ALSA: hda - Get rid of magic digits for subdev hack

Define a proper const for a magic 31bit flag for subdev / NID setup
with a brief comment.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c0a98e724a25..eee3143eef75 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4324,7 +4324,7 @@ static int add_control(struct alc_spec *spec, int type, const char *name,
         if (!knew->name)
                 return -ENOMEM;
         if (get_amp_nid_(val))
-                knew->subdevice = (1<<31)|get_amp_nid_(val);
+                knew->subdevice = HDA_SUBDEV_NID_FLAG | get_amp_nid_(val);
         knew->private_value = val;
         return 0;
 }