5 files changed, 10 insertions, 14 deletions

diff --git a/arch/openrisc/include/asm/page.h b/arch/openrisc/include/asm/page.h
index b041b344b229..108906f991d6 100644
--- a/arch/openrisc/include/asm/page.h
+++ b/arch/openrisc/include/asm/page.h
@@ -71,9 +71,6 @@ typedef struct page *pgtable_t;
 #define __pgd(x)        ((pgd_t) { (x) })
 #define __pgprot(x)     ((pgprot_t) { (x) })
 
-extern unsigned long memory_start;
-extern unsigned long memory_end;
-
 #endif /* !__ASSEMBLY__ */
 
 
@@ -94,8 +91,7 @@ extern unsigned long memory_end;
 
 #define pfn_valid(pfn)          ((pfn) < max_mapnr)
 
-#define virt_addr_valid(kaddr)  (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
-                                ((void *)(kaddr) < (void *)memory_end))
+#define virt_addr_valid(kaddr)  (pfn_valid(virt_to_pfn(kaddr)))
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index bb54c97b9783..f7516fa78b58 100644
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -81,8 +81,8 @@ extern inline void prepare_to_copy(struct task_struct *tsk)
 #define INIT_THREAD  { }
 
 
-#define KSTK_EIP(tsk)   (task_pt_regs(tsk)->pc);
-#define KSTK_ESP(tsk)   (task_pt_regs(tsk)->sp);
+#define KSTK_EIP(tsk)   (task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk)   (task_pt_regs(tsk)->sp)
 
 
 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
diff --git a/arch/openrisc/include/asm/ptrace.h b/arch/openrisc/include/asm/ptrace.h
index e612ce4512c7..4651a737591d 100644
--- a/arch/openrisc/include/asm/ptrace.h
+++ b/arch/openrisc/include/asm/ptrace.h
@@ -73,9 +73,13 @@ struct pt_regs {
                 };
         };
         long  pc;
+        /* For restarting system calls:
+         * Set to syscall number for syscall exceptions,
+         * -1 for all other exceptions.
+         */
         long  orig_gpr11;       /* For restarting system calls */
-        long  syscallno;        /* Syscall number (used by strace) */
         long dummy;             /* Cheap alignment fix */
+        long dummy2;            /* Cheap alignment fix */
 };
 
 /* TODO: Rename this to REDZONE because that's what it is */
diff --git a/arch/openrisc/include/asm/syscall.h b/arch/openrisc/include/asm/syscall.h
index 9f0337055d26..b752bb67891d 100644
--- a/arch/openrisc/include/asm/syscall.h
+++ b/arch/openrisc/include/asm/syscall.h
@@ -25,7 +25,7 @@
 static inline int
 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
 {
-        return regs->syscallno ? regs->syscallno : -1;
+        return regs->orig_gpr11;
 }
 
 static inline void
@@ -50,10 +50,7 @@ static inline void
 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
                          int error, long val)
 {
-        if (error)
-                regs->gpr[11] = -error;
-        else
-                regs->gpr[11] = val;
+        regs->gpr[11] = (long) error ?: val;
 }
 
 static inline void
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index c310e45b538e..f5abaa0ffc38 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -26,7 +26,6 @@
 #include <linux/thread_info.h>
 #include <linux/prefetch.h>
 #include <linux/string.h>
-#include <linux/thread_info.h>
 #include <asm/page.h>
 
 #define VERIFY_READ     0