From: Takashi Iwai <tiwai@suse.de>
To: "Cássio Gabriel" <cassiogabrielcontato@gmail.com>
Cc: Takashi Iwai <tiwai@suse.com>, Jaroslav Kysela <perex@perex.cz>,
Sergiy Kovalchuk <cnb_zerg@yahoo.com>,
linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH] ALSA: usb-audio: Avoid false E-MU sample-rate notifications
Date: Wed, 22 Apr 2026 17:52:45 +0200 [thread overview]
Message-ID: <87ik9j3sc2.wl-tiwai@suse.de> (raw)
In-Reply-To: <20260421-alsa-emuusb-samplerate-notify-v1-1-8b63bbc1d7f1@gmail.com>
On Wed, 22 Apr 2026 02:53:52 +0200,
Cássio Gabriel wrote:
>
> snd_emuusb_set_samplerate() unconditionally notifies the E-MU
> SampleRate Extension Unit control after issuing SET_CUR.
>
> If snd_usb_mixer_set_ctl_value() fails, the control value has not
> changed, yet snd_usb_mixer_notify_id() still invalidates the cache and
> emits a value-change event to userspace.
>
> Notify the control only after a successful write.
>
> Fixes: 7d2b451e65d2 ("ALSA: usb-audio - Added functionality for E-mu 0404USB/0202USB/TrackerPre")
> Cc: stable@vger.kernel.org
> Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Thanks, applied now.
Takashi
prev parent reply other threads:[~2026-04-22 15:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-22 0:53 [PATCH] ALSA: usb-audio: Avoid false E-MU sample-rate notifications Cássio Gabriel
2026-04-22 15:52 ` Takashi Iwai [this message]
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