From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A42EDEB64D9 for ; Mon, 19 Jun 2023 15:19:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229945AbjFSPTR (ORCPT ); Mon, 19 Jun 2023 11:19:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229711AbjFSPTQ (ORCPT ); Mon, 19 Jun 2023 11:19:16 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 558CB9B; Mon, 19 Jun 2023 08:19:15 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 0DB961F88B; Mon, 19 Jun 2023 15:19:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1687187954; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BxX0JR9pCiqX52Q86QN+MVAg4XLHJ++XGVzlT7hnH14=; b=g+YutJ0hLg8FV8N7BnfQi4VR/A8bq9g/lIidDNG3k4i1JkpFe+BJdnOx9ZuJ5XTqP61T7N wxfB9Ep1ev8uV0C/OhnGKTsF3xO3L5kSfjzV3gQ+d8mz7a/6Y+dmtpT7pAiQpBCcpZqapw tQik1aixlJIXoSQn2K+tarMHBd761rU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1687187954; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BxX0JR9pCiqX52Q86QN+MVAg4XLHJ++XGVzlT7hnH14=; b=bIQmVuT6O2DhUaekn7EDcUK8P+v+BH7/hZFFW81fcngvvWtsgrZIGgwABzZDRpCDmM+1yG XlEIW71I6CsfUmDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id DC759139C2; Mon, 19 Jun 2023 15:19:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id ps8TNPFxkGTDOwAAMHmgww (envelope-from ); Mon, 19 Jun 2023 15:19:13 +0000 Date: Mon, 19 Jun 2023 17:19:12 +0200 From: Jean Delvare To: Marius Hoch Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] i2c: i801: Force no IRQ for Dell Latitude E7450 Message-ID: <20230619171912.5407a7eb@endymion.delvare> In-Reply-To: <967411b3-7013-619e-4fef-90644fa8d489@mariushoch.de> References: <20230514103634.235917-1-mail@mariushoch.de> <20230523200350.62ab4788@endymion.delvare> <59a6a917-2a93-d52d-37f3-091295dd0db4@mariushoch.de> <20230604160132.102dd6a7@endymion.delvare> <967411b3-7013-619e-4fef-90644fa8d489@mariushoch.de> Organization: SUSE Linux X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.34; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org On Sun, 18 Jun 2023 15:42:40 +0200, Marius Hoch wrote: > I just booted with acpi=3Dnoirq, the PCI device no longer fails to be=20 > enabled and the device got assigned IRQ 19 now (according to lspci -v/=20 > proc/interrupts), while the freefall device remained at IRQ 18. > Interestingly dmesg is full of spam from the freefall device (endlessly=20 > reporting that freefall got detected, probably indicating a problem in=20 > IRQ handling, yikes). Unfortunately, while acpi=3Dnoirq can be useful for testing purposes and bug investigation, there's no guarantee that a modern x86 system can actually work properly without ACPI-based PCI routing. > Booting without the smo8800 module results in: > [root@fedora ~]# dmesg | grep -i smbus > [=C2=A0=C2=A0 20.042515] i801_smbus 0000:00:1f.3: PCI->APIC IRQ transform= : INT C=20 > -> IRQ 19 =20 > [=C2=A0=C2=A0 20.042548] i801_smbus 0000:00:1f.3: SPD Write Disable is set > [=C2=A0=C2=A0 20.042574] i801_smbus 0000:00:1f.3: SMBus using PCI interru= pt > [=C2=A0=C2=A0 20.051270] i801_smbus 0000:00:1f.3: Accelerometer lis3lv02d= is=20 > present on SMBus but its address is unknown, skipping registration > [=C2=A0=C2=A0 20.253942] i801_smbus 0000:00:1f.3: Transaction timeout > [=C2=A0=C2=A0 20.461962] i801_smbus 0000:00:1f.3: Transaction timeout >=20 > The "Transaction timeout" messages might indicate that interrupt routing= =20 > isn't actually working? Indeed. This means the driver waited for an interrupt but was never called back. --=20 Jean Delvare SUSE L3 Support