1 files changed, 10 insertions, 15 deletions

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 9eb090582cf1..1e6956a90608 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -793,8 +793,7 @@ SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
         case GSI_UACPROC:
                 if (nbytes < sizeof(unsigned int))
                         return -EINVAL;
-                w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) &
-                        UAC_BITMASK;
+                w = current_thread_info()->status & UAC_BITMASK;
                 if (put_user(w, (unsigned int __user *)buffer))
                         return -EFAULT;
                 return 1;
@@ -904,24 +903,20 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
                 break;
 
         case SSI_NVPAIRS: {
-                unsigned long v, w, i;
-                unsigned int old, new;
+                unsigned __user *p = buffer;
+                unsigned i;
                 
-                for (i = 0; i < nbytes; ++i) {
+                for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
+                        unsigned v, w, status;
 
-                        if (get_user(v, 2*i + (unsigned int __user *)buffer))
-                                return -EFAULT;
-                        if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer))
+                        if (get_user(v, p) || get_user(w, p + 1))
                                 return -EFAULT;
                         switch (v) {
                         case SSIN_UACPROC:
-                        again:
-                                old = current_thread_info()->flags;
-                                new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT);
-                                new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT;
-                                if (cmpxchg(&current_thread_info()->flags,
-                                            old, new) != old)
-                                        goto again;
+                                w &= UAC_BITMASK;
+                                status = current_thread_info()->status;
+                                status = (status & ~UAC_BITMASK) | w;
+                                current_thread_info()->status = status;
                                 break;
  
                         default: