,7 +838,6 @@ source "arch/mips/tx4927/Kconfig"
 source "arch/mips/tx4938/Kconfig"
 source "arch/mips/vr41xx/Kconfig"
 source "arch/mips/philips/pnx8550/common/Kconfig"
-source "arch/mips/cobalt/Kconfig"
 
 endmenu
 
diff --git a/arch/mips/cobalt/Kconfig b/arch/mips/cobalt/Kconfig
deleted file mode 100644
index 7c42b088d16c..000000000000
--- a/arch/mips/cobalt/Kconfig
+++ /dev/null
@@ -1,7 +0,0 @@
-config EARLY_PRINTK
-        bool "Early console support"
-        depends on MIPS_COBALT
-        help
-          Provide early console support by direct access to the
-          on board UART. The UART must have been previously
-          initialised by the boot loader.
diff --git a/arch/mips/cobalt/console.c b/arch/mips/cobalt/console.c
index fff20d28114f..ca56b415b8ac 100644
--- a/arch/mips/cobalt/console.c
+++ b/arch/mips/cobalt/console.c
@@ -9,11 +9,8 @@
 #include <asm/addrspace.h>
 #include <asm/mach-cobalt/cobalt.h>
 
-static void putchar(int c)
+void prom_putchar(char c)
 {
-        if(c == '\n')
-                putchar('\r');
-
         while(!(COBALT_UART[UART_LSR] & UART_LSR_THRE))
                 ;
 
diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c
index 2ef857c3ee53..225755d0c1f6 100644
--- a/arch/mips/kernel/mips_ksyms.c
+++ b/arch/mips/kernel/mips_ksyms.c
@@ -37,6 +37,7 @@ EXPORT_SYMBOL(kernel_thread);
  * Userspace access stuff.
  */
 EXPORT_SYMBOL(__copy_user);
+EXPORT_SYMBOL(__copy_user_inatomic);
 EXPORT_SYMBOL(__bzero);
 EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm);
 EXPORT_SYMBOL(__strncpy_from_user_asm);
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 7c0b3936ba44..0c9a9ff8cd25 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -656,6 +656,8 @@ einval:	li	v0, -EINVAL
         sys     sys_kexec_load          4
         sys     sys_getcpu              3
         sys     sys_epoll_pwait         6
+        sys     sys_ioprio_set          3
+        sys     sys_ioprio_get          2
         .endm
 
         /* We pre-compute the number of _instruction_ bytes needed to
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index e569b846e9a3..23f3b118f718 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -471,3 +471,6 @@ sys_call_table:
         PTR     sys_kexec_load                  /* 5270 */
         PTR     sys_getcpu
         PTR     sys_epoll_pwait
+        PTR     sys_ioprio_set
+        PTR     sys_ioprio_get
+        .size   sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index f17e31e3bff2..6eac28337423 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -395,5 +395,8 @@ EXPORT(sysn32_call_table)
         PTR     compat_sys_set_robust_list
         PTR     compat_sys_get_robust_list
         PTR     compat_sys_kexec_load
-        PTR     sys_getcpu
+        PTR     sys_getcpu                      /* 6275 */
         PTR     compat_sys_epoll_pwait
+        PTR     sys_ioprio_set
+        PTR     sys_ioprio_get
+        .size   sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 142c9b70c026..7e74b412a782 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -519,4 +519,6 @@ sys_call_table:
         PTR     compat_sys_kexec_load
         PTR     sys_getcpu
         PTR     compat_sys_epoll_pwait
+        PTR     sys_ioprio_set
+        PTR     sys_ioprio_get                  /* 4315 */
         .size   sys_call_table,.-sys_call_table
diff --git a/arch/mips/mips-boards/generic/init.c b/arch/mips/mips-boards/generic/init.c
index b11337600129..1acdf091c258 100644
--- a/arch/mips/mips-boards/generic/init.c
+++ b/arch/mips/mips-boards/generic/init.c
@@ -251,8 +251,6 @@ void __init mips_ejtag_setup (void)
 
 void __init prom_init(void)
 {
-        u32 start, map, mask, data;
-
         prom_argc = fw_arg0;
         _prom_argv = (int *) fw_arg1;
         _prom_envp = (int *) fw_arg2;
@@ -278,6 +276,8 @@ void __init prom_init(void)
                         mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC;
         }
         switch(mips_revision_corid) {
+                u32 start, map, mask, data;
+
         case MIPS_REVISION_CORID_QED_RM5261:
         case MIPS_REVISION_CORID_CORE_LV:
         case MIPS_REVISION_CORID_CORE_FPGA:
diff --git a/arch/mips/mips-boards/malta/Makefile b/arch/mips/mips-boards/malta/Makefile
index cb7f349b0514..377d9e8f250a 100644
--- a/arch/mips/mips-boards/malta/Makefile
+++ b/arch/mips/mips-boards/malta/Makefile
@@ -21,4 +21,4 @@
 
 obj-y := malta_int.o malta_setup.o
 obj-$(CONFIG_MTD) += malta_mtd.o
-obj-$(CONFIG_SMP) += malta_smp.o
+obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o
diff --git a/arch/mips/mips-boards/malta/malta_smp.c b/arch/mips/mips-boards/malta/malta_smtc.c
index cf967170fe29..d1c80f631100 100644
--- a/arch/mips/mips-boards/malta/malta_smp.c
+++ b/arch/mips/mips-boards/malta/malta_smtc.c
@@ -1,25 +1,14 @@
 /*
  * Malta Platform-specific hooks for SMP operation
  */
+#include <linux/init.h>
 
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/cpumask.h>
-#include <linux/interrupt.h>
-
-#include <asm/atomic.h>
-#include <asm/cpu.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/hardirq.h>
-#include <asm/mmu_context.h>
-#include <asm/smp.h>
-#ifdef CONFIG_MIPS_MT_SMTC
+#include <asm/mipsregs.h>
+#include <asm/mipsmtregs.h>
+#include <asm/smtc.h>
 #include <asm/smtc_ipi.h>
-#endif /* CONFIG_MIPS_MT_SMTC */
 
 /* VPE/SMP Prototype implements platform interfaces directly */
-#if !defined(CONFIG_MIPS_MT_SMP)
 
 /*
  * Cause the specified action to be performed on a targeted "CPU"
@@ -27,10 +16,8 @@
 
 void core_send_ipi(int cpu, unsigned int action)
 {
-/* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
-#ifdef CONFIG_MIPS_MT_SMTC
+        /* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
         smtc_send_ipi(cpu, LINUX_SMP_IPI, action);
-#endif /* CONFIG_MIPS_MT_SMTC */
 }
 
 /*
@@ -39,9 +26,7 @@ void core_send_ipi(int cpu, unsigned int action)
 
 void prom_boot_secondary(int cpu, struct task_struct *idle)
 {
-#ifdef CONFIG_MIPS_MT_SMTC
         smtc_boot_secondary(cpu, idle);
-#endif /* CONFIG_MIPS_MT_SMTC */
 }
 
 /*
@@ -50,7 +35,6 @@ void prom_boot_secondary(int cpu, struct task_struct *idle)
 
 void prom_init_secondary(void)
 {
-#ifdef CONFIG_MIPS_MT_SMTC
         void smtc_init_secondary(void);
         int myvpe;
 
@@ -65,7 +49,6 @@ void prom_init_secondary(void)
         }
 
         smtc_init_secondary();
-#endif /* CONFIG_MIPS_MT_SMTC */
 }
 
 /*
@@ -93,9 +76,7 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
 
 void prom_smp_finish(void)
 {
-#ifdef CONFIG_MIPS_MT_SMTC
         smtc_smp_finish();
-#endif /* CONFIG_MIPS_MT_SMTC */
 }
 
 /*
@@ -105,5 +86,3 @@ void prom_smp_finish(void)
 void prom_cpus_done(void)
 {
 }
-
-#endif /* CONFIG_MIPS32R2_MT_SMP */
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index f32ebde30ccf..560a6de96556 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -128,7 +128,6 @@ static inline void tx39_flush_cache_all(void)
                 return;
 
         tx39_blast_dcache();
-        tx39_blast_icache();
 }
 
 static inline void tx39___flush_cache_all(void)
@@ -142,24 +141,19 @@ static void tx39_flush_cache_mm(struct mm_struct *mm)
         if (!cpu_has_dc_aliases)
                 return;
 
-        if (cpu_context(smp_processor_id(), mm) != 0) {
-                tx39_flush_cache_all();
-        }
+        if (cpu_context(smp_processor_id(), mm) != 0)
+                tx39_blast_dcache();
 }
 
 static void tx39_flush_cache_range(struct vm_area_struct *vma,
         unsigned long start, unsigned long end)
 {
-        int exec;
-
+        if (!cpu_has_dc_aliases)
+                return;
         if (!(cpu_context(smp_processor_id(), vma->vm_mm)))
                 return;
 
-        exec = vma->vm_flags & VM_EXEC;
-        if (cpu_has_dc_aliases || exec)
-                tx39_blast_dcache();
-        if (exec)
-                tx39_blast_icache();
+        tx39_blast_dcache();
 }
 
 static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page, unsigned long pfn)
@@ -218,7 +212,7 @@ static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page
 
 static void local_tx39_flush_data_cache_page(void * addr)
 {
-        tx39_blast_dcache_page(addr);
+        tx39_blast_dcache_page((unsigned long)addr);
 }
 
 static void tx39_flush_data_cache_page(unsigned long addr)
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 9094baf31d0e..74158d349630 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -191,7 +191,6 @@ static inline void ioc3_eth_init(void)
         ioc3->eier = 0;
 }
 
-extern void ip27_setup_console(void);
 extern void ip27_time_init(void);
 extern void ip27_reboot_setup(void);
 
@@ -200,7 +199,6 @@ void __init plat_mem_setup(void)
         hubreg_t p, e, n_mode;
         nasid_t nid;
 
-        ip27_setup_console();
         ip27_reboot_setup();
 
         /*