Merge tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull nios2 updates from Ley Foon Tan:

 - nios2: Remove unnecessary #ifdef guards
 - nios2: Switch to generic __xchg()
 - nios2: Fix unused variable warning

* tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: Remove unnecessary #ifdef guards
  nios2: Switch to generic __xchg()
  nios2: Fix unused variable warning

arch/nios2/include/asm/cmpxchg.h

@@ -9,53 +9,6 @@
 #ifndef _ASM_NIOS2_CMPXCHG_H
 #define _ASM_NIOS2_CMPXCHG_H
 
-#include <linux/irqflags.h>
-
-#define xchg(ptr, x)	\
-	((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x)		((volatile struct __xchg_dummy *)(x))
-
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
-					int size)
-{
-	unsigned long tmp, flags;
-
-	local_irq_save(flags);
-
-	switch (size) {
-	case 1:
-		__asm__ __volatile__(
-			"ldb	%0, %2\n"
-			"stb	%1, %2\n"
-			: "=&r" (tmp)
-			: "r" (x), "m" (*__xg(ptr))
-			: "memory");
-		break;
-	case 2:
-		__asm__ __volatile__(
-			"ldh	%0, %2\n"
-			"sth	%1, %2\n"
-			: "=&r" (tmp)
-			: "r" (x), "m" (*__xg(ptr))
-			: "memory");
-		break;
-	case 4:
-		__asm__ __volatile__(
-			"ldw	%0, %2\n"
-			"stw	%1, %2\n"
-			: "=&r" (tmp)
-			: "r" (x), "m" (*__xg(ptr))
-			: "memory");
-		break;
-	}
-
-	local_irq_restore(flags);
-	return tmp;
-}
-
 #include <asm-generic/cmpxchg.h>
-#include <asm-generic/cmpxchg-local.h>
 
 #endif /* _ASM_NIOS2_CMPXCHG_H */

arch/nios2/kernel/setup.c

@@ -104,7 +104,7 @@ asmlinkage void __init nios2_boot_init(unsigned r4, unsigned r5, unsigned r6,
 				       unsigned r7)
 {
 	unsigned dtb_passed = 0;
-	char cmdline_passed[COMMAND_LINE_SIZE] = { 0, };
+	char cmdline_passed[COMMAND_LINE_SIZE] __maybe_unused = { 0, };
 
 #if defined(CONFIG_NIOS2_PASS_CMDLINE)
 	if (r4 == 0x534f494e) { /* r4 is magic NIOS */

arch/nios2/lib/memmove.c

@@ -10,7 +10,6 @@
 #include <linux/types.h>
 #include <linux/string.h>
 
-#ifdef __HAVE_ARCH_MEMMOVE
 void *memmove(void *d, const void *s, size_t count)
 {
 	unsigned long dst, src;
@@ -79,4 +78,3 @@ restdown:
 
 	return d;
 }
-#endif /* __HAVE_ARCH_MEMMOVE */

arch/nios2/lib/memset.c

@@ -10,7 +10,6 @@
 #include <linux/types.h>
 #include <linux/string.h>
 
-#ifdef __HAVE_ARCH_MEMSET
 void *memset(void *s, int c, size_t count)
 {
 	int destptr, charcnt, dwordcnt, fill8reg, wrkrega;
@@ -78,4 +77,3 @@ void *memset(void *s, int c, size_t count)
 
 	return s;
 }
-#endif /* __HAVE_ARCH_MEMSET */