3 files changed, 46 insertions, 48 deletions

diff --git a/include/asm-sparc64/kdebug.h b/include/asm-sparc64/kdebug.h
index f70d3dad01f9..6321f5a0198d 100644
--- a/include/asm-sparc64/kdebug.h
+++ b/include/asm-sparc64/kdebug.h
@@ -16,7 +16,7 @@ struct die_args {
 };
 
 /* Note - you should never unregister because that can race with NMIs.
- * If you really want to do it first unregister - then synchronize_kernel
+ * If you really want to do it first unregister - then synchronize_sched
  * - then free.
  */
 int register_die_notifier(struct notifier_block *nb);
diff --git a/include/asm-sparc64/system.h b/include/asm-sparc64/system.h
index fd12ca386f48..f9be2c5b4dc9 100644
--- a/include/asm-sparc64/system.h
+++ b/include/asm-sparc64/system.h
@@ -139,19 +139,13 @@ extern void __flushw_user(void);
 #define flush_user_windows flushw_user
 #define flush_register_windows flushw_all
 
-#define prepare_arch_switch(rq, next)           \
-do {    spin_lock(&(next)->switch_lock);        \
-        spin_unlock(&(rq)->lock);               \
+/* Don't hold the runqueue lock over context switch */
+#define __ARCH_WANT_UNLOCKED_CTXSW
+#define prepare_arch_switch(next)               \
+do {                                            \
         flushw_all();                           \
 } while (0)
 
-#define finish_arch_switch(rq, prev)            \
-do {    spin_unlock_irq(&(prev)->switch_lock);  \
-} while (0)
-
-#define task_running(rq, p) \
-        ((rq)->curr == (p) || spin_is_locked(&(p)->switch_lock))
-
         /* See what happens when you design the chip correctly?
          *
          * We tell gcc we clobber all non-fixed-usage registers except
diff --git a/include/asm-sparc64/termios.h b/include/asm-sparc64/termios.h
index 8effce0da087..9777a9cca88a 100644
--- a/include/asm-sparc64/termios.h
+++ b/include/asm-sparc64/termios.h
@@ -100,16 +100,17 @@ struct winsize {
 #define user_termio_to_kernel_termios(termios, termio) \
 ({ \
         unsigned short tmp; \
-        get_user(tmp, &(termio)->c_iflag); \
+        int err; \
+        err = get_user(tmp, &(termio)->c_iflag); \
         (termios)->c_iflag = (0xffff0000 & ((termios)->c_iflag)) | tmp; \
-        get_user(tmp, &(termio)->c_oflag); \
+        err |= get_user(tmp, &(termio)->c_oflag); \
         (termios)->c_oflag = (0xffff0000 & ((termios)->c_oflag)) | tmp; \
-        get_user(tmp, &(termio)->c_cflag); \
+        err |= get_user(tmp, &(termio)->c_cflag); \
         (termios)->c_cflag = (0xffff0000 & ((termios)->c_cflag)) | tmp; \
-        get_user(tmp, &(termio)->c_lflag); \
+        err |= get_user(tmp, &(termio)->c_lflag); \
         (termios)->c_lflag = (0xffff0000 & ((termios)->c_lflag)) | tmp; \
-        copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
-        0; \
+        err |= copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
+        err; \
 })
 
 /*
@@ -119,53 +120,56 @@ struct winsize {
  */
 #define kernel_termios_to_user_termio(termio, termios) \
 ({ \
-        put_user((termios)->c_iflag, &(termio)->c_iflag); \
-        put_user((termios)->c_oflag, &(termio)->c_oflag); \
-        put_user((termios)->c_cflag, &(termio)->c_cflag); \
-        put_user((termios)->c_lflag, &(termio)->c_lflag); \
-        put_user((termios)->c_line,  &(termio)->c_line); \
-        copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
+        int err; \
+        err  = put_user((termios)->c_iflag, &(termio)->c_iflag); \
+        err |= put_user((termios)->c_oflag, &(termio)->c_oflag); \
+        err |= put_user((termios)->c_cflag, &(termio)->c_cflag); \
+        err |= put_user((termios)->c_lflag, &(termio)->c_lflag); \
+        err |= put_user((termios)->c_line,  &(termio)->c_line); \
+        err |= copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
         if (!((termios)->c_lflag & ICANON)) { \
-                put_user((termios)->c_cc[VMIN], &(termio)->c_cc[_VMIN]); \
-                put_user((termios)->c_cc[VTIME], &(termio)->c_cc[_VTIME]); \
+                err |= put_user((termios)->c_cc[VMIN], &(termio)->c_cc[_VMIN]); \
+                err |= put_user((termios)->c_cc[VTIME], &(termio)->c_cc[_VTIME]); \
         } \
-        0; \
+        err; \
 })
 
 #define user_termios_to_kernel_termios(k, u) \
 ({ \
-        get_user((k)->c_iflag, &(u)->c_iflag); \
-        get_user((k)->c_oflag, &(u)->c_oflag); \
-        get_user((k)->c_cflag, &(u)->c_cflag); \
-        get_user((k)->c_lflag, &(u)->c_lflag); \
-        get_user((k)->c_line,  &(u)->c_line); \
-        copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
+        int err; \
+        err  = get_user((k)->c_iflag, &(u)->c_iflag); \
+        err |= get_user((k)->c_oflag, &(u)->c_oflag); \
+        err |= get_user((k)->c_cflag, &(u)->c_cflag); \
+        err |= get_user((k)->c_lflag, &(u)->c_lflag); \
+        err |= get_user((k)->c_line,  &(u)->c_line); \
+        err |= copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
         if((k)->c_lflag & ICANON) { \
-                get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
-                get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
+                err |= get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
+                err |= get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
         } else { \
-                get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
-                get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
+                err |= get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
+                err |= get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
         } \
-        0; \
+        err; \
 })
 
 #define kernel_termios_to_user_termios(u, k) \
 ({ \
-        put_user((k)->c_iflag, &(u)->c_iflag); \
-        put_user((k)->c_oflag, &(u)->c_oflag); \
-        put_user((k)->c_cflag, &(u)->c_cflag); \
-        put_user((k)->c_lflag, &(u)->c_lflag); \
-        put_user((k)->c_line, &(u)->c_line); \
-        copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
+        int err; \
+        err  = put_user((k)->c_iflag, &(u)->c_iflag); \
+        err |= put_user((k)->c_oflag, &(u)->c_oflag); \
+        err |= put_user((k)->c_cflag, &(u)->c_cflag); \
+        err |= put_user((k)->c_lflag, &(u)->c_lflag); \
+        err |= put_user((k)->c_line, &(u)->c_line); \
+        err |= copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
         if(!((k)->c_lflag & ICANON)) { \
-                put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
-                put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
+                err |= put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
+                err |= put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
         } else { \
-                put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
-                put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
+                err |= put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
+                err |= put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
         } \
-        0; \
+        err; \
 })
 
 #endif  /* __KERNEL__ */