From patchwork Thu May 18 09:30:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oswald Buddenhagen X-Patchwork-Id: 13246344 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6E02FC77B7A for ; Thu, 18 May 2023 09:33:02 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 59FCD825; Thu, 18 May 2023 11:32:09 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 59FCD825 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1684402379; bh=IKtUXiqjFErbBpTVz1IKxqbqMyd4g79zylrYhZYYcfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=vm9jRmIpYzKt2ogowL3/ILFABL5MRsLjun3waZgKHO7uKqYiIIWlKC4B59yanBgCv r/NHte2h+N8paJ8KbndiANhwV2oHxaTLdPu5NP4K+wrB7R6AoOAyyYQ7LGsqDL2Vgc voZfx3+WyaxTESss4IIvO7ndAAzdB3LDMqCRaoRQ= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 34B1DF80588; Thu, 18 May 2023 11:31:03 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id BF095F80580; Thu, 18 May 2023 11:31:02 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 53966F80552; Thu, 18 May 2023 11:30:56 +0200 (CEST) Received: from bluemchen.kde.org (bluemchen.kde.org [209.51.188.41]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 05F22F802E8 for ; Thu, 18 May 2023 11:30:48 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 05F22F802E8 Received: from ugly.fritz.box (localhost [127.0.0.1]) by bluemchen.kde.org (Postfix) with ESMTP id 7731224208; Thu, 18 May 2023 05:30:47 -0400 (EDT) Received: by ugly.fritz.box (masqmail 0.3.4, from userid 1000) id 1pzZyB-Vzp-00; Thu, 18 May 2023 11:30:47 +0200 From: Oswald Buddenhagen To: alsa-devel@alsa-project.org Cc: Takashi Iwai , Jaroslav Kysela Subject: [PATCH 4/4] ALSA: emu10k1: fix handling of half-loop interrupts Date: Thu, 18 May 2023 11:30:47 +0200 Message-Id: <20230518093047.3697887-4-oswald.buddenhagen@gmx.de> X-Mailer: git-send-email 2.40.0.152.g15d061e6df In-Reply-To: <20230518093047.3697887-1-oswald.buddenhagen@gmx.de> References: <20230518093047.3697887-1-oswald.buddenhagen@gmx.de> MIME-Version: 1.0 Message-ID-Hash: VGZMVH3ZZKQOXJPENKC4OZDSL32TSMAU X-Message-ID-Hash: VGZMVH3ZZKQOXJPENKC4OZDSL32TSMAU X-MailFrom: ossi@kde.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: We'd try to iterate the voices twice without resetting the pointer. This went unnoticed, because the code isn't actually in use. Amends commit 27ae958cf6 ("emu10k1 driver - add multichannel device hw:x,3 [2-8/8]"). Signed-off-by: Oswald Buddenhagen --- sound/pci/emu10k1/irq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/pci/emu10k1/irq.c b/sound/pci/emu10k1/irq.c index 7dc803aaa850..a813ef8c2f8d 100644 --- a/sound/pci/emu10k1/irq.c +++ b/sound/pci/emu10k1/irq.c @@ -47,12 +47,13 @@ irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE); } if (status & IPR_CHANNELLOOP) { + struct snd_emu10k1_voice *pvoice; int voice; int voice_max = status & IPR_CHANNELNUMBERMASK; u32 val; - struct snd_emu10k1_voice *pvoice = emu->voices; val = snd_emu10k1_ptr_read(emu, CLIPL, 0); + pvoice = emu->voices; for (voice = 0; voice <= voice_max; voice++) { if (voice == 0x20) val = snd_emu10k1_ptr_read(emu, CLIPH, 0); @@ -68,6 +69,7 @@ irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) pvoice++; } val = snd_emu10k1_ptr_read(emu, HLIPL, 0); + pvoice = emu->voices; for (voice = 0; voice <= voice_max; voice++) { if (voice == 0x20) val = snd_emu10k1_ptr_read(emu, HLIPH, 0);