Merge with /home/shaggy/git/linus-clean/

6 files changed, 49 insertions, 57 deletions

diff --git a/arch/m32r/Makefile b/arch/m32r/Makefile
index 983d438b14b..4b3c90ba926 100644
--- a/arch/m32r/Makefile
+++ b/arch/m32r/Makefile
@@ -12,14 +12,14 @@ CFLAGS_MODULE += -mmodel=large
 
 ifdef CONFIG_CHIP_VDEC2
 cflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -Wa,-bitinst
-aflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -Wa,-bitinst
+aflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -O2 -Wa,-bitinst -Wa,-no-parallel
 else
 cflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -m32r2
-aflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -m32r2
+aflags-$(CONFIG_ISA_M32R2)	+= -DNO_FPU -m32r2 -O2
 endif
 
 cflags-$(CONFIG_ISA_M32R)	+= -DNO_FPU
-aflags-$(CONFIG_ISA_M32R)	+= -DNO_FPU -Wa,-no-bitinst
+aflags-$(CONFIG_ISA_M32R)	+= -DNO_FPU -O2 -Wa,-no-bitinst
 
 CFLAGS += $(cflags-y)
 AFLAGS += $(aflags-y)
diff --git a/arch/m32r/kernel/m32r_ksyms.c b/arch/m32r/kernel/m32r_ksyms.c
index dbc8a392105..be8b711367e 100644
--- a/arch/m32r/kernel/m32r_ksyms.c
+++ b/arch/m32r/kernel/m32r_ksyms.c
@@ -18,11 +18,6 @@
 #include <asm/irq.h>
 #include <asm/tlbflush.h>
 
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
-extern struct drive_info_struct drive_info;
-EXPORT_SYMBOL(drive_info);
-#endif
-
 /* platform dependent support */
 EXPORT_SYMBOL(boot_cpu_data);
 EXPORT_SYMBOL(dump_fpu);
diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
index c2e4dccf011..d742037a7cc 100644
--- a/arch/m32r/kernel/setup.c
+++ b/arch/m32r/kernel/setup.c
@@ -37,12 +37,6 @@
 extern void init_mmu(void);
 #endif
 
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD)	\
-	|| defined(CONFIG_BLK_DEV_IDE_MODULE)			\
-	|| defined(CONFIG_BLK_DEV_HD_MODULE)
-struct drive_info_struct { char dummy[32]; } drive_info;
-#endif
-
 extern char _end[];
 
 /*
diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
index 71763f7a1d1..cb33097fefc 100644
--- a/arch/m32r/kernel/signal.c
+++ b/arch/m32r/kernel/signal.c
@@ -36,7 +36,7 @@ int do_signal(struct pt_regs *, sigset_t *);
 asmlinkage int
 sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize,
 		  unsigned long r2, unsigned long r3, unsigned long r4,
-		  unsigned long r5, unsigned long r6, struct pt_regs regs)
+		  unsigned long r5, unsigned long r6, struct pt_regs *regs)
 {
 	sigset_t saveset, newset;
 
@@ -54,21 +54,21 @@ sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize,
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.r0 = -EINTR;
+	regs->r0 = -EINTR;
 	while (1) {
 		current->state = TASK_INTERRUPTIBLE;
 		schedule();
-		if (do_signal(&regs, &saveset))
-			return regs.r0;
+		if (do_signal(regs, &saveset))
+			return regs->r0;
 	}
 }
 
 asmlinkage int
 sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
 		unsigned long r2, unsigned long r3, unsigned long r4,
-		unsigned long r5, unsigned long r6, struct pt_regs regs)
+		unsigned long r5, unsigned long r6, struct pt_regs *regs)
 {
-	return do_sigaltstack(uss, uoss, regs.spu);
+	return do_sigaltstack(uss, uoss, regs->spu);
 }
 
 
@@ -140,11 +140,10 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
 asmlinkage int
 sys_rt_sigreturn(unsigned long r0, unsigned long r1,
 		 unsigned long r2, unsigned long r3, unsigned long r4,
-		 unsigned long r5, unsigned long r6, struct pt_regs regs)
+		 unsigned long r5, unsigned long r6, struct pt_regs *regs)
 {
-	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs.spu;
+	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->spu;
 	sigset_t set;
-	stack_t st;
 	int result;
 
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
@@ -158,14 +157,11 @@ sys_rt_sigreturn(unsigned long r0, unsigned long r1,
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	if (restore_sigcontext(&regs, &frame->uc.uc_mcontext, &result))
+	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &result))
 		goto badframe;
 
-	if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->spu) == -EFAULT)
 		goto badframe;
-	/* It is more difficult to avoid calling this function than to
-	   call it and ignore errors.  */
-	do_sigaltstack(&st, NULL, regs.spu);
 
 	return result;
 
diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c
index fe55b28d372..670cb49210a 100644
--- a/arch/m32r/kernel/sys_m32r.c
+++ b/arch/m32r/kernel/sys_m32r.c
@@ -29,28 +29,7 @@
 
 /*
  * sys_tas() - test-and-set
- * linuxthreads testing version
  */
-#ifndef CONFIG_SMP
-asmlinkage int sys_tas(int *addr)
-{
-	int oldval;
-	unsigned long flags;
-
-	if (!access_ok(VERIFY_WRITE, addr, sizeof (int)))
-		return -EFAULT;
-	local_irq_save(flags);
-	oldval = *addr;
-	if (!oldval)
-		*addr = 1;
-	local_irq_restore(flags);
-	return oldval;
-}
-#else /* CONFIG_SMP */
-#include <linux/spinlock.h>
-
-static DEFINE_SPINLOCK(tas_lock);
-
 asmlinkage int sys_tas(int *addr)
 {
 	int oldval;
@@ -58,15 +37,43 @@ asmlinkage int sys_tas(int *addr)
 	if (!access_ok(VERIFY_WRITE, addr, sizeof (int)))
 		return -EFAULT;
 
-	_raw_spin_lock(&tas_lock);
-	oldval = *addr;
-	if (!oldval)
-		*addr = 1;
-	_raw_spin_unlock(&tas_lock);
+	/* atomic operation:
+	 *   oldval = *addr; *addr = 1;
+	 */
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "r4", "%1")
+		"	.fillinsn\n"
+		"1:\n"
+		"	lock	%0, @%1	    ->	unlock	%2, @%1\n"
+		"2:\n"
+		/* NOTE:
+		 *   The m32r processor can accept interrupts only
+		 *   at the 32-bit instruction boundary.
+		 *   So, in the above code, the "unlock" instruction
+		 *   can be executed continuously after the "lock"
+		 *   instruction execution without any interruptions.
+		 */
+		".section .fixup,\"ax\"\n"
+		"	.balign 4\n"
+		"3:	ldi	%0, #%3\n"
+		"	seth	r14, #high(2b)\n"
+		"	or3	r14, r14, #low(2b)\n"
+		"	jmp	r14\n"
+		".previous\n"
+		".section __ex_table,\"a\"\n"
+		"	.balign 4\n"
+		"	.long 1b,3b\n"
+		".previous\n"
+		: "=&r" (oldval)
+		: "r" (addr), "r" (1), "i"(-EFAULT)
+		: "r14", "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+		  , "r4"
+#endif /* CONFIG_CHIP_M32700_TS1 */
+	);
 
 	return oldval;
 }
-#endif /* CONFIG_SMP */
 
 /*
  * sys_pipe() is the normal C calling standard for creating
diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c
index ce16bbe26a5..2d1dd2106c4 100644
--- a/arch/m32r/lib/usercopy.c
+++ b/arch/m32r/lib/usercopy.c
@@ -64,7 +64,7 @@ do {									\
 		"	.balign 4\n"					\
 		"	.long 0b,3b\n"					\
 		".previous"						\
-		: "=r"(res), "=r"(count), "=&r" (__d0), "=&r" (__d1),	\
+		: "=&r"(res), "=&r"(count), "=&r" (__d0), "=&r" (__d1),	\
 		  "=&r" (__d2)						\
 		: "i"(-EFAULT), "0"(count), "1"(count), "3"(src), 	\
 		  "4"(dst)						\
@@ -101,7 +101,7 @@ do {									\
 		"	.balign 4\n"					\
 		"	.long 0b,3b\n"					\
 		".previous"						\
-		: "=r"(res), "=r"(count), "=&r" (__d0), "=&r" (__d1),	\
+		: "=&r"(res), "=&r"(count), "=&r" (__d0), "=&r" (__d1),	\
 		  "=&r" (__d2)						\
 		: "i"(-EFAULT), "0"(count), "1"(count), "3"(src),	\
 		  "4"(dst)						\