Update the i.MX31 Kernel to 2.6.232.6.23-mx31ads-2008022618072.6.23-mx31-200802261807

This is the result of a brute-force attempt to update the kernel to 2.6.23.
Now that we have a git tree, our effort will be a little nicer in the future.

Signed-off-by: Justin Waters <justin.waters@timesys.com>

22 files changed, 104 insertions, 148 deletions

diff --git a/include/asm-s390/a.out.h b/include/asm-s390/a.out.h
index 72adee6ef338..46158dcaf517 100644
--- a/include/asm-s390/a.out.h
+++ b/include/asm-s390/a.out.h
@@ -32,6 +32,7 @@ struct exec
 #ifdef __KERNEL__
 
 #define STACK_TOP	TASK_SIZE
+#define STACK_TOP_MAX	DEFAULT_TASK_SIZE
 
 #endif
 
diff --git a/include/asm-s390/atomic.h b/include/asm-s390/atomic.h
index c17bdbf22067..2d184655bc5d 100644
--- a/include/asm-s390/atomic.h
+++ b/include/asm-s390/atomic.h
@@ -24,7 +24,7 @@
  */
 
 typedef struct {
-	volatile int counter;
+	int counter;
 } __attribute__ ((aligned (4))) atomic_t;
 #define ATOMIC_INIT(i)  { (i) }
 
@@ -67,8 +67,17 @@ typedef struct {
 
 #endif /* __GNUC__ */
 
-#define atomic_read(v)          ((v)->counter)
-#define atomic_set(v,i)         (((v)->counter) = (i))
+static inline int atomic_read(const atomic_t *v)
+{
+	barrier();
+	return v->counter;
+}
+
+static inline void atomic_set(atomic_t *v, int i)
+{
+	v->counter = i;
+	barrier();
+}
 
 static __inline__ int atomic_add_return(int i, atomic_t * v)
 {
@@ -141,7 +150,7 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
 
 #ifdef __s390x__
 typedef struct {
-	volatile long long counter;
+	long long counter;
 } __attribute__ ((aligned (8))) atomic64_t;
 #define ATOMIC64_INIT(i)  { (i) }
 
@@ -182,8 +191,17 @@ typedef struct {
 
 #endif /* __GNUC__ */
 
-#define atomic64_read(v)          ((v)->counter)
-#define atomic64_set(v,i)         (((v)->counter) = (i))
+static inline long long atomic64_read(const atomic64_t *v)
+{
+	barrier();
+	return v->counter;
+}
+
+static inline void atomic64_set(atomic64_t *v, long long i)
+{
+	v->counter = i;
+	barrier();
+}
 
 static __inline__ long long atomic64_add_return(long long i, atomic64_t * v)
 {
diff --git a/include/asm-s390/bug.h b/include/asm-s390/bug.h
index 838684dc6d35..384e3621e341 100644
--- a/include/asm-s390/bug.h
+++ b/include/asm-s390/bug.h
@@ -50,7 +50,7 @@
 #define BUG()	__EMIT_BUG(0)
 
 #define WARN_ON(x) ({					\
-	typeof(x) __ret_warn_on = (x);			\
+	int __ret_warn_on = !!(x);			\
 	if (__builtin_constant_p(__ret_warn_on)) {	\
 		if (__ret_warn_on)			\
 			__EMIT_BUG(BUGFLAG_WARNING);	\
diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
index 4c2e1710f157..1aeda27d5a8b 100644
--- a/include/asm-s390/ccwdev.h
+++ b/include/asm-s390/ccwdev.h
@@ -165,11 +165,6 @@ extern int ccw_device_resume(struct ccw_device *);
 extern int ccw_device_halt(struct ccw_device *, unsigned long);
 extern int ccw_device_clear(struct ccw_device *, unsigned long);
 
-extern int __deprecated read_dev_chars(struct ccw_device *cdev, void **buffer, int length);
-extern int __deprecated read_conf_data(struct ccw_device *cdev, void **buffer, int *length);
-extern int __deprecated read_conf_data_lpm(struct ccw_device *cdev, void **buffer,
-			      int *length, __u8 lpm);
-
 extern int ccw_device_set_online(struct ccw_device *cdev);
 extern int ccw_device_set_offline(struct ccw_device *cdev);
 
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index f738d2827582..1982fb344164 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -258,19 +258,6 @@ struct ciw {
 /* Sick revalidation of device. */
 #define CIO_REVALIDATE 0x0008
 
-struct diag210 {
-	__u16 vrdcdvno : 16;   /* device number (input) */
-	__u16 vrdclen  : 16;   /* data block length (input) */
-	__u32 vrdcvcla : 8;    /* virtual device class (output) */
-	__u32 vrdcvtyp : 8;    /* virtual device type (output) */
-	__u32 vrdcvsta : 8;    /* virtual device status (output) */
-	__u32 vrdcvfla : 8;    /* virtual device flags (output) */
-	__u32 vrdcrccl : 8;    /* real device class (output) */
-	__u32 vrdccrty : 8;    /* real device type (output) */
-	__u32 vrdccrmd : 8;    /* real device model (output) */
-	__u32 vrdccrft : 8;    /* real device feature (output) */
-} __attribute__ ((packed,aligned(4)));
-
 struct ccw_dev_id {
 	u8 ssid;
 	u16 devno;
@@ -285,8 +272,6 @@ static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1,
 	return 0;
 }
 
-extern int diag210(struct diag210 *addr);
-
 extern void wait_cons_dev(void);
 
 extern void css_schedule_reprobe(void);
diff --git a/include/asm-s390/cmb.h b/include/asm-s390/cmb.h
index 241756f80df3..021e7c3223ec 100644
--- a/include/asm-s390/cmb.h
+++ b/include/asm-s390/cmb.h
@@ -88,7 +88,6 @@ extern u64 cmf_read(struct ccw_device *cdev, int index);
  *    any
  **/
 extern int cmf_readall(struct ccw_device *cdev, struct cmbdata*data);
-extern void cmf_reset(struct ccw_device *cdev);
 
 #endif /* __KERNEL__ */
 #endif /* S390_CMB_H */
diff --git a/include/asm-s390/compat.h b/include/asm-s390/compat.h
index 296f4f1a20e1..7f4ad623f7d5 100644
--- a/include/asm-s390/compat.h
+++ b/include/asm-s390/compat.h
@@ -60,8 +60,10 @@ typedef s32		compat_timer_t;
 
 typedef s32		compat_int_t;
 typedef s32		compat_long_t;
+typedef s64		compat_s64;
 typedef u32		compat_uint_t;
 typedef u32		compat_ulong_t;
+typedef u64		compat_u64;
 
 struct compat_timespec {
 	compat_time_t	tv_sec;
diff --git a/include/asm-s390/dma-mapping.h b/include/asm-s390/dma-mapping.h
deleted file mode 100644
index 3f8c12fde0f0..000000000000
--- a/include/asm-s390/dma-mapping.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- *  include/asm-s390/dma-mapping.h
- *
- *  S390 version
- *
- *  This file exists so that #include <dma-mapping.h> doesn't break anything.
- */
-
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#endif /* _ASM_DMA_MAPPING_H */
diff --git a/include/asm-s390/kprobes.h b/include/asm-s390/kprobes.h
index 830fe4c4eea6..340ba10446ea 100644
--- a/include/asm-s390/kprobes.h
+++ b/include/asm-s390/kprobes.h
@@ -46,8 +46,6 @@ typedef u16 kprobe_opcode_t;
 	? (MAX_STACK_SIZE) \
 	: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
 
-#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)(pentry)
-
 #define ARCH_SUPPORTS_KRETPROBES
 #define ARCH_INACTIVE_KPROBE_COUNT 0
 
diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h
index 05ea6f172786..f326451ed6ec 100644
--- a/include/asm-s390/page.h
+++ b/include/asm-s390/page.h
@@ -64,7 +64,8 @@ static inline void copy_page(void *to, void *from)
 #define clear_user_page(page, vaddr, pg)	clear_page(page)
 #define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
 
-#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
+#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
+	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
 
 /*
diff --git a/include/asm-s390/percpu.h b/include/asm-s390/percpu.h
index 9ea7f1023e57..545857e64443 100644
--- a/include/asm-s390/percpu.h
+++ b/include/asm-s390/percpu.h
@@ -41,6 +41,11 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
     __attribute__((__section__(".data.percpu"))) \
     __typeof__(type) per_cpu__##name
 
+#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name)		\
+    __attribute__((__section__(".data.percpu.shared_aligned"))) \
+    __typeof__(type) per_cpu__##name				\
+    ____cacheline_aligned_in_smp
+
 #define __get_cpu_var(var) __reloc_hide(var,S390_lowcore.percpu_offset)
 #define __raw_get_cpu_var(var) __reloc_hide(var,S390_lowcore.percpu_offset)
 #define per_cpu(var,cpu) __reloc_hide(var,__per_cpu_offset[cpu])
@@ -59,6 +64,8 @@ do {								\
 
 #define DEFINE_PER_CPU(type, name) \
     __typeof__(type) per_cpu__##name
+#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name)	\
+    DEFINE_PER_CPU(type, name)
 
 #define __get_cpu_var(var) __reloc_hide(var,0)
 #define __raw_get_cpu_var(var) __reloc_hide(var,0)
diff --git a/include/asm-s390/pgalloc.h b/include/asm-s390/pgalloc.h
index 56c8a6c80e2e..e45d3c9a4b7e 100644
--- a/include/asm-s390/pgalloc.h
+++ b/include/asm-s390/pgalloc.h
@@ -19,8 +19,6 @@
 
 #define check_pgt_cache()	do {} while (0)
 
-extern void diag10(unsigned long addr);
-
 /*
  * Page allocation orders.
  */
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index 0a307bb2f353..3208dc6c412c 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -530,14 +530,6 @@ static inline int pte_young(pte_t pte)
 	return 0;
 }
 
-static inline int pte_read(pte_t pte)
-{
-	/* All pages are readable since we don't use the fetch
-	 * protection bit in the storage key.
-	 */
-	return 1;
-}
-
 /*
  * pgd/pmd/pte modification functions
  */
@@ -677,19 +669,6 @@ ptep_clear_flush_young(struct vm_area_struct *vma,
 	return ptep_test_and_clear_young(vma, address, ptep);
 }
 
-static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
-	return 0;
-}
-
-static inline int
-ptep_clear_flush_dirty(struct vm_area_struct *vma,
-			unsigned long address, pte_t *ptep)
-{
-	/* No need to flush TLB; bits are in storage key */
-	return ptep_test_and_clear_dirty(vma, address, ptep);
-}
-
 static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	pte_t pte = *ptep;
@@ -715,16 +694,19 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
 	pte_val(*ptep) = _PAGE_TYPE_EMPTY;
 }
 
-static inline pte_t
-ptep_clear_flush(struct vm_area_struct *vma,
-		 unsigned long address, pte_t *ptep)
+static inline void ptep_invalidate(unsigned long address, pte_t *ptep)
 {
-	pte_t pte = *ptep;
-	pte_t *shadow_pte = get_shadow_pte(ptep);
-
 	__ptep_ipte(address, ptep);
-	if (shadow_pte)
-		__ptep_ipte(address, shadow_pte);
+	ptep = get_shadow_pte(ptep);
+	if (ptep)
+		__ptep_ipte(address, ptep);
+}
+
+static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
+				     unsigned long address, pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	ptep_invalidate(address, ptep);
 	return pte;
 }
 
@@ -734,21 +716,14 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 	set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
 }
 
-static inline void
-ptep_establish(struct vm_area_struct *vma, 
-	       unsigned long address, pte_t *ptep,
-	       pte_t entry)
-{
-	ptep_clear_flush(vma, address, ptep);
-	set_pte(ptep, entry);
-}
-
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-({									  \
-	int __changed = !pte_same(*(__ptep), __entry);			  \
-	if (__changed)							  \
-		ptep_establish(__vma, __address, __ptep, __entry);	  \
-	__changed;							  \
+#define ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty)	\
+({									\
+	int __changed = !pte_same(*(__ptep), __entry);			\
+	if (__changed) {						\
+		ptep_invalidate(__addr, __ptep);			\
+		set_pte_at((__vma)->vm_mm, __addr, __ptep, __entry);	\
+	}								\
+	__changed;							\
 })
 
 /*
@@ -948,12 +923,9 @@ extern int remove_shared_memory(unsigned long start, unsigned long size);
 #define __HAVE_ARCH_MEMMAP_INIT
 extern void memmap_init(unsigned long, int, unsigned long, unsigned long);
 
-#define __HAVE_ARCH_PTEP_ESTABLISH
 #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-#define __HAVE_ARCH_PTEP_CLEAR_DIRTY_FLUSH
 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR
 #define __HAVE_ARCH_PTEP_CLEAR_FLUSH
 #define __HAVE_ARCH_PTEP_SET_WRPROTECT
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 5cb480af65d5..3b972d4c6b29 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -357,8 +357,8 @@ extern void (*s390_base_ext_handler_fn)(void);
 /*
  * CPU idle notifier chain.
  */
-#define CPU_IDLE	0
-#define CPU_NOT_IDLE	1
+#define S390_CPU_IDLE		0
+#define S390_CPU_NOT_IDLE	1
 
 struct notifier_block;
 int register_idle_notifier(struct notifier_block *nb);
diff --git a/include/asm-s390/s390_ext.h b/include/asm-s390/s390_ext.h
index df9b1017b703..1e72362cad78 100644
--- a/include/asm-s390/s390_ext.h
+++ b/include/asm-s390/s390_ext.h
@@ -10,6 +10,8 @@
  *               Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
 
+#include <linux/types.h>
+
 typedef void (*ext_int_handler_t)(__u16 code);
 
 /*
diff --git a/include/asm-s390/sclp.h b/include/asm-s390/sclp.h
index 21ed64773210..cb9faf1ea5cf 100644
--- a/include/asm-s390/sclp.h
+++ b/include/asm-s390/sclp.h
@@ -11,29 +11,6 @@
 #include <linux/types.h>
 #include <asm/chpid.h>
 
-struct sccb_header {
-	u16	length;
-	u8	function_code;
-	u8	control_mask[3];
-	u16	response_code;
-} __attribute__((packed));
-
-#define LOADPARM_LEN 8
-
-struct sclp_readinfo_sccb {
-	struct	sccb_header header;	/* 0-7 */
-	u16	rnmax;			/* 8-9 */
-	u8	rnsize;			/* 10 */
-	u8	_reserved0[24 - 11];	/* 11-23 */
-	u8	loadparm[LOADPARM_LEN];	/* 24-31 */
-	u8	_reserved1[91 - 32];	/* 32-90 */
-	u8	flags;			/* 91 */
-	u8	_reserved2[100 - 92];	/* 92-99 */
-	u32	rnsize2;		/* 100-103 */
-	u64	rnmax2;			/* 104-111 */
-	u8	_reserved3[4096 - 112];	/* 112-4095 */
-} __attribute__((packed, aligned(4096)));
-
 #define SCLP_CHP_INFO_MASK_SIZE		32
 
 struct sclp_chp_info {
@@ -42,12 +19,22 @@ struct sclp_chp_info {
 	u8 configured[SCLP_CHP_INFO_MASK_SIZE];
 };
 
-extern struct sclp_readinfo_sccb s390_readinfo_sccb;
-extern void sclp_readinfo_early(void);
-extern int sclp_sdias_blk_count(void);
-extern int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
-extern int sclp_chp_configure(struct chp_id chpid);
-extern int sclp_chp_deconfigure(struct chp_id chpid);
-extern int sclp_chp_read_info(struct sclp_chp_info *info);
+#define LOADPARM_LEN 8
+
+struct sclp_ipl_info {
+	int is_valid;
+	int has_dump;
+	char loadparm[LOADPARM_LEN];
+};
+
+void sclp_readinfo_early(void);
+void sclp_facilities_detect(void);
+unsigned long long sclp_memory_detect(void);
+int sclp_sdias_blk_count(void);
+int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
+int sclp_chp_configure(struct chp_id chpid);
+int sclp_chp_deconfigure(struct chp_id chpid);
+int sclp_chp_read_info(struct sclp_chp_info *info);
+void sclp_get_ipl_info(struct sclp_ipl_info *info);
 
 #endif /* _ASM_S390_SCLP_H */
diff --git a/include/asm-s390/sfp-machine.h b/include/asm-s390/sfp-machine.h
index 8ca8c77b2d04..4e16aede4b06 100644
--- a/include/asm-s390/sfp-machine.h
+++ b/include/asm-s390/sfp-machine.h
@@ -27,9 +27,9 @@
    
 
 #define _FP_W_TYPE_SIZE		32
-#define _FP_W_TYPE		unsigned long
-#define _FP_WS_TYPE		signed long
-#define _FP_I_TYPE		long
+#define _FP_W_TYPE		unsigned int
+#define _FP_WS_TYPE		signed int
+#define _FP_I_TYPE		int
 
 #define _FP_MUL_MEAT_S(R,X,Y)					\
   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
diff --git a/include/asm-s390/sfp-util.h b/include/asm-s390/sfp-util.h
index 8cabcd23d976..0addc6466d95 100644
--- a/include/asm-s390/sfp-util.h
+++ b/include/asm-s390/sfp-util.h
@@ -51,6 +51,16 @@
 	wl = __wl;					\
 })
 
+#ifdef __s390x__
+#define udiv_qrnnd(q, r, n1, n0, d)			\
+  do { unsigned long __n;				\
+       unsigned int __r, __d;				\
+    __n = ((unsigned long)(n1) << 32) + n0;		\
+    __d = (d);						\
+    (q) = __n / __d;					\
+    (r) = __n % __d;					\
+  } while (0)
+#else
 #define udiv_qrnnd(q, r, n1, n0, d)			\
   do { unsigned int __r;				\
     (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));		\
@@ -58,6 +68,7 @@
   } while (0)
 extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
 				   unsigned int , unsigned int);
+#endif
 
 #define UDIV_NEEDS_NORMALIZATION 0
 
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 76e424f718c6..07708c07701e 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -36,8 +36,7 @@ extern void machine_halt_smp(void);
 extern void machine_power_off_smp(void);
 
 extern void smp_setup_cpu_possible_map(void);
-extern int smp_call_function_on(void (*func) (void *info), void *info,
-				int nonatomic, int wait, int cpu);
+
 #define NO_PROC_ID		0xFF		/* No processor magic marker */
 
 /*
@@ -96,14 +95,6 @@ extern int __cpu_up (unsigned int cpu);
 #endif
 
 #ifndef CONFIG_SMP
-static inline int
-smp_call_function_on(void (*func) (void *info), void *info,
-		     int nonatomic, int wait, int cpu)
-{
-	func(info);
-	return 0;
-}
-
 static inline void smp_send_stop(void)
 {
 	/* Disable all interrupts/machine checks */
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index bbe137c3ed69..64a3cd05cae1 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -97,16 +97,6 @@ static inline void restore_access_regs(unsigned int *acrs)
 	prev = __switch_to(prev,next);					     \
 } while (0)
 
-/*
- * On SMP systems, when the scheduler does migration-cost autodetection,
- * it needs a way to flush as much of the CPU's caches as possible.
- *
- * TODO: fill this in!
- */
-static inline void sched_cacheflush(void)
-{
-}
-
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 extern void account_vtime(struct task_struct *);
 extern void account_tick_vtime(struct task_struct *);
diff --git a/include/asm-s390/termbits.h b/include/asm-s390/termbits.h
index 585c78a6e407..811b9a9cdc08 100644
--- a/include/asm-s390/termbits.h
+++ b/include/asm-s390/termbits.h
@@ -25,6 +25,17 @@ struct termios {
 	cc_t c_cc[NCCS];		/* control characters */
 };
 
+struct termios2 {
+	tcflag_t c_iflag;		/* input mode flags */
+	tcflag_t c_oflag;		/* output mode flags */
+	tcflag_t c_cflag;		/* control mode flags */
+	tcflag_t c_lflag;		/* local mode flags */
+	cc_t c_line;			/* line discipline */
+	cc_t c_cc[NCCS];		/* control characters */
+	speed_t c_ispeed;		/* input speed */
+	speed_t c_ospeed;		/* output speed */
+};
+
 struct ktermios {
 	tcflag_t c_iflag;		/* input mode flags */
 	tcflag_t c_oflag;		/* output mode flags */
diff --git a/include/asm-s390/unistd.h b/include/asm-s390/unistd.h
index 790c1c557417..f04acb2670a8 100644
--- a/include/asm-s390/unistd.h
+++ b/include/asm-s390/unistd.h
@@ -251,7 +251,7 @@
 #define __NR_getcpu		311
 #define __NR_epoll_pwait	312
 #define __NR_utimes		313
-/* Number 314 is reserved for new sys_fallocate */
+#define __NR_fallocate		314
 #define __NR_utimensat		315
 #define __NR_signalfd		316
 #define __NR_timerfd		317