Merge git://git.infradead.org/mtd-2.6

1 files changed, 13 insertions, 6 deletions

diff --git a/include/asm-powerpc/uaccess.h b/include/asm-powerpc/uaccess.h
index 3872e924cdd6..d83fc29c2bbf 100644
--- a/include/asm-powerpc/uaccess.h
+++ b/include/asm-powerpc/uaccess.h
@@ -7,6 +7,7 @@
 #include <linux/sched.h>
 #include <linux/errno.h>
 #include <asm/processor.h>
+#include <asm/page.h>
 
 #define VERIFY_READ     0
 #define VERIFY_WRITE    1
@@ -179,9 +180,11 @@ do {								\
 #define __put_user_nocheck(x, ptr, size)                        \
 ({                                                              \
         long __pu_err;                                          \
-        might_sleep();                                          \
+        __typeof__(*(ptr)) __user *__pu_addr = (ptr);           \
+        if (!is_kernel_addr((unsigned long)__pu_addr))          \
+                might_sleep();                                  \
         __chk_user_ptr(ptr);                                    \
-        __put_user_size((x), (ptr), (size), __pu_err);          \
+        __put_user_size((x), __pu_addr, (size), __pu_err);      \
         __pu_err;                                               \
 })
 
@@ -258,9 +261,11 @@ do {								\
 ({                                                              \
         long __gu_err;                                          \
         unsigned long __gu_val;                                 \
+        const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
         __chk_user_ptr(ptr);                                    \
-        might_sleep();                                          \
-        __get_user_size(__gu_val, (ptr), (size), __gu_err);     \
+        if (!is_kernel_addr((unsigned long)__gu_addr))          \
+                might_sleep();                                  \
+        __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
         (x) = (__typeof__(*(ptr)))__gu_val;                     \
         __gu_err;                                               \
 })
@@ -270,9 +275,11 @@ do {								\
 ({                                                              \
         long __gu_err;                                          \
         long long __gu_val;                                     \
+        const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
         __chk_user_ptr(ptr);                                    \
-        might_sleep();                                          \
-        __get_user_size(__gu_val, (ptr), (size), __gu_err);     \
+        if (!is_kernel_addr((unsigned long)__gu_addr))          \
+                might_sleep();                                  \
+        __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
         (x) = (__typeof__(*(ptr)))__gu_val;                     \
         __gu_err;                                               \
 })