Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: add parameter to microblaze_read()
  microblaze: Use CFLAGS_KERNEL instead of CFLAGS
  microblaze: Add STATE_SAVE_ARG_SPACE for noMMU kernel too
  microblaze: Do not check use_dcache
  microblaze: Do not use PVR configuration for broken MB version
  microblaze: Fix USR1/2 pvr printing message
  microblaze: iowrite upon timeout
  microblaze: Correspond CONFIG...PCMP in Makefile/Kconfig
  microblaze: Remove redundant variable
  microblaze: Move start_thread to process.c
  microblaze: Add missing preadv and pwritev syscalls
  microblaze: Add missing declaration for die and _exception func
  microblaze: Remove sparse error in traps.c
  microblaze: Move task_pt_regs up
  microblaze: Rename kernel_mode to pt_mode in pt_regs
  microblaze: Remove uncache shadow condition
  microblaze: Remove while(1) loop from show_regs function
  microblaze: Remove unneded per cpu SYSCALL_SAVE variable

18 files changed, 60 insertions, 51 deletions

diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index 0dcbb9832974..aaadfa701da3 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -26,21 +26,19 @@ ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
 endif
 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
-CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP) += -mxl-pattern-compare
+CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
 
 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
 
 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
 # rather than bools y/n
-CFLAGS += $(CPUFLAGS-1)
-CFLAGS += $(CPUFLAGS-2)
 
 # r31 holds current when in kernel mode
-CFLAGS += -ffixed-r31
+CFLAGS_KERNEL += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
 
 LDFLAGS_BLOB := --format binary --oformat elf32-microblaze
 
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(CFLAGS_KERNEL) -print-libgcc-file-name)
 
 head-y          := arch/microblaze/kernel/head.o
 libs-y          += arch/microblaze/lib/ $(LIBGCC)
diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
index c4c64b43c074..c209c47509d5 100644
--- a/arch/microblaze/include/asm/cache.h
+++ b/arch/microblaze/include/asm/cache.h
@@ -37,9 +37,4 @@ void _invalidate_dcache(unsigned int addr);
 #define __disable_dcache()              _disable_dcache()
 #define __invalidate_dcache(addr)       _invalidate_dcache(addr)
 
-/* FIXME - I don't think this is right */
-#ifdef CONFIG_XILINX_UNCACHED_SHADOW
-#define UNCACHED_SHADOW_MASK (CONFIG_XILINX_ERAM_SIZE)
-#endif
-
 #endif /* _ASM_MICROBLAZE_CACHE_H */
diff --git a/arch/microblaze/include/asm/entry.h b/arch/microblaze/include/asm/entry.h
index 7f57e42ee467..e4c3aef884df 100644
--- a/arch/microblaze/include/asm/entry.h
+++ b/arch/microblaze/include/asm/entry.h
@@ -29,7 +29,9 @@ DECLARE_PER_CPU(unsigned int, KM); /* Kernel/user mode */
 DECLARE_PER_CPU(unsigned int, ENTRY_SP); /* Saved SP on kernel entry */
 DECLARE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */
 DECLARE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */
-DECLARE_PER_CPU(unsigned int, SYSCALL_SAVE); /* Saved syscall number */
 # endif /* __ASSEMBLY__ */
 
+/* noMMU hasn't any space for args */
+# define STATE_SAVE_ARG_SPACE   (0)
+
 #endif /* _ASM_MICROBLAZE_ENTRY_H */
diff --git a/arch/microblaze/include/asm/exceptions.h b/arch/microblaze/include/asm/exceptions.h
index 4cdd2159f470..24ca540e77c0 100644
--- a/arch/microblaze/include/asm/exceptions.h
+++ b/arch/microblaze/include/asm/exceptions.h
@@ -61,6 +61,9 @@
 asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
                                                         int fsr, int addr);
 
+void die(const char *str, struct pt_regs *fp, long err);
+void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);
+
 #if defined(CONFIG_XMON)
 extern void xmon(struct pt_regs *regs);
 extern int xmon_bpt(struct pt_regs *regs);
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index d8e15434ba21..9329029d2614 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -15,6 +15,8 @@
 #include <asm/setup.h>
 #include <asm/registers.h>
 #include <asm/segment.h>
+#include <asm/entry.h>
+#include <asm/current.h>
 
 # ifndef __ASSEMBLY__
 /* from kernel/cpu/mb.c */
@@ -26,6 +28,12 @@ extern const struct seq_operations cpuinfo_op;
 
 # endif /* __ASSEMBLY__ */
 
+#define task_pt_regs(tsk) \
+                (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
+
+/* Do necessary setup to start up a newly executed thread. */
+void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp);
+
 /*
  * User space process size: memory size
  *
@@ -55,16 +63,6 @@ struct task_struct;
 struct thread_struct { };
 # define INIT_THREAD    { }
 
-/* Do necessary setup to start up a newly executed thread. */
-static inline void start_thread(struct pt_regs *regs,
-                                unsigned long pc,
-                                unsigned long usp)
-{
-        regs->pc = pc;
-        regs->r1 = usp;
-        regs->kernel_mode = 0;
-}
-
 /* Free all resources held by a thread. */
 static inline void release_thread(struct task_struct *dead_task)
 {
@@ -84,9 +82,6 @@ extern unsigned long get_wchan(struct task_struct *p);
  */
 extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 
-# define task_pt_regs(tsk) \
-                (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
-
 # define KSTK_EIP(tsk)  (0)
 # define KSTK_ESP(tsk)  (0)
 
diff --git a/arch/microblaze/include/asm/ptrace.h b/arch/microblaze/include/asm/ptrace.h
index f1f03486428a..55015bce5e47 100644
--- a/arch/microblaze/include/asm/ptrace.h
+++ b/arch/microblaze/include/asm/ptrace.h
@@ -52,10 +52,10 @@ struct pt_regs {
         microblaze_reg_t ear;
         microblaze_reg_t esr;
         microblaze_reg_t fsr;
-        int kernel_mode;
+        int pt_mode;
 };
 
-#define kernel_mode(regs)               ((regs)->kernel_mode)
+#define kernel_mode(regs)               ((regs)->pt_mode)
 #define user_mode(regs)                 (!kernel_mode(regs))
 
 #define instruction_pointer(regs)       ((regs)->pc)
diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
index d9d3903fde3f..b5e2f5fa5c53 100644
--- a/arch/microblaze/include/asm/unistd.h
+++ b/arch/microblaze/include/asm/unistd.h
@@ -378,8 +378,10 @@
 #define __NR_sendmsg            360 /* new */
 #define __NR_recvmsg            361 /* new */
 #define __NR_accept04           362 /* new */
+#define __NR_preadv             363 /* new */
+#define __NR_pwritev            364 /* new */
 
-#define __NR_syscalls           363
+#define __NR_syscalls           365
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
diff --git a/arch/microblaze/kernel/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
index 38e1a2e8ad0c..aabd9e9423a6 100644
--- a/arch/microblaze/kernel/asm-offsets.c
+++ b/arch/microblaze/kernel/asm-offsets.c
@@ -57,7 +57,7 @@ int main(int argc, char *argv[])
         DEFINE(PT_R29, offsetof(struct pt_regs, r29));
         DEFINE(PT_R30, offsetof(struct pt_regs, r30));
         DEFINE(PT_R31, offsetof(struct pt_regs, r31));
-        DEFINE(PT_MODE, offsetof(struct pt_regs, kernel_mode));
+        DEFINE(PT_MODE, offsetof(struct pt_regs, pt_mode));
         BLANK();
 
         /* Magic offsets for PTRACE PEEK/POKE etc */
diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index be9fecca4f91..af866a450125 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -100,7 +100,6 @@ void _enable_dcache(void)
 
 void _disable_dcache(void)
 {
-        if (cpuinfo.use_dcache) {
 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
                 __asm__ __volatile__ ("                                 \
                                 msrclr  r0, %0;                         \
@@ -119,12 +118,10 @@ void _disable_dcache(void)
                                 : "i" (MSR_DCE)                 \
                                 : "memory", "r12");
 #endif
-        }
 }
 
 void _invalidate_dcache(unsigned int addr)
 {
-        if (cpuinfo.use_dcache)
                 __asm__ __volatile__ ("                                 \
                                 wdc     %0, r0"                         \
                                 :                                       \
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
index cf7424a6bb87..153f57c57b6d 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -30,6 +30,13 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
         int temp; /* for saving temp value */
         get_pvr(&pvr);
 
+        CI(ver_code, VERSION);
+        if (!ci->ver_code) {
+                printk(KERN_ERR "ERROR: MB has broken PVR regs "
+                                                "-> use DTS setting\n");
+                return;
+        }
+
         temp = PVR_USE_BARREL(pvr) | PVR_USE_MSR_INSTR(pvr) |\
                 PVR_USE_PCMP_INSTR(pvr) | PVR_USE_DIV(pvr);
         if (ci->use_instr != temp)
@@ -60,8 +67,6 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
 
         CI(mmu, USE_MMU);
 
-        CI(ver_code, VERSION);
-
         CI(use_icache, USE_ICACHE);
         CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
         CI(icache_write, ICACHE_ALLOW_WR);
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
index 4a740dfcf6da..a10bea119b94 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -71,7 +71,7 @@ void __init setup_cpuinfo(void)
                         __func__);
                 set_cpuinfo_static(&cpuinfo, cpu);
                 break;
-/* FIXME I found weird behavior with MB 7.00.a/b
+/* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
  * please do not use FULL PVR with MMU */
         case 1:
                 printk(KERN_INFO "%s: Using full CPU PVR support\n",
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 3b6212bdc8dc..4dcfccdbc364 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -115,8 +115,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
                         cpuinfo.hw_debug ? "yes" : "no");
 
         count += seq_printf(m,
-                        "PVR-USR1:\t%x\n"
-                        "PVR-USR2:\t%x\n",
+                        "PVR-USR1:\t%02x\n"
+                        "PVR-USR2:\t%08x\n",
                         cpuinfo.pvr_user1,
                         cpuinfo.pvr_user2);
 
diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
index 62cc78993f44..4b0f0fdb9ca0 100644
--- a/arch/microblaze/kernel/early_printk.c
+++ b/arch/microblaze/kernel/early_printk.c
@@ -36,7 +36,7 @@ static void early_printk_putc(char c)
 
         unsigned retries = 10000;
         /* read status bit - 0x8 offset */
-        while (retries-- && (in_be32(base_addr + 8) & (1 << 3)))
+        while (--retries && (in_be32(base_addr + 8) & (1 << 3)))
                 ;
 
         /* Only attempt the iowrite if we didn't timeout */
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 436f26ccbfa9..07d4fa339eda 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -18,7 +18,7 @@
 
 void show_regs(struct pt_regs *regs)
 {
-        printk(KERN_INFO " Registers dump: mode=%X\r\n", regs->kernel_mode);
+        printk(KERN_INFO " Registers dump: mode=%X\r\n", regs->pt_mode);
         printk(KERN_INFO " r1=%08lX, r2=%08lX, r3=%08lX, r4=%08lX\n",
                                 regs->r1, regs->r2, regs->r3, regs->r4);
         printk(KERN_INFO " r5=%08lX, r6=%08lX, r7=%08lX, r8=%08lX\n",
@@ -37,8 +37,6 @@ void show_regs(struct pt_regs *regs)
                                 regs->r29, regs->r30, regs->r31, regs->pc);
         printk(KERN_INFO " msr=%08lX, ear=%08lX, esr=%08lX, fsr=%08lX\n",
                                 regs->msr, regs->ear, regs->esr, regs->fsr);
-        while (1)
-                ;
 }
 
 void (*pm_idle)(void);
@@ -163,7 +161,6 @@ static void kernel_thread_helper(int (*fn)(void *), void *arg)
 int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
 {
         struct pt_regs regs;
-        int ret;
 
         memset(&regs, 0, sizeof(regs));
         /* store them in non-volatile registers */
@@ -171,12 +168,10 @@ int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
         regs.r6 = (unsigned long)arg;
         local_save_flags(regs.msr);
         regs.pc = (unsigned long)kernel_thread_helper;
-        regs.kernel_mode = 1;
+        regs.pt_mode = 1;
 
-        ret = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
+        return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
                         &regs, 0, NULL, NULL);
-
-        return ret;
 }
 
 unsigned long get_wchan(struct task_struct *p)
@@ -184,3 +179,12 @@ unsigned long get_wchan(struct task_struct *p)
 /* TBD (used by procfs) */
         return 0;
 }
+
+/* Set up a thread for executing a new program */
+void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp)
+{
+        set_fs(USER_DS);
+        regs->pc = pc;
+        regs->r1 = usp;
+        regs->pt_mode = 0;
+}
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 3889cf45fa71..40d36931e363 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -178,7 +178,9 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc, int *rval_p)
 
 asmlinkage int sys_sigreturn(struct pt_regs *regs)
 {
-        struct sigframe *frame = (struct sigframe *)regs->r1;
+        struct sigframe *frame =
+                        (struct sigframe *)(regs->r1 + STATE_SAVE_ARG_SPACE);
+
         sigset_t set;
         int rval;
 
@@ -209,7 +211,9 @@ badframe:
 
 asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
 {
-        struct rt_sigframe *frame = (struct rt_sigframe *)regs->r1;
+        struct rt_sigframe *frame =
+                        (struct rt_sigframe *)(regs->r1 + STATE_SAVE_ARG_SPACE);
+
         sigset_t set;
         stack_t st;
         int rval;
@@ -336,7 +340,8 @@ static void setup_frame(int sig, struct k_sigaction *ka,
                 goto give_sigsegv;
 
         /* Set up registers for signal handler */
-        regs->r1 = (unsigned long) frame;
+        regs->r1 = (unsigned long) frame - STATE_SAVE_ARG_SPACE;
+
         /* Signal handler args: */
         regs->r5 = signal; /* Arg 0: signum */
         regs->r6 = (unsigned long) &frame->sc; /* arg 1: sigcontext */
@@ -414,7 +419,8 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
                 goto give_sigsegv;
 
         /* Set up registers for signal handler */
-        regs->r1 = (unsigned long) frame;
+        regs->r1 = (unsigned long) frame - STATE_SAVE_ARG_SPACE;
+
         /* Signal handler args: */
         regs->r5 = signal; /* arg 0: signum */
         regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index 529b0dbf4fe9..3bb42ec924c2 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -363,3 +363,5 @@ ENTRY(sys_call_table)
         .long sys_sendmsg               /* 360 */
         .long sys_recvmsg
         .long sys_ni_syscall
+        .long sys_ni_syscall
+        .long sys_ni_syscall
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index 05a497eefd78..bdfa2f9f0c81 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -176,7 +176,7 @@ static __init void microblaze_clockevent_init(void)
         clockevents_register_device(&clockevent_microblaze_timer);
 }
 
-static cycle_t microblaze_read(void)
+static cycle_t microblaze_read(struct clocksource *cs)
 {
         /* reading actual value of timer 1 */
         return (cycle_t) (in_be32(TIMER_BASE + TCR1));
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index fbdc533c61e3..293ef486013a 100644
--- a/arch/microblaze/kernel/traps.c
+++ b/arch/microblaze/kernel/traps.c
@@ -34,7 +34,7 @@ static int kstack_depth_to_print = 24;
 
 static int __init kstack_setup(char *s)
 {
-        kstack_depth_to_print = strict_strtoul(s, 0, 0);
+        kstack_depth_to_print = strict_strtoul(s, 0, NULL);
 
         return 1;
 }