ALSA: Replace the magic number 44 with const

The char arrays with size 44 are for the name string of
snd_ctl_elem_id.  Define the constant and replace the raw numbers with
it for clarifying better.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h
index e3983d508272..041203f20f6d 100644
--- a/include/uapi/sound/asound.h
+++ b/include/uapi/sound/asound.h
@@ -817,6 +817,8 @@ typedef int __bitwise snd_ctl_elem_iface_t;
 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 
+#define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
+
 struct snd_ctl_elem_id {
         unsigned int numid;             /* numeric identifier, zero = invalid */
         snd_ctl_elem_iface_t iface;     /* interface identifier */