Merge tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "The main content for 5.15 is a series that cleans up the handling of
  strncpy_from_user() and strnlen_user(), removing a lot of slightly
  incorrect versions of these in favor of the lib/strn*.c helpers that
  implement these correctly and more efficiently.

  The only architectures that retain a private version now are mips,
  ia64, um and parisc. I had offered to convert those at all, but Thomas
  Bogendoerfer wanted to keep the mips version for the moment until he
  had a chance to do regression testing.

  The branch also contains two patches for bitops and for ffs()"

* tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  bitops/non-atomic: make @nr unsigned to avoid any DIV
  asm-generic: ffs: Drop bogus reference to ffz location
  asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols
  asm-generic: remove extra strn{cpy_from,len}_user declarations
  asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user
  s390: use generic strncpy/strnlen from_user
  microblaze: use generic strncpy/strnlen from_user
  csky: use generic strncpy/strnlen from_user
  arc: use generic strncpy/strnlen from_user
  hexagon: use generic strncpy/strnlen from_user
  h8300: remove stale strncpy_from_user
  asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user

include/asm-generic/bitops/builtin-ffs.h

@@ -8,7 +8,7 @@
  *
  * This is defined the same way as
  * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
+ * differs in spirit from ffz (man ffs).
  */
 #define ffs(x) __builtin_ffs(x)
 

include/asm-generic/bitops/ffs.h

@@ -8,7 +8,7 @@
  *
  * This is defined the same way as
  * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
+ * differs in spirit from ffz (man ffs).
  */
 static inline int ffs(int x)
 {

include/asm-generic/bitops/non-atomic.h

@@ -14,7 +14,7 @@
  * may be that only one operation succeeds.
  */
 static __always_inline void
-arch___set_bit(int nr, volatile unsigned long *addr)
+arch___set_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -24,7 +24,7 @@ arch___set_bit(int nr, volatile unsigned long *addr)
 #define __set_bit arch___set_bit
 
 static __always_inline void
-arch___clear_bit(int nr, volatile unsigned long *addr)
+arch___clear_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -43,7 +43,7 @@ arch___clear_bit(int nr, volatile unsigned long *addr)
  * may be that only one operation succeeds.
  */
 static __always_inline
-void arch___change_bit(int nr, volatile unsigned long *addr)
+void arch___change_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -62,7 +62,7 @@ void arch___change_bit(int nr, volatile unsigned long *addr)
  * but actually fail.  You must protect multiple accesses with a lock.
  */
 static __always_inline int
-arch___test_and_set_bit(int nr, volatile unsigned long *addr)
+arch___test_and_set_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -83,7 +83,7 @@ arch___test_and_set_bit(int nr, volatile unsigned long *addr)
  * but actually fail.  You must protect multiple accesses with a lock.
  */
 static __always_inline int
-arch___test_and_clear_bit(int nr, volatile unsigned long *addr)
+arch___test_and_clear_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -96,7 +96,7 @@ arch___test_and_clear_bit(int nr, volatile unsigned long *addr)
 
 /* WARNING: non atomic and it can be reordered! */
 static __always_inline int
-arch___test_and_change_bit(int nr, volatile unsigned long *addr)
+arch___test_and_change_bit(unsigned int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -113,7 +113,7 @@ arch___test_and_change_bit(int nr, volatile unsigned long *addr)
  * @addr: Address to start counting from
  */
 static __always_inline int
-arch_test_bit(int nr, const volatile unsigned long *addr)
+arch_test_bit(unsigned int nr, const volatile unsigned long *addr)
 {
 	return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
 }