[PATCH 6.18 155/314] ALSA: doc: usb-audio: Add doc for QUIRK_FLAG_SKIP_IFACE_SETUP

Sasha Levin
2026-03-10T11:27:08Z

From: Rong Zhang <i@rong.moe>

commit 93992667d0ab695ac30ceec91a516fd4bf725d75 upstream.

QUIRK_FLAG_SKIP_IFACE_SETUP was introduced into usb-audio before without
appropriate documentation, so add it.

Fixes: 38c322068a26 ("ALSA: usb-audio: Add QUIRK_FLAG_SKIP_IFACE_SETUP")
Cc: stable@vger.kernel.org
Signed-off-by: Rong Zhang <i@rong.moe>
Link: https://patch.msgid.link/20260302173300.322673-1-i@rong.moe
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/sound/alsa-configuration.rst | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst
index 0a4eaa7d66ddd..55b845d382368 100644
--- a/Documentation/sound/alsa-configuration.rst
+++ b/Documentation/sound/alsa-configuration.rst
@@ -2372,6 +2372,10 @@ quirk_flags
audible volume
* bit 25: ``mixer_capture_min_mute``
Similar to bit 24 but for capture streams
+ * bit 26: ``skip_iface_setup``
+ Skip the probe-time interface setup (usb_set_interface,
+ init_pitch, init_sample_rate); redundant with
+ snd_usb_endpoint_prepare() at stream-open time

This module supports multiple devices, autoprobe and hotplugging.

--
2.51.0