linux-kernel - [PATCH 2/6] ALSA: usb-audio: Use snd_ctl

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Date:   Thu, 20 Oct 2022 22:46:22 +0200
From:   "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/6] ALSA: usb-audio: Use snd_ctl_rename() to rename a control

From: "Maciej S. Szmigiero" <maciej.szmigiero@...cle.com>

With the recent addition of hashed controls lookup it's not enough to just
update the control name field, the hash entries for the modified control
have to be updated too.

snd_ctl_rename() takes care of that, so use it instead of directly
modifying the control name.

Fixes: c27e1efb61c5 ("ALSA: control: Use xarray for faster lookups")
Cc: stable@...r.kernel.org
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@...cle.com>
---
 sound/usb/mixer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index a5641956ef102..9105ec623120a 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1631,7 +1631,7 @@ static void check_no_speaker_on_headset(struct snd_kcontrol *kctl,
 	if (!found)
 		return;

-	strscpy(kctl->id.name, "Headphone", sizeof(kctl->id.name));
+	snd_ctl_rename(card, kctl, "Headphone");
 }

 static const struct usb_feature_control_info *get_feature_control_info(int control)