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-rw-r--r--include/asm-s390/bug.h11
-rw-r--r--include/asm-s390/ccwdev.h2
-rw-r--r--include/asm-s390/cio.h2
-rw-r--r--include/asm-s390/futex.h5
-rw-r--r--include/asm-s390/irqflags.h18
-rw-r--r--include/asm-s390/pgalloc.h2
-rw-r--r--include/asm-s390/processor.h16
-rw-r--r--include/asm-s390/setup.h3
-rw-r--r--include/asm-s390/system.h10
-rw-r--r--include/asm-s390/timex.h4
10 files changed, 47 insertions, 26 deletions
diff --git a/include/asm-s390/bug.h b/include/asm-s390/bug.h
index 7ddaa05b98d..87689836394 100644
--- a/include/asm-s390/bug.h
+++ b/include/asm-s390/bug.h
@@ -5,9 +5,18 @@
#ifdef CONFIG_BUG
+static inline __attribute__((noreturn)) void __do_illegal_op(void)
+{
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
+ __builtin_trap();
+#else
+ asm volatile(".long 0");
+#endif
+}
+
#define BUG() do { \
printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
- __builtin_trap(); \
+ __do_illegal_op(); \
} while (0)
#define HAVE_ARCH_BUG
diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
index 12456cb2f88..58c70acffc7 100644
--- a/include/asm-s390/ccwdev.h
+++ b/include/asm-s390/ccwdev.h
@@ -63,7 +63,7 @@ ccw_device_id_match(const struct ccw_device_id *array,
return id;
}
- return 0;
+ return NULL;
}
/* The struct ccw device is our replacement for the globally accessible
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index 2b161930635..28fdd6e2b8b 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -276,6 +276,8 @@ extern void wait_cons_dev(void);
extern void clear_all_subchannels(void);
+extern void cio_reset_channel_paths(void);
+
extern void css_schedule_reprobe(void);
#endif
diff --git a/include/asm-s390/futex.h b/include/asm-s390/futex.h
index 1802775568b..ffedf14f89f 100644
--- a/include/asm-s390/futex.h
+++ b/include/asm-s390/futex.h
@@ -98,9 +98,10 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
- asm volatile(" cs %1,%4,0(%5)\n"
+ asm volatile(" sacf 256\n"
+ " cs %1,%4,0(%5)\n"
"0: lr %0,%1\n"
- "1:\n"
+ "1: sacf 0\n"
#ifndef __s390x__
".section __ex_table,\"a\"\n"
" .align 4\n"
diff --git a/include/asm-s390/irqflags.h b/include/asm-s390/irqflags.h
index 65f4db627e7..3b566a5b3cc 100644
--- a/include/asm-s390/irqflags.h
+++ b/include/asm-s390/irqflags.h
@@ -25,16 +25,22 @@
__flags; \
})
-#define raw_local_save_flags(x) \
- __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) )
-
-#define raw_local_irq_restore(x) \
- __asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory")
+#define raw_local_save_flags(x) \
+do { \
+ typecheck(unsigned long, x); \
+ __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) ); \
+} while (0)
+
+#define raw_local_irq_restore(x) \
+do { \
+ typecheck(unsigned long, x); \
+ __asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory"); \
+} while (0)
#define raw_irqs_disabled() \
({ \
unsigned long flags; \
- local_save_flags(flags); \
+ raw_local_save_flags(flags); \
!((flags >> __FLAG_SHIFT) & 3); \
})
diff --git a/include/asm-s390/pgalloc.h b/include/asm-s390/pgalloc.h
index 3002fda89d3..a78e853e0dd 100644
--- a/include/asm-s390/pgalloc.h
+++ b/include/asm-s390/pgalloc.h
@@ -142,7 +142,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
pte_t *pte = pte_alloc_one_kernel(mm, vmaddr);
if (pte)
return virt_to_page(pte);
- return 0;
+ return NULL;
}
static inline void pte_free_kernel(pte_t *pte)
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index c5cbc4bd841..5b71d373172 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -199,15 +199,13 @@ unsigned long get_wchan(struct task_struct *p);
/*
* Give up the time slice of the virtual PU.
*/
-#ifndef __s390x__
-# define cpu_relax() asm volatile ("diag 0,0,68" : : : "memory")
-#else /* __s390x__ */
-# define cpu_relax() \
- do { \
- if (MACHINE_HAS_DIAG44) \
- asm volatile ("diag 0,0,68" : : : "memory"); \
- } while (0)
-#endif /* __s390x__ */
+static inline void cpu_relax(void)
+{
+ if (MACHINE_HAS_DIAG44)
+ asm volatile ("diag 0,0,68" : : : "memory");
+ else
+ barrier();
+}
/*
* Set PSW to specified value.
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index da3fd4a7bb3..19e31979309 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -40,15 +40,16 @@ extern unsigned long machine_flags;
#define MACHINE_IS_VM (machine_flags & 1)
#define MACHINE_IS_P390 (machine_flags & 4)
#define MACHINE_HAS_MVPG (machine_flags & 16)
-#define MACHINE_HAS_DIAG44 (machine_flags & 32)
#define MACHINE_HAS_IDTE (machine_flags & 128)
#ifndef __s390x__
#define MACHINE_HAS_IEEE (machine_flags & 2)
#define MACHINE_HAS_CSP (machine_flags & 8)
+#define MACHINE_HAS_DIAG44 (1)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
+#define MACHINE_HAS_DIAG44 (machine_flags & 32)
#endif /* __s390x__ */
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 9ab186ffde2..16040048cd1 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -128,8 +128,13 @@ extern void account_system_vtime(struct task_struct *);
#define nop() __asm__ __volatile__ ("nop")
-#define xchg(ptr,x) \
- ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(void *)(ptr),sizeof(*(ptr))))
+#define xchg(ptr,x) \
+({ \
+ __typeof__(*(ptr)) __ret; \
+ __ret = (__typeof__(*(ptr))) \
+ __xchg((unsigned long)(x), (void *)(ptr),sizeof(*(ptr))); \
+ __ret; \
+})
static inline unsigned long __xchg(unsigned long x, void * ptr, int size)
{
@@ -299,7 +304,6 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
#define set_mb(var, value) do { var = value; mb(); } while (0)
-#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#ifdef __s390x__
diff --git a/include/asm-s390/timex.h b/include/asm-s390/timex.h
index 4848057dafe..5d0332a4c2b 100644
--- a/include/asm-s390/timex.h
+++ b/include/asm-s390/timex.h
@@ -19,7 +19,7 @@ static inline cycles_t get_cycles(void)
{
cycles_t cycles;
- __asm__("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
+ __asm__ __volatile__ ("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
return cycles >> 2;
}
@@ -27,7 +27,7 @@ static inline unsigned long long get_clock (void)
{
unsigned long long clk;
- __asm__("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
+ __asm__ __volatile__ ("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
return clk;
}
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