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

11 files changed, 38 insertions, 24 deletions

diff --git a/arch/microblaze/kernel/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
index 38e1a2e8ad0..aabd9e9423a 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 be9fecca4f9..af866a45012 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 cf7424a6bb8..153f57c57b6 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 4a740dfcf6d..a10bea119b9 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 3b6212bdc8d..4dcfccdbc36 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 62cc78993f4..4b0f0fdb9ca 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 436f26ccbfa..07d4fa339ed 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 3889cf45fa7..40d36931e36 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 529b0dbf4fe..3bb42ec924c 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 05a497eefd7..bdfa2f9f0c8 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 fbdc533c61e..293ef486013 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;
 }