xen/spinlock: make spinlock initializers more readable

Use named member initializers instead of positional ones for the macros
used to initialize structures.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/include/xen/spinlock.h

@@ -21,7 +21,7 @@ union lock_debug {
         bool unseen:1;
     };
 };
-#define _LOCK_DEBUG { LOCK_DEBUG_INITVAL }
+#define _LOCK_DEBUG { .val = LOCK_DEBUG_INITVAL }
 void check_lock(union lock_debug *debug, bool try);
 void lock_enter(const union lock_debug *debug);
 void lock_exit(const union lock_debug *debug);
@@ -94,12 +94,16 @@ struct lock_profile_qhead {
     int32_t                   idx;     /* index for printout */
 };
 
-#define _LOCK_PROFILE(name) { NULL, #name, &name, 0, 0, 0, 0, 0 }
+#define _LOCK_PROFILE(lockname) { .name = #lockname, .lock = &lockname, }
 #define _LOCK_PROFILE_PTR(name)                                               \
     static struct lock_profile * const __lock_profile_##name                  \
     __used_section(".lockprofile.data") =                                     \
     &__lock_profile_data_##name
-#define _SPIN_LOCK_UNLOCKED(x) { { 0 }, SPINLOCK_NO_CPU, 0, _LOCK_DEBUG, x }
+#define _SPIN_LOCK_UNLOCKED(x) {                                              \
+    .recurse_cpu = SPINLOCK_NO_CPU,                                           \
+    .debug =_LOCK_DEBUG,                                                      \
+    .profile = x,                                                             \
+}
 #define SPIN_LOCK_UNLOCKED _SPIN_LOCK_UNLOCKED(NULL)
 #define DEFINE_SPINLOCK(l)                                                    \
     spinlock_t l = _SPIN_LOCK_UNLOCKED(NULL);                                 \
@@ -142,7 +146,10 @@ extern void cf_check spinlock_profile_reset(unsigned char key);
 
 struct lock_profile_qhead { };
 
-#define SPIN_LOCK_UNLOCKED { { 0 }, SPINLOCK_NO_CPU, 0, _LOCK_DEBUG }
+#define SPIN_LOCK_UNLOCKED {                                                  \
+    .recurse_cpu = SPINLOCK_NO_CPU,                                           \
+    .debug =_LOCK_DEBUG,                                                      \
+}
 #define DEFINE_SPINLOCK(l) spinlock_t l = SPIN_LOCK_UNLOCKED
 
 #define spin_lock_init_prof(s, l) spin_lock_init(&((s)->l))