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From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.de>,
	Claudiu Beznea <claudiu.beznea@microchip.com>,
	Mark Brown <broonie@kernel.org>
Subject: [PATCH 03/11] ASoC: atmel: mchp-pdmc: Use snd_ctl_remove_id()
Date: Tue, 18 Jul 2023 16:12:56 +0200	[thread overview]
Message-ID: <20230718141304.1032-4-tiwai@suse.de> (raw)
In-Reply-To: <20230718141304.1032-1-tiwai@suse.de>

Use the standard snd_ctl_remove_id() helper instead of open code for
removing a kctl.  This helps for avoiding possible races.

Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/atmel/mchp-pdmc.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/sound/soc/atmel/mchp-pdmc.c b/sound/soc/atmel/mchp-pdmc.c
index c79c73e6791e..1a069f4cdcda 100644
--- a/sound/soc/atmel/mchp-pdmc.c
+++ b/sound/soc/atmel/mchp-pdmc.c
@@ -386,7 +386,6 @@ static int mchp_pdmc_open(struct snd_soc_component *component,
 	for (i = 0; i < ARRAY_SIZE(mchp_pdmc_snd_controls); i++) {
 		const struct snd_kcontrol_new *control = &mchp_pdmc_snd_controls[i];
 		struct snd_ctl_elem_id id;
-		struct snd_kcontrol *kctl;
 		int err;
 
 		if (component->name_prefix)
@@ -400,17 +399,10 @@ static int mchp_pdmc_open(struct snd_soc_component *component,
 		id.device = control->device;
 		id.subdevice = control->subdevice;
 		id.index = control->index;
-		kctl = snd_ctl_find_id(component->card->snd_card, &id);
-		if (!kctl) {
-			dev_err(component->dev, "Failed to find %s\n", control->name);
-			continue;
-		}
-		err = snd_ctl_remove(component->card->snd_card, kctl);
-		if (err < 0) {
+		err = snd_ctl_remove_id(component->card->snd_card, &id);
+		if (err < 0)
 			dev_err(component->dev, "%d: Failed to remove %s\n", err,
 				control->name);
-			continue;
-		}
 	}
 
 	return 0;
-- 
2.35.3


  parent reply	other threads:[~2023-07-18 14:14 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-18 14:12 [PATCH 00/11] ALSA: Make control API taking controls_rwsem consistently Takashi Iwai
2023-07-18 14:12 ` [PATCH 01/11] ALSA: control: Take card->controls_rwsem in snd_ctl_rename() Takashi Iwai
2023-07-18 14:12 ` [PATCH 02/11] staging: greybus: audio_helper: Use snd_ctl_remove_id() Takashi Iwai
2023-07-18 18:00   ` Greg Kroah-Hartman
2023-07-18 14:12 ` Takashi Iwai [this message]
2023-07-18 14:45   ` [PATCH 03/11] ASoC: atmel: mchp-pdmc: " claudiu beznea
2023-07-18 14:59   ` Mark Brown
2023-07-18 14:12 ` [PATCH 04/11] ALSA: control: Take controls_rwsem lock in snd_ctl_remove() Takashi Iwai
2023-07-18 14:12 ` [PATCH 05/11] ALSA: control: Add lockdep warning to internal functions Takashi Iwai
2023-07-18 14:12 ` [PATCH 06/11] ASoC: sigmadsp: Simplify with snd_ctl_activate_id() Takashi Iwai
2023-07-18 14:58   ` Mark Brown
2023-07-18 14:13 ` [PATCH 07/11] staging: greybus: Avoid abusing controls_rwsem Takashi Iwai
2023-07-18 18:00   ` Greg Kroah-Hartman
2023-07-18 14:13 ` [PATCH 08/11] ALSA: control: Make snd_ctl_find_id() argument const Takashi Iwai
2023-07-18 14:13 ` [PATCH 09/11] ALSA: control: Introduce unlocked version for snd_ctl_find_*() helpers Takashi Iwai
2023-07-18 14:13 ` [PATCH 10/11] ALSA: control: Take lock in snd_ctl_find_id() and snd_ctl_find_numid() Takashi Iwai
2023-07-19 10:20   ` Oswald Buddenhagen
2023-07-19 10:45     ` Takashi Iwai
2023-07-18 14:13 ` [PATCH 11/11] ALSA: emu10k1: Go back and simplify with snd_ctl_find_id() Takashi Iwai
2023-07-20  8:16 ` [PATCH 00/11] ALSA: Make control API taking controls_rwsem consistently Takashi Iwai

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