Merge with http://kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

23 files changed, 178 insertions, 90 deletions

diff --git a/include/asm-mips/.gitignore b/include/asm-mips/.gitignore
new file mode 100644
index 000000000000..4ec57ad5bc3c
--- /dev/null
+++ b/include/asm-mips/.gitignore
@@ -0,0 +1 @@
+asm_offsets.h
diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h
index 6202eb8a14b7..55c37c106ef0 100644
--- a/include/asm-mips/atomic.h
+++ b/include/asm-mips/atomic.h
@@ -231,11 +231,12 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v)
 }
 
 /*
- * atomic_sub_if_positive - add integer to atomic variable
+ * atomic_sub_if_positive - conditionally subtract integer from atomic variable
+ * @i: integer value to subtract
  * @v: pointer of type atomic_t
  *
- * Atomically test @v and decrement if it is greater than 0.
- * The function returns the old value of @v minus 1.
+ * Atomically test @v and subtract @i if @v is greater or equal than @i.
+ * The function returns the old value of @v minus @i.
  */
 static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 {
@@ -287,6 +288,27 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 	return result;
 }
 
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic_inc_return(v) atomic_add_return(1,(v))
 
@@ -556,11 +578,12 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
 }
 
 /*
- * atomic64_sub_if_positive - add integer to atomic variable
+ * atomic64_sub_if_positive - conditionally subtract integer from atomic variable
+ * @i: integer value to subtract
  * @v: pointer of type atomic64_t
  *
- * Atomically test @v and decrement if it is greater than 0.
- * The function returns the old value of @v minus 1.
+ * Atomically test @v and subtract @i if @v is greater or equal than @i.
+ * The function returns the old value of @v minus @i.
  */
 static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
 {
diff --git a/include/asm-mips/delay.h b/include/asm-mips/delay.h
index 85435a8d4e52..48d00cccdafa 100644
--- a/include/asm-mips/delay.h
+++ b/include/asm-mips/delay.h
@@ -84,4 +84,13 @@ static inline void __udelay(unsigned long usecs, unsigned long lpj)
 
 #define udelay(usecs) __udelay((usecs),__udelay_val)
 
+/* make sure "usecs *= ..." in udelay do not overflow. */
+#if HZ >= 1000
+#define MAX_UDELAY_MS	1
+#elif HZ <= 200
+#define MAX_UDELAY_MS	5
+#else
+#define MAX_UDELAY_MS	(1000 / HZ)
+#endif
+
 #endif /* _ASM_DELAY_H */
diff --git a/include/asm-mips/elf.h b/include/asm-mips/elf.h
index 7420f12742bb..d2c9a25f8459 100644
--- a/include/asm-mips/elf.h
+++ b/include/asm-mips/elf.h
@@ -275,6 +275,8 @@ do {									\
 
 #endif /* CONFIG_64BIT */
 
+struct task_struct;
+
 extern void dump_regs(elf_greg_t *, struct pt_regs *regs);
 extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
 extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
diff --git a/include/asm-mips/errno.h b/include/asm-mips/errno.h
index 9d3e6e7cdb92..3c0d840e4577 100644
--- a/include/asm-mips/errno.h
+++ b/include/asm-mips/errno.h
@@ -119,10 +119,6 @@
 #define	EOWNERDEAD	165	/* Owner died */
 #define	ENOTRECOVERABLE	166	/* State not recoverable */
 
-/* for robust mutexes */
-#define	EOWNERDEAD	165	/* Owner died */
-#define	ENOTRECOVERABLE	166	/* State not recoverable */
-
 #define EDQUOT		1133	/* Quota exceeded */
 
 #ifdef __KERNEL__
diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index 3061870b7f6c..d42685747e7d 100644
--- a/include/asm-mips/io.h
+++ b/include/asm-mips/io.h
@@ -459,10 +459,10 @@ __BUILDIO(q, u64)
 
 #define __BUILD_MEMORY_STRING(bwlq, type)				\
 									\
-static inline void writes##bwlq(volatile void __iomem *mem, void *addr,	\
-				unsigned int count)			\
+static inline void writes##bwlq(volatile void __iomem *mem,		\
+				const void *addr, unsigned int count)	\
 {									\
-	volatile type *__addr = addr;					\
+	const volatile type *__addr = addr;				\
 									\
 	while (count--) {						\
 		mem_write##bwlq(*__addr, mem);				\
diff --git a/include/asm-mips/ip32/crime.h b/include/asm-mips/ip32/crime.h
index 152879bae20f..a13702fafa85 100644
--- a/include/asm-mips/ip32/crime.h
+++ b/include/asm-mips/ip32/crime.h
@@ -154,7 +154,7 @@ struct sgi_crime {
 #define CRIME_MEM_ERROR_ECC_REPL_MASK	0xffffffff
 };
 
-extern struct sgi_crime *crime;
+extern struct sgi_crime __iomem *crime;
 
 #define CRIME_HI_MEM_BASE	0x40000000	/* this is where whole 1G of RAM is mapped */
 
diff --git a/include/asm-mips/ip32/mace.h b/include/asm-mips/ip32/mace.h
index 432011b16c26..990082c81f39 100644
--- a/include/asm-mips/ip32/mace.h
+++ b/include/asm-mips/ip32/mace.h
@@ -147,6 +147,39 @@ struct mace_audio {
 	} chan[3];
 };
 
+
+/* register definitions for parallel port DMA */
+struct mace_parport {
+	/* 0 - do nothing,
+	 * 1 - pulse terminal count to the device after buffer is drained */
+#define MACEPAR_CONTEXT_LASTFLAG	BIT(63)
+	/* Should not cross 4K page boundary */
+#define MACEPAR_CONTEXT_DATA_BOUND	0x0000000000001000UL
+#define MACEPAR_CONTEXT_DATALEN_MASK	0x00000fff00000000UL
+#define MACEPAR_CONTEXT_DATALEN_SHIFT	32
+	/* Can be arbitrarily aligned on any byte boundary on output,
+	 * 64 byte aligned on input */
+#define MACEPAR_CONTEXT_BASEADDR_MASK	0x00000000ffffffffUL
+	volatile u64 context_a;
+	volatile u64 context_b;
+	/* 0 - mem->device, 1 - device->mem */
+#define MACEPAR_CTLSTAT_DIRECTION	BIT(0)
+	/* 0 - channel frozen, 1 - channel enabled */
+#define MACEPAR_CTLSTAT_ENABLE		BIT(1)
+	/* 0 - channel active, 1 - complete channel reset */
+#define MACEPAR_CTLSTAT_RESET		BIT(2)
+#define MACEPAR_CTLSTAT_CTXB_VALID	BIT(3)
+#define MACEPAR_CTLSTAT_CTXA_VALID	BIT(4)
+	volatile u64 cntlstat;		/* Control/Status register */
+#define MACEPAR_DIAG_CTXINUSE		BIT(0)
+	/* 1 - Dma engine is enabled and processing something */
+#define MACEPAR_DIAG_DMACTIVE		BIT(1)
+	/* Counter of bytes left */
+#define MACEPAR_DIAG_CTRMASK		0x0000000000003ffcUL
+#define MACEPAR_DIAG_CTRSHIFT		2
+	volatile u64 diagnostic;	/* RO: diagnostic register */
+};
+
 /* ISA Control and DMA registers */
 struct mace_isactrl {
 	volatile unsigned long ringbase;
@@ -199,6 +232,7 @@ struct mace_isactrl {
 	volatile unsigned long _pad[0x2000/8 - 4];
 
 	volatile unsigned long dp_ram[0x400];
+	struct mace_parport parport;
 };
 
 /* Keyboard & Mouse registers
@@ -277,7 +311,7 @@ struct mace_perif {
  */
 
 /* Parallel port */
-struct mace_parallel {	/* later... */
+struct mace_parallel {
 };
 
 struct mace_ecp1284 {	/* later... */
@@ -329,6 +363,6 @@ struct sgi_mace {
 	char _pad6[0x80000 - sizeof(struct mace_isa)];
 };
 
-extern struct sgi_mace *mace;
+extern struct sgi_mace __iomem *mace;
 
 #endif /* __ASM_MACE_H__ */
diff --git a/include/asm-mips/mach-db1x00/db1200.h b/include/asm-mips/mach-db1x00/db1200.h
index 5d894376fc1a..647fdb54cc1d 100644
--- a/include/asm-mips/mach-db1x00/db1200.h
+++ b/include/asm-mips/mach-db1x00/db1200.h
@@ -220,5 +220,8 @@ static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
 #define BOARD_PC1_INT DB1200_PC1_INT
 #define BOARD_CARD_INSERTED(SOCKET) bcsr->sig_status & (1<<(8+(2*SOCKET)))
 
+/* Nand chip select */
+#define NAND_CS 1
+
 #endif /* __ASM_DB1200_H */
 
diff --git a/include/asm-mips/mach-db1x00/db1x00.h b/include/asm-mips/mach-db1x00/db1x00.h
index efafe65258b6..7b28b23f91ce 100644
--- a/include/asm-mips/mach-db1x00/db1x00.h
+++ b/include/asm-mips/mach-db1x00/db1x00.h
@@ -200,6 +200,12 @@ typedef volatile struct
 			((NAND_T_PUL & 0xF)	<< NAND_T_PUL_SHIFT) | \
 			((NAND_T_SU  & 0xF)	<< NAND_T_SU_SHIFT)  | \
 			((NAND_T_WH  & 0xF)	<< NAND_T_WH_SHIFT)
+#define NAND_CS 1
+
+/* should be done by yamon */
+#define NAND_STCFG  0x00400005 /* 8-bit NAND */
+#define NAND_STTIME 0x00007774 /* valid for 396MHz SD=2 only */
+#define NAND_STADDR 0x12000FFF /* physical address 0x20000000 */
 
 #endif /* __ASM_DB1X00_H */
 
diff --git a/include/asm-mips/mach-generic/ide.h b/include/asm-mips/mach-generic/ide.h
index 961006948c7c..550979a9ea9d 100644
--- a/include/asm-mips/mach-generic/ide.h
+++ b/include/asm-mips/mach-generic/ide.h
@@ -168,8 +168,12 @@ static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count)
 /* ide_insw calls insw, not __ide_insw.  Why? */
 #undef insw
 #undef insl
+#undef outsw
+#undef outsl
 #define insw(port, addr, count) __ide_insw(port, addr, count)
 #define insl(port, addr, count) __ide_insl(port, addr, count)
+#define outsw(port, addr, count) __ide_outsw(port, addr, count)
+#define outsl(port, addr, count) __ide_outsl(port, addr, count)
 
 #endif /* __KERNEL__ */
 
diff --git a/include/asm-mips/mach-ip32/mc146818rtc.h b/include/asm-mips/mach-ip32/mc146818rtc.h
index f5d780ff843f..c28ba8d84076 100644
--- a/include/asm-mips/mach-ip32/mc146818rtc.h
+++ b/include/asm-mips/mach-ip32/mc146818rtc.h
@@ -11,7 +11,6 @@
 #ifndef __ASM_MACH_IP32_MC146818RTC_H
 #define __ASM_MACH_IP32_MC146818RTC_H
 
-#include <asm/io.h>
 #include <asm/ip32/mace.h>
 
 #define RTC_PORT(x)	(0x70 + (x))
@@ -26,8 +25,10 @@ static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
 	mace->isa.rtc[addr << 8] = data;
 }
 
-/* FIXME: Do it right. For now just assume that noone lives in 20th century
- * and no O2 user in 22th century ;-) */
+/*
+ * FIXME: Do it right. For now just assume that noone lives in 20th century
+ * and no O2 user in 22th century ;-)
+ */
 #define mc146818_decode_year(year) ((year) + 2000)
 
 #define RTC_ALWAYS_BCD	0
diff --git a/include/asm-mips/mach-jmr3927/asm/ds1742.h b/include/asm-mips/mach-jmr3927/ds1742.h
index 134a4b6c334a..cff6192d4bdb 100644
--- a/include/asm-mips/mach-jmr3927/asm/ds1742.h
+++ b/include/asm-mips/mach-jmr3927/ds1742.h
@@ -5,12 +5,12 @@
  *
  * Copyright (C) 2003 by Ralf Baechle
  */
-#ifndef __ASM_MACH_JMR3927_ASM_DS1742_H
-#define __ASM_MACH_JMR3927_ASM_DS1742_H
+#ifndef __ASM_MACH_JMR3927_DS1742_H
+#define __ASM_MACH_JMR3927_DS1742_H
 
 #include <asm/jmr3927/jmr3927.h>
 
 #define rtc_read(reg)		(jmr3927_nvram_in(addr))
 #define rtc_write(data, reg)	(jmr3927_nvram_out((data),(reg)))
 
-#endif /* __ASM_MACH_JMR3927_ASM_DS1742_H */
+#endif /* __ASM_MACH_JMR3927_DS1742_H */
diff --git a/include/asm-mips/mach-pb1x00/pb1200.h b/include/asm-mips/mach-pb1x00/pb1200.h
index 9a3088b19bf3..409d443322c1 100644
--- a/include/asm-mips/mach-pb1x00/pb1200.h
+++ b/include/asm-mips/mach-pb1x00/pb1200.h
@@ -248,5 +248,8 @@ static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
 #define BOARD_PC1_INT PB1200_PC1_INT
 #define BOARD_CARD_INSERTED(SOCKET) bcsr->sig_status & (1<<(8+(2*SOCKET)))
 
+/* Nand chip select */
+#define NAND_CS 1
+
 #endif /* __ASM_PB1200_H */
 
diff --git a/include/asm-mips/mach-pb1x00/pb1550.h b/include/asm-mips/mach-pb1x00/pb1550.h
index 431d6088ea96..9578ead11e8a 100644
--- a/include/asm-mips/mach-pb1x00/pb1550.h
+++ b/include/asm-mips/mach-pb1x00/pb1550.h
@@ -166,4 +166,11 @@ static BCSR * const bcsr = (BCSR *)BCSR_PHYS_ADDR;
 			((NAND_T_SU  & 0xF)	<< NAND_T_SU_SHIFT)  | \
 			((NAND_T_WH  & 0xF)	<< NAND_T_WH_SHIFT)
 
+#define NAND_CS 1
+
+/* should be done by yamon */
+#define NAND_STCFG  0x00400005 /* 8-bit NAND */
+#define NAND_STTIME 0x00007774 /* valid for 396MHz SD=2 only */
+#define NAND_STADDR 0x12000FFF /* physical address 0x20000000 */
+
 #endif /* __ASM_PB1550_H */
diff --git a/include/asm-mips/mc146818-time.h b/include/asm-mips/mc146818-time.h
index a2c2d2c24303..47214861093b 100644
--- a/include/asm-mips/mc146818-time.h
+++ b/include/asm-mips/mc146818-time.h
@@ -33,7 +33,9 @@ static inline int mc146818_set_rtc_mmss(unsigned long nowtime)
 	int real_seconds, real_minutes, cmos_minutes;
 	unsigned char save_control, save_freq_select;
 	int retval = 0;
+	unsigned long flags;
 
+	spin_lock_irqsave(&rtc_lock, flags);
 	save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being set */
 	CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
 
@@ -79,14 +81,30 @@ static inline int mc146818_set_rtc_mmss(unsigned long nowtime)
 	 */
 	CMOS_WRITE(save_control, RTC_CONTROL);
 	CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
+	spin_unlock_irqrestore(&rtc_lock, flags);
 
 	return retval;
 }
 
+/*
+ * Returns true if a clock update is in progress
+ */
+static inline unsigned char rtc_is_updating(void)
+{
+	unsigned char uip;
+	unsigned long flags;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return uip;
+}
+
 static inline unsigned long mc146818_get_cmos_time(void)
 {
 	unsigned int year, mon, day, hour, min, sec;
 	int i;
+	unsigned long flags;
 
 	/*
 	 * The Linux interpretation of the CMOS clock register contents:
@@ -97,12 +115,13 @@ static inline unsigned long mc146818_get_cmos_time(void)
 
 	/* read RTC exactly on falling edge of update flag */
 	for (i = 0 ; i < 1000000 ; i++)	/* may take up to 1 second... */
-		if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
+		if (rtc_is_updating())
 			break;
 	for (i = 0 ; i < 1000000 ; i++)	/* must try at least 2.228 ms */
-		if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
+		if (!rtc_is_updating())
 			break;
 
+	spin_lock_irqsave(&rtc_lock, flags);
 	do { /* Isn't this overkill ? UIP above should guarantee consistency */
 		sec = CMOS_READ(RTC_SECONDS);
 		min = CMOS_READ(RTC_MINUTES);
@@ -120,6 +139,7 @@ static inline unsigned long mc146818_get_cmos_time(void)
 		BCD_TO_BIN(mon);
 		BCD_TO_BIN(year);
 	}
+	spin_unlock_irqrestore(&rtc_lock, flags);
 	year = mc146818_decode_year(year);
 
 	return mktime(year, mon, day, hour, min, sec);
diff --git a/include/asm-mips/mips-boards/seadint.h b/include/asm-mips/mips-boards/seadint.h
index c3dcfcb928b6..365c2a3c64f5 100644
--- a/include/asm-mips/mips-boards/seadint.h
+++ b/include/asm-mips/mips-boards/seadint.h
@@ -20,9 +20,14 @@
 #ifndef _MIPS_SEADINT_H
 #define _MIPS_SEADINT_H
 
-#define SEADINT_UART0     2
-#define SEADINT_UART1     3
+/*
+ * Interrupts 0..7 are used for SEAD CPU interrupts
+ */
+#define MIPSCPU_INT_BASE	0
+
+#define MIPSCPU_INT_UART0	2
+#define MIPSCPU_INT_UART1	3
 
-extern void seadint_init(void);
+#define MIPSCPU_INT_CPUCTR	7
 
 #endif /* !(_MIPS_SEADINT_H) */
diff --git a/include/asm-mips/module.h b/include/asm-mips/module.h
index 2be399311eec..2af496c78c12 100644
--- a/include/asm-mips/module.h
+++ b/include/asm-mips/module.h
@@ -76,43 +76,43 @@ search_module_dbetables(unsigned long addr)
 #endif
 
 #ifdef CONFIG_CPU_MIPS32_R1
-#define MODULE_PROC_FAMILY "MIPS32_R1"
+#define MODULE_PROC_FAMILY "MIPS32_R1 "
 #elif defined CONFIG_CPU_MIPS32_R2
-#define MODULE_PROC_FAMILY "MIPS32_R2"
+#define MODULE_PROC_FAMILY "MIPS32_R2 "
 #elif defined CONFIG_CPU_MIPS64_R1
-#define MODULE_PROC_FAMILY "MIPS64_R1"
+#define MODULE_PROC_FAMILY "MIPS64_R1 "
 #elif defined CONFIG_CPU_MIPS64_R2
-#define MODULE_PROC_FAMILY "MIPS64_R2"
+#define MODULE_PROC_FAMILY "MIPS64_R2 "
 #elif defined CONFIG_CPU_R3000
-#define MODULE_PROC_FAMILY "R3000"
+#define MODULE_PROC_FAMILY "R3000 "
 #elif defined CONFIG_CPU_TX39XX
-#define MODULE_PROC_FAMILY "TX39XX"
+#define MODULE_PROC_FAMILY "TX39XX "
 #elif defined CONFIG_CPU_VR41XX
-#define MODULE_PROC_FAMILY "VR41XX"
+#define MODULE_PROC_FAMILY "VR41XX "
 #elif defined CONFIG_CPU_R4300
-#define MODULE_PROC_FAMILY "R4300"
+#define MODULE_PROC_FAMILY "R4300 "
 #elif defined CONFIG_CPU_R4X00
-#define MODULE_PROC_FAMILY "R4X00"
+#define MODULE_PROC_FAMILY "R4X00 "
 #elif defined CONFIG_CPU_TX49XX
-#define MODULE_PROC_FAMILY "TX49XX"
+#define MODULE_PROC_FAMILY "TX49XX "
 #elif defined CONFIG_CPU_R5000
-#define MODULE_PROC_FAMILY "R5000"
+#define MODULE_PROC_FAMILY "R5000 "
 #elif defined CONFIG_CPU_R5432
-#define MODULE_PROC_FAMILY "R5432"
+#define MODULE_PROC_FAMILY "R5432 "
 #elif defined CONFIG_CPU_R6000
-#define MODULE_PROC_FAMILY "R6000"
+#define MODULE_PROC_FAMILY "R6000 "
 #elif defined CONFIG_CPU_NEVADA
-#define MODULE_PROC_FAMILY "NEVADA"
+#define MODULE_PROC_FAMILY "NEVADA "
 #elif defined CONFIG_CPU_R8000
-#define MODULE_PROC_FAMILY "R8000"
+#define MODULE_PROC_FAMILY "R8000 "
 #elif defined CONFIG_CPU_R10000
-#define MODULE_PROC_FAMILY "R10000"
+#define MODULE_PROC_FAMILY "R10000 "
 #elif defined CONFIG_CPU_RM7000
-#define MODULE_PROC_FAMILY "RM7000"
+#define MODULE_PROC_FAMILY "RM7000 "
 #elif defined CONFIG_CPU_RM9000
-#define MODULE_PROC_FAMILY "RM9000"
+#define MODULE_PROC_FAMILY "RM9000 "
 #elif defined CONFIG_CPU_SB1
-#define MODULE_PROC_FAMILY "SB1"
+#define MODULE_PROC_FAMILY "SB1 "
 #else
 #error MODULE_PROC_FAMILY undefined for your processor configuration
 #endif
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h
index 34facd996503..702a28fa7a34 100644
--- a/include/asm-mips/pgtable.h
+++ b/include/asm-mips/pgtable.h
@@ -19,6 +19,9 @@
 #include <asm/io.h>
 #include <asm/pgtable-bits.h>
 
+struct mm_struct;
+struct vm_area_struct;
+
 #define PAGE_NONE	__pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT)
 #define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
 			PAGE_CACHABLE_DEFAULT)
diff --git a/include/asm-mips/rtc.h b/include/asm-mips/rtc.h
index a60e0dc7c9b9..a2abc4572b63 100644
--- a/include/asm-mips/rtc.h
+++ b/include/asm-mips/rtc.h
@@ -14,7 +14,6 @@
 
 #ifdef __KERNEL__
 
-#include <linux/spinlock.h>
 #include <linux/rtc.h>
 #include <asm/time.h>
 
@@ -29,17 +28,13 @@
 #define RTC_24H 0x02            /* 24 hour mode - else hours bit 7 means pm */
 #define RTC_DST_EN 0x01         /* auto switch DST - works f. USA only */
 
-static DEFINE_SPINLOCK(mips_rtc_lock);
-
 static inline unsigned int get_rtc_time(struct rtc_time *time)
 {
 	unsigned long nowtime;
 
-	spin_lock(&mips_rtc_lock);
 	nowtime = rtc_get_time();
 	to_tm(nowtime, time);
 	time->tm_year -= 1900;
-	spin_unlock(&mips_rtc_lock);
 
 	return RTC_24H;
 }
@@ -49,12 +44,10 @@ static inline int set_rtc_time(struct rtc_time *time)
 	unsigned long nowtime;
 	int ret;
 
-	spin_lock(&mips_rtc_lock);
 	nowtime = mktime(time->tm_year+1900, time->tm_mon+1,
 			time->tm_mday, time->tm_hour, time->tm_min,
 			time->tm_sec);
 	ret = rtc_set_time(nowtime);
-	spin_unlock(&mips_rtc_lock);
 
 	return ret;
 }
diff --git a/include/asm-mips/rtlx.h b/include/asm-mips/rtlx.h
index 83cdf6ab0d1f..1298c3fdf6c9 100644
--- a/include/asm-mips/rtlx.h
+++ b/include/asm-mips/rtlx.h
@@ -16,21 +16,19 @@
 #define RTLX_ID (RTLX_xID | RTLX_VERSION)
 #define RTLX_CHANNELS 8
 
-enum rtlx_state {
-	RTLX_STATE_UNUSED = 0,
-	RTLX_STATE_INITIALISED,
-	RTLX_STATE_REMOTE_READY,
-	RTLX_STATE_OPENED
-};
-
 #define RTLX_BUFFER_SIZE 1024
+
+/*
+ * lx_state bits
+ */
+#define RTLX_STATE_OPENED 1UL
+
 /* each channel supports read and write.
    linux (vpe0) reads lx_buffer  and writes rt_buffer
    SP (vpe1) reads rt_buffer and writes lx_buffer
 */
-typedef struct rtlx_channel {
-	enum rtlx_state rt_state;
-	enum rtlx_state lx_state;
+struct rtlx_channel {
+	unsigned long lx_state;
 
 	int buffer_size;
 
@@ -43,14 +41,12 @@ typedef struct rtlx_channel {
 
 	void *queues;
 
-} rtlx_channel_t;
+};
 
-typedef struct rtlx_info {
+struct rtlx_info {
 	unsigned long id;
-	enum rtlx_state state;
 
 	struct rtlx_channel channel[RTLX_CHANNELS];
+};
 
-} rtlx_info_t;
-
-#endif
+#endif /* _RTLX_H_ */
diff --git a/include/asm-mips/signal.h b/include/asm-mips/signal.h
index 8ca539e80d87..6fe903e09c62 100644
--- a/include/asm-mips/signal.h
+++ b/include/asm-mips/signal.h
@@ -155,27 +155,6 @@ typedef struct sigaltstack {
 #ifdef __KERNEL__
 #include <asm/sigcontext.h>
 
-/*
- * The following break codes are or were in use for specific purposes in
- * other MIPS operating systems.  Linux/MIPS doesn't use all of them.  The
- * unused ones are here as placeholders; we might encounter them in
- * non-Linux/MIPS object files or make use of them in the future.
- */
-#define BRK_USERBP	0	/* User bp (used by debuggers) */
-#define BRK_KERNELBP	1	/* Break in the kernel */
-#define BRK_ABORT	2	/* Sometimes used by abort(3) to SIGIOT */
-#define BRK_BD_TAKEN	3	/* For bd slot emulation - not implemented */
-#define BRK_BD_NOTTAKEN	4	/* For bd slot emulation - not implemented */
-#define BRK_SSTEPBP	5	/* User bp (used by debuggers) */
-#define BRK_OVERFLOW	6	/* Overflow check */
-#define BRK_DIVZERO	7	/* Divide by zero check */
-#define BRK_RANGE	8	/* Range error check */
-#define BRK_STACKOVERFLOW 9	/* For Ada stackchecking */
-#define BRK_NORLD	10	/* No rld found - not used by Linux/MIPS */
-#define _BRK_THREADBP	11	/* For threads, user bp (used by debuggers) */
-#define BRK_MULOVF	1023	/* Multiply overflow */
-#define BRK_BUG		512	/* Used by BUG() */
-
 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 
 #endif /* __KERNEL__ */
diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h
index e22a20665871..9cc3564cc2c9 100644
--- a/include/asm-mips/time.h
+++ b/include/asm-mips/time.h
@@ -20,6 +20,9 @@
 #include <linux/linkage.h>
 #include <linux/ptrace.h>
 #include <linux/rtc.h>
+#include <linux/spinlock.h>
+
+extern spinlock_t rtc_lock;
 
 /*
  * RTC ops.  By default, they point to no-RTC functions.