microblaze: uaccess s/might_sleep/might_fault/

The only reason uaccess routines might sleep
is if they fault. Make this explicit.

Signed-off-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index efe59d881789fbafd7db6bd4933263394995da1f..2fc8bf7bcdd0fd42a0c5fc0ee8458eb80a0e8547 100644 (file)
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -145,7 +145,7 @@ static inline unsigned long __must_check __clear_user(void __user *to,
 static inline unsigned long __must_check clear_user(void __user *to,
                                                        unsigned long n)
 {
-       might_sleep();
+       might_fault();
        if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
                return n;
 
@@ -371,7 +371,7 @@ extern long __user_bad(void);
 static inline long copy_from_user(void *to,
                const void __user *from, unsigned long n)
 {
-       might_sleep();
+       might_fault();
        if (access_ok(VERIFY_READ, from, n))
                return __copy_from_user(to, from, n);
        return n;
@@ -385,7 +385,7 @@ static inline long copy_from_user(void *to,
 static inline long copy_to_user(void __user *to,
                const void *from, unsigned long n)
 {
-       might_sleep();
+       might_fault();
        if (access_ok(VERIFY_WRITE, to, n))
                return __copy_to_user(to, from, n);
        return n;