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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-15 18:02:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-15 18:02:02 -0800
commit1fa185ebcbcefdc5229c783450c9f0439a69f0c1 (patch)
tree78df9ad77a7ff85a8bbe5202b3d8b47f2764f783 /arch/cris/include/asm
parenta9724125ad014decf008d782e60447c811391326 (diff)
parent9987c19ed9a71693bf3efce2957666b2513a5252 (diff)
downloadlinux-1fa185ebcbcefdc5229c783450c9f0439a69f0c1.tar.gz
Merge tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris
Pull CRIS changes from Jesper Nilsson. * tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris: CRIS: Whitespace cleanup CRIS: macro whitespace fixes in uaccess.h CRIS: uaccess: fix sparse errors CRISv32: Remove unnecessary KERN_INFO from sync_serial CRIS: Fix missing NR_CPUS in menuconfig CRISv32: Avoid warning of unused variable CRIS: Avoid warning in cris mm/fault.c CRIS: Export csum_partial_copy_nocheck
Diffstat (limited to 'arch/cris/include/asm')
-rw-r--r--arch/cris/include/asm/uaccess.h170
1 files changed, 97 insertions, 73 deletions
diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h
index 914540801c5e..e3530d0f13ee 100644
--- a/arch/cris/include/asm/uaccess.h
+++ b/arch/cris/include/asm/uaccess.h
@@ -1,4 +1,4 @@
-/*
+/*
* Authors: Bjorn Wesen (bjornw@axis.com)
* Hans-Peter Nilsson (hp@axis.com)
*/
@@ -35,7 +35,7 @@
#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
/* addr_limit is the maximum accessible address for the task. we misuse
- * the KERNEL_DS and USER_DS values to both assign and compare the
+ * the KERNEL_DS and USER_DS values to both assign and compare the
* addr_limit values through the equally misnamed get/set_fs macros.
* (see above)
*/
@@ -47,12 +47,13 @@
#define get_fs() (current_thread_info()->addr_limit)
#define set_fs(x) (current_thread_info()->addr_limit = (x))
-#define segment_eq(a,b) ((a).seg == (b).seg)
+#define segment_eq(a, b) ((a).seg == (b).seg)
#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
-#define __user_ok(addr,size) (((size) <= TASK_SIZE)&&((addr) <= TASK_SIZE-(size)))
-#define __access_ok(addr,size) (__kernel_ok || __user_ok((addr),(size)))
-#define access_ok(type,addr,size) __access_ok((unsigned long)(addr),(size))
+#define __user_ok(addr, size) \
+ (((size) <= TASK_SIZE) && ((addr) <= TASK_SIZE-(size)))
+#define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size)))
+#define access_ok(type, addr, size) __access_ok((unsigned long)(addr), (size))
#include <arch/uaccess.h>
@@ -69,8 +70,7 @@
* on our cache or tlb entries.
*/
-struct exception_table_entry
-{
+struct exception_table_entry {
unsigned long insn, fixup;
};
@@ -92,56 +92,74 @@ struct exception_table_entry
* CRIS, we can just do these as direct assignments. (Of course, the
* exception handling means that it's no longer "just"...)
*/
-#define get_user(x,ptr) \
- __get_user_check((x),(ptr),sizeof(*(ptr)))
-#define put_user(x,ptr) \
- __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+#define get_user(x, ptr) \
+ __get_user_check((x), (ptr), sizeof(*(ptr)))
+#define put_user(x, ptr) \
+ __put_user_check((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
-#define __get_user(x,ptr) \
- __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
-#define __put_user(x,ptr) \
- __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+#define __get_user(x, ptr) \
+ __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+#define __put_user(x, ptr) \
+ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
extern long __put_user_bad(void);
-#define __put_user_size(x,ptr,size,retval) \
-do { \
- retval = 0; \
- switch (size) { \
- case 1: __put_user_asm(x,ptr,retval,"move.b"); break; \
- case 2: __put_user_asm(x,ptr,retval,"move.w"); break; \
- case 4: __put_user_asm(x,ptr,retval,"move.d"); break; \
- case 8: __put_user_asm_64(x,ptr,retval); break; \
- default: __put_user_bad(); \
- } \
+#define __put_user_size(x, ptr, size, retval) \
+do { \
+ retval = 0; \
+ switch (size) { \
+ case 1: \
+ __put_user_asm(x, ptr, retval, "move.b"); \
+ break; \
+ case 2: \
+ __put_user_asm(x, ptr, retval, "move.w"); \
+ break; \
+ case 4: \
+ __put_user_asm(x, ptr, retval, "move.d"); \
+ break; \
+ case 8: \
+ __put_user_asm_64(x, ptr, retval); \
+ break; \
+ default: \
+ __put_user_bad(); \
+ } \
} while (0)
-#define __get_user_size(x,ptr,size,retval) \
-do { \
- retval = 0; \
- switch (size) { \
- case 1: __get_user_asm(x,ptr,retval,"move.b"); break; \
- case 2: __get_user_asm(x,ptr,retval,"move.w"); break; \
- case 4: __get_user_asm(x,ptr,retval,"move.d"); break; \
- case 8: __get_user_asm_64(x,ptr,retval); break; \
- default: (x) = __get_user_bad(); \
- } \
+#define __get_user_size(x, ptr, size, retval) \
+do { \
+ retval = 0; \
+ switch (size) { \
+ case 1: \
+ __get_user_asm(x, ptr, retval, "move.b"); \
+ break; \
+ case 2: \
+ __get_user_asm(x, ptr, retval, "move.w"); \
+ break; \
+ case 4: \
+ __get_user_asm(x, ptr, retval, "move.d"); \
+ break; \
+ case 8: \
+ __get_user_asm_64(x, ptr, retval); \
+ break; \
+ default: \
+ (x) = __get_user_bad(); \
+ } \
} while (0)
-#define __put_user_nocheck(x,ptr,size) \
+#define __put_user_nocheck(x, ptr, size) \
({ \
long __pu_err; \
- __put_user_size((x),(ptr),(size),__pu_err); \
+ __put_user_size((x), (ptr), (size), __pu_err); \
__pu_err; \
})
-#define __put_user_check(x,ptr,size) \
-({ \
- long __pu_err = -EFAULT; \
- __typeof__(*(ptr)) *__pu_addr = (ptr); \
- if (access_ok(VERIFY_WRITE,__pu_addr,size)) \
- __put_user_size((x),__pu_addr,(size),__pu_err); \
- __pu_err; \
+#define __put_user_check(x, ptr, size) \
+({ \
+ long __pu_err = -EFAULT; \
+ __typeof__(*(ptr)) *__pu_addr = (ptr); \
+ if (access_ok(VERIFY_WRITE, __pu_addr, size)) \
+ __put_user_size((x), __pu_addr, (size), __pu_err); \
+ __pu_err; \
})
struct __large_struct { unsigned long buf[100]; };
@@ -149,21 +167,21 @@ struct __large_struct { unsigned long buf[100]; };
-#define __get_user_nocheck(x,ptr,size) \
+#define __get_user_nocheck(x, ptr, size) \
({ \
long __gu_err, __gu_val; \
- __get_user_size(__gu_val,(ptr),(size),__gu_err); \
- (x) = (__typeof__(*(ptr)))__gu_val; \
+ __get_user_size(__gu_val, (ptr), (size), __gu_err); \
+ (x) = (__force __typeof__(*(ptr)))__gu_val; \
__gu_err; \
})
-#define __get_user_check(x,ptr,size) \
+#define __get_user_check(x, ptr, size) \
({ \
long __gu_err = -EFAULT, __gu_val = 0; \
const __typeof__(*(ptr)) *__gu_addr = (ptr); \
- if (access_ok(VERIFY_READ,__gu_addr,size)) \
- __get_user_size(__gu_val,__gu_addr,(size),__gu_err); \
- (x) = (__typeof__(*(ptr)))__gu_val; \
+ if (access_ok(VERIFY_READ, __gu_addr, size)) \
+ __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
+ (x) = (__force __typeof__(*(ptr)))__gu_val; \
__gu_err; \
})
@@ -180,7 +198,7 @@ static inline unsigned long
__generic_copy_to_user(void __user *to, const void *from, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
- return __copy_user(to,from,n);
+ return __copy_user(to, from, n);
return n;
}
@@ -188,7 +206,7 @@ static inline unsigned long
__generic_copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
- return __copy_user_zeroing(to,from,n);
+ return __copy_user_zeroing(to, from, n);
return n;
}
@@ -196,7 +214,7 @@ static inline unsigned long
__generic_clear_user(void __user *to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
- return __do_clear_user(to,n);
+ return __do_clear_user(to, n);
return n;
}
@@ -210,6 +228,7 @@ static inline long
strncpy_from_user(char *dst, const char __user *src, long count)
{
long res = -EFAULT;
+
if (access_ok(VERIFY_READ, src, 1))
res = __do_strncpy_from_user(dst, src, count);
return res;
@@ -223,6 +242,7 @@ static inline unsigned long
__constant_copy_from_user(void *to, const void __user *from, unsigned long n)
{
unsigned long ret = 0;
+
if (n == 0)
;
else if (n == 1)
@@ -273,6 +293,7 @@ static inline unsigned long
__constant_copy_to_user(void __user *to, const void *from, unsigned long n)
{
unsigned long ret = 0;
+
if (n == 0)
;
else if (n == 1)
@@ -323,6 +344,7 @@ static inline unsigned long
__constant_clear_user(void __user *to, unsigned long n)
{
unsigned long ret = 0;
+
if (n == 0)
;
else if (n == 1)
@@ -350,20 +372,20 @@ __constant_clear_user(void __user *to, unsigned long n)
}
-#define clear_user(to, n) \
-(__builtin_constant_p(n) ? \
- __constant_clear_user(to, n) : \
- __generic_clear_user(to, n))
+#define clear_user(to, n) \
+ (__builtin_constant_p(n) ? \
+ __constant_clear_user(to, n) : \
+ __generic_clear_user(to, n))
-#define copy_from_user(to, from, n) \
-(__builtin_constant_p(n) ? \
- __constant_copy_from_user(to, from, n) : \
- __generic_copy_from_user(to, from, n))
+#define copy_from_user(to, from, n) \
+ (__builtin_constant_p(n) ? \
+ __constant_copy_from_user(to, from, n) : \
+ __generic_copy_from_user(to, from, n))
-#define copy_to_user(to, from, n) \
-(__builtin_constant_p(n) ? \
- __constant_copy_to_user(to, from, n) : \
- __generic_copy_to_user(to, from, n))
+#define copy_to_user(to, from, n) \
+ (__builtin_constant_p(n) ? \
+ __constant_copy_to_user(to, from, n) : \
+ __generic_copy_to_user(to, from, n))
/* We let the __ versions of copy_from/to_user inline, because they're often
* used in fast paths and have only a small space overhead.
@@ -373,29 +395,31 @@ static inline unsigned long
__generic_copy_from_user_nocheck(void *to, const void __user *from,
unsigned long n)
{
- return __copy_user_zeroing(to,from,n);
+ return __copy_user_zeroing(to, from, n);
}
static inline unsigned long
__generic_copy_to_user_nocheck(void __user *to, const void *from,
unsigned long n)
{
- return __copy_user(to,from,n);
+ return __copy_user(to, from, n);
}
static inline unsigned long
__generic_clear_user_nocheck(void __user *to, unsigned long n)
{
- return __do_clear_user(to,n);
+ return __do_clear_user(to, n);
}
/* without checking */
-#define __copy_to_user(to,from,n) __generic_copy_to_user_nocheck((to),(from),(n))
-#define __copy_from_user(to,from,n) __generic_copy_from_user_nocheck((to),(from),(n))
+#define __copy_to_user(to, from, n) \
+ __generic_copy_to_user_nocheck((to), (from), (n))
+#define __copy_from_user(to, from, n) \
+ __generic_copy_from_user_nocheck((to), (from), (n))
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
-#define __clear_user(to,n) __generic_clear_user_nocheck((to),(n))
+#define __clear_user(to, n) __generic_clear_user_nocheck((to), (n))
#define strlen_user(str) strnlen_user((str), 0x7ffffffe)