Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes/cleanups from Catalin Marinas:
 "Some fixes that turned up during the merge window:

   - Add brackets to the io_stop_wc macro

   - Avoid -Warray-bounds warning with the LSE atomics inline asm

   - Apply __ro_after_init to memory_limit"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: apply __ro_after_init to memory_limit
  arm64: atomics: lse: Dereference matching size
  asm-generic: Add missing brackets for io_stop_wc macro

Author: torvalds

arch/arm64/include/asm/atomic_lse.h

@@ -249,7 +249,7 @@ __lse__cmpxchg_case_##name##sz(volatile void *ptr,			\
 	"	mov	%" #w "[tmp], %" #w "[old]\n"			\
 	"	cas" #mb #sfx "\t%" #w "[tmp], %" #w "[new], %[v]\n"	\
 	"	mov	%" #w "[ret], %" #w "[tmp]"			\
-	: [ret] "+r" (x0), [v] "+Q" (*(unsigned long *)ptr),		\
+	: [ret] "+r" (x0), [v] "+Q" (*(u##sz *)ptr),			\
 	  [tmp] "=&r" (tmp)						\
 	: [old] "r" (x1), [new] "r" (x2)				\
 	: cl);								\

arch/arm64/include/asm/cmpxchg.h

@@ -243,7 +243,7 @@ static inline void __cmpwait_case_##sz(volatile void *ptr,		\
 	"	cbnz	%" #w "[tmp], 1f\n"				\
 	"	wfe\n"							\
 	"1:"								\
-	: [tmp] "=&r" (tmp), [v] "+Q" (*(unsigned long *)ptr)		\
+	: [tmp] "=&r" (tmp), [v] "+Q" (*(u##sz *)ptr)			\
 	: [val] "r" (val));						\
 }
 

arch/arm64/mm/init.c

@@ -172,7 +172,7 @@ int pfn_is_map_memory(unsigned long pfn)
 }
 EXPORT_SYMBOL(pfn_is_map_memory);
 
-static phys_addr_t memory_limit = PHYS_ADDR_MAX;
+static phys_addr_t memory_limit __ro_after_init = PHYS_ADDR_MAX;
 
 /*
  * Limit the memory size that was specified via FDT.

include/asm-generic/barrier.h

@@ -285,7 +285,7 @@ do {									\
  * write-combining memory accesses before this macro with those after it.
  */
 #ifndef io_stop_wc
-#define io_stop_wc do { } while (0)
+#define io_stop_wc() do { } while (0)
 #endif
 
 #endif /* !__ASSEMBLY__ */