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UPSTREAM: regulator: core: Always flag voltage constraints as appliable
[firefly-linux-kernel-4.4.55.git]
/
lib
/
strnlen_user.c
diff --git
a/lib/strnlen_user.c
b/lib/strnlen_user.c
index 3a5f2b366d84ed209a012cf62491ca30f6a8bca8..8e105ed4df12bb6bb0a170afff54d979c15d73c0 100644
(file)
--- a/
lib/strnlen_user.c
+++ b/
lib/strnlen_user.c
@@
-45,8
+45,7
@@
static inline long do_strnlen_user(const char __user *src, unsigned long count,
src -= align;
max += align;
src -= align;
max += align;
- if (unlikely(__get_user(c,(unsigned long __user *)src)))
- return 0;
+ unsafe_get_user(c, (unsigned long __user *)src, efault);
c |= aligned_byte_mask(align);
for (;;) {
c |= aligned_byte_mask(align);
for (;;) {
@@
-61,8
+60,7
@@
static inline long do_strnlen_user(const char __user *src, unsigned long count,
if (unlikely(max <= sizeof(unsigned long)))
break;
max -= sizeof(unsigned long);
if (unlikely(max <= sizeof(unsigned long)))
break;
max -= sizeof(unsigned long);
- if (unlikely(__get_user(c,(unsigned long __user *)(src+res))))
- return 0;
+ unsafe_get_user(c, (unsigned long __user *)(src+res), efault);
}
res -= align;
}
res -= align;
@@
-77,6
+75,7
@@
static inline long do_strnlen_user(const char __user *src, unsigned long count,
* Nope: we hit the address space limit, and we still had more
* characters the caller would have wanted. That's 0.
*/
* Nope: we hit the address space limit, and we still had more
* characters the caller would have wanted. That's 0.
*/
+efault:
return 0;
}
return 0;
}
@@
-112,7
+111,12
@@
long strnlen_user(const char __user *str, long count)
src_addr = (unsigned long)str;
if (likely(src_addr < max_addr)) {
unsigned long max = max_addr - src_addr;
src_addr = (unsigned long)str;
if (likely(src_addr < max_addr)) {
unsigned long max = max_addr - src_addr;
- return do_strnlen_user(str, count, max);
+ long retval;
+
+ user_access_begin();
+ retval = do_strnlen_user(str, count, max);
+ user_access_end();
+ return retval;
}
return 0;
}
}
return 0;
}
@@
-141,7
+145,12
@@
long strlen_user(const char __user *str)
src_addr = (unsigned long)str;
if (likely(src_addr < max_addr)) {
unsigned long max = max_addr - src_addr;
src_addr = (unsigned long)str;
if (likely(src_addr < max_addr)) {
unsigned long max = max_addr - src_addr;
- return do_strnlen_user(str, ~0ul, max);
+ long retval;
+
+ user_access_begin();
+ retval = do_strnlen_user(str, ~0ul, max);
+ user_access_end();
+ return retval;
}
return 0;
}
}
return 0;
}