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X-CSE-ConnectionGUID: g2L6TA0jStaIRryqT0pJ+g== X-CSE-MsgGUID: /oBih0iuSLaSqyLNfKfcpw== X-IronPort-AV: E=McAfee;i="6800,10657,11683"; a="80996334" X-IronPort-AV: E=Sophos;i="6.21,256,1763452800"; d="scan'208";a="80996334" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2026 00:42:04 -0800 X-CSE-ConnectionGUID: wk2UtoB7QVy0dBGh0OSUWQ== X-CSE-MsgGUID: ePFmdfQDQzuWfz7dHe99/w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,256,1763452800"; d="scan'208";a="212029328" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa003.jf.intel.com with ESMTP; 27 Jan 2026 00:42:02 -0800 Received: by black.igk.intel.com (Postfix, from userid 1001) id A2A0A98; Tue, 27 Jan 2026 09:42:01 +0100 (CET) Date: Tue, 27 Jan 2026 09:42:01 +0100 From: Mika Westerberg To: correctmost Cc: Andy Shevchenko , dmaengine@vger.kernel.org, regressions@lists.linux.dev, vkoul@kernel.org, linux-i2c@vger.kernel.org Subject: Re: [REGRESSION][BISECTED] Lenovo IdeaPad touchpad does not work when idma64 is present in initramfs Message-ID: <20260127084201.GA2275908@black.igk.intel.com> References: <20260121135803.GM2275908@black.igk.intel.com> <20260121150256.GN2275908@black.igk.intel.com> <20260122110021.GO2275908@black.igk.intel.com> <20260123063621.GP2275908@black.igk.intel.com> <5c5645eb-66b8-4419-a4e9-ba2672af2f40@app.fastmail.com> <20260126135353.GT2275908@black.igk.intel.com> <57727c07-33d5-4b52-abe2-4fdc2a7488b6@app.fastmail.com> Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <57727c07-33d5-4b52-abe2-4fdc2a7488b6@app.fastmail.com> On Tue, Jan 27, 2026 at 01:52:01AM -0500, correctmost wrote: > On Mon, Jan 26, 2026, at 8:53 AM, Mika Westerberg wrote: > > On Sat, Jan 24, 2026 at 10:38:14PM -0500, correctmost wrote: > >> I am seeing mixed results with those i2c config changes, depending on which modules are included in the initramfs image. > >> > >> Build info for both tests: > >> - Commit c072629f05d7 > >> - CONFIG_I2C_DESIGNWARE_CORE=m > >> - CONFIG_I2C_DESIGNWARE_PLATFORM=m > >> > >> --> Test 1 - Various i2c modules absent from initramfs > >> > >> Modules: > >> - drivers/dma/idma64.ko.zst present in initramfs > >> - drivers/hid/i2c-hid/{i2c-hid-acpi.ko.zst,i2c-hid.ko.zst} absent from initramfs > >> - drivers/i2c/busses/{i2c-designware-core.ko.zst,i2c-designware-platform.ko.zst,i2c-i801.ko.zst} absent from initramfs > >> - drivers/i2c/{i2c-mux.ko.zst,i2c-smbus.ko.zst} absent from initramfs > >> > >> Result: The touchpad works, but there are still IRQ #27 messages: > > > > And the touchpad is working fine after boot too? > > Yep, the touchpad seems to work fine in my desktop environment after booting and logging in. Can you do one more experiment? Add "modprobe.blacklist=idma64" in the command line too (keep everything else as they are now). Does the touchpad still work and do you still get the warning? Please share full dmesg.