From 58ce2fb83314dd23c1ae8de42155b40a7d77b6c0 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 13 Feb 2023 14:34:01 +0800 Subject: [PATCH] ALSA: usb-audio: Register card again for iface over delayed_register option stable inclusion from stable-v5.10.143 commit 6ccbb74801bbcba94697743adbc917352aef2a9d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0U6 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6ccbb74801bbcba94697743adbc917352aef2a9d -------------------------------- [ Upstream commit 2027f114686e0f3f1f39971964dfc618637c88c2 ] When the delayed registration is specified via either delayed_register option or the quirk, we delay the invocation of snd_card_register() until the given interface. But if a wrong value has been set there and there are more interfaces over the given interface number, snd_card_register() call would be missing for those interfaces. This patch catches up those missing calls by fixing the comparison of the interface number. Now the call is skipped only if the processed interface is less than the given interface, instead of the exact match. Fixes: b70038ef4fea ("ALSA: usb-audio: Add delayed_register option") Link: https://bugzilla.kernel.org/show_bug.cgi?id=216082 Link: https://lore.kernel.org/r/20220831125901.4660-2-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin Signed-off-by: Jialin Zhang Reviewed-by: Zheng Zengkai --- sound/usb/card.c | 2 +- sound/usb/quirks.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/usb/card.c b/sound/usb/card.c index a3e06a71cf35..6b172db58a31 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -667,7 +667,7 @@ static bool check_delayed_register_option(struct snd_usb_audio *chip, int iface) if (delayed_register[i] && sscanf(delayed_register[i], "%x:%x", &id, &inum) == 2 && id == chip->usb_id) - return inum != iface; + return iface < inum; } return false; diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 6333a2ecb848..41f5d8242478 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1911,7 +1911,7 @@ bool snd_usb_registration_quirk(struct snd_usb_audio *chip, int iface) for (q = registration_quirks; q->usb_id; q++) if (chip->usb_id == q->usb_id) - return iface != q->interface; + return iface < q->interface; /* Register as normal */ return false; -- GitLab