ACPI: HMAT: use hotplug_memory_notifier() directly

Commit 76ae847497bc52 ("Documentation: raise minimum supported version of
GCC to 5.1") updated the minimum gcc version to 5.1.  So the problem
mentioned in f02c69680088 ("include/linux/memory.h: implement
register_hotmemory_notifier()") no longer exist.  So we can now switch to
use hotplug_memory_notifier() directly rather than
register_hotmemory_notifier().

Link: https://lkml.kernel.org/r/20220923033347.3935160-7-liushixin2@huawei.com
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Waiman Long <longman@redhat.com>
Cc: zefan li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
index 23f49a2f4d148d2fa6baa28d4d8ae6f4e8d0ae60..0ecefb6047348612482d184be688195dbda5900c 100644 (file)
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -767,11 +767,6 @@ static int hmat_callback(struct notifier_block *self,
        return NOTIFY_OK;
 }
 
-static struct notifier_block hmat_callback_nb = {
-       .notifier_call = hmat_callback,
-       .priority = 2,
-};
-
 static __init void hmat_free_structures(void)
 {
        struct memory_target *target, *tnext;
@@ -854,7 +849,7 @@ static __init int hmat_init(void)
        hmat_register_targets();
 
        /* Keep the table and structures if the notifier may use them */
-       if (!register_hotmemory_notifier(&hmat_callback_nb))
+       if (!hotplug_memory_notifier(hmat_callback, 2))
                return 0;
 out_put:
        hmat_free_structures();