From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 321523E1233; Thu, 1 Oct 2026 07:05:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790838314; cv=none; b=hwfuVgxH0x31EGeA0l7xqwMg0cFy79+JaS+VLg4jHvGo8i4pE8ILjD88B5/A/y5Zo6xIS0rpGLUZT8PHlqvQDzuT2jrR724jMV3DLSO3CrAmQ1GMU0NYbJTCzElSgBiuVAYSsZI/XPwxHDFKOX41VC4hNgT3qBRV101JGHViM1A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790838314; c=relaxed/simple; bh=kAzdru/C0A6ARNZbdes3zuIadmsgrU/V3oc7IQnzo7g=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=uY6Ps1247nweH7WS1Fnabjl3f0pMWT5XPjo393avYS1Cn5XCp40sBNxe/thynut/5Zpy2j9AJvC08fGjGvx5TB1peVLLgsRdhrmIM9R4CQrdB32dbB6yk4oRU5sQWbMZev1KP69JtW7s+gf4MxhUr/pfB21GuiiXcb2iCjhP+BM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=itpg7SUP; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="itpg7SUP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1790838312; x=1822374312; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=kAzdru/C0A6ARNZbdes3zuIadmsgrU/V3oc7IQnzo7g=; b=itpg7SUPuPfFjbywI4e5VnTGVHKUV4Bbrl9GYyIktInCadQ+jHN/W21l DUBQWSaWjT+svaywMxu6B+9poMJ0g0n+BrB26vOlt2oq+giEbFA0QHER2 kKdGm2iI9QwpJxNuyfrqMwpZslBt2ysvcH+jdSDMKPa1WuHRSOVSG5g7/ MQt003R/uQ02wB9kHago6RRz9Qn+vdu5NDJVaW/zicgy+BaILq4Ix0rXM P2avNFBeoKW7q3MxvQjjMe+RWdR2+x6/q+TvJbaRMzMvjsP1AoSweo3aS Ulv6EMj1n8qNYkhLNoZjobAN5rcEVJyEkuD10c/aY/o61iaoBWy6eg/uN w==; X-CSE-ConnectionGUID: r0pzhX1ATb+Fo4uf+/aImA== X-CSE-MsgGUID: ZwMfxQprRUu52qeTVTvGpg== X-IronPort-AV: E=McAfee;i="6800,10657,11921"; a="109070855" X-IronPort-AV: E=Sophos;i="6.27,134,1787036400"; d="scan'208";a="109070855" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Oct 2026 00:05:11 -0700 X-CSE-ConnectionGUID: 4Ux6PACETFaFUPRvix9ing== X-CSE-MsgGUID: AZ3dHKneQ0ejsXukcNZ9DA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,134,1787036400"; d="scan'208";a="305424184" Received: from abityuts-desk1.ger.corp.intel.com (HELO localhost) ([10.245.244.27]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Oct 2026 00:05:08 -0700 Date: Thu, 1 Oct 2026 10:05:05 +0300 From: Andy Shevchenko To: Thierry Chatard Cc: linux-kernel@vger.kernel.org, hansg@kernel.org, lee@kernel.org, platform-driver-x86@vger.kernel.org, ilpo.jarvinen@linux.intel.com, djrscally@gmail.com, dan.scally@ideasonboard.com, linux-media@vger.kernel.org, mchehab@kernel.org, sakari.ailus@linux.intel.com, jacopo.mondi@ideasonboard.com, nicholas@rothemail.net, v.vitovt@gmail.com, dmanresa@gmail.com Subject: Re: [PATCH v11 1/9] mfd: intel-lpss: add resource conflict quirk for Dell Latitude 5285 Message-ID: References: <20260930214321.600863-1-tchatard@gmail.com> <20260930214321.600863-2-tchatard@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260930214321.600863-2-tchatard@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Wed, Sep 30, 2026 at 02:43:13PM -0700, Thierry Chatard wrote: > The Dell Latitude 5285 2-in-1 has a BIOS bug where the ACPI GEXP device > and the I2C4 controller (INT3446) both claim the same MMIO region via the > shared SB04 variable. This causes intel_lpss_acpi to fail binding to I2C4 > with -EBUSY, preventing the front camera (OV5670) sensor from being > registered. > > Match the affected machine by DMI and the affected device by ACPI ID, > carrying QUIRK_IGNORE_RESOURCE_CONFLICTS in the ACPI match data and > applying it to the per-device info in probe. This follows the quirk > organisation used by the PCI counterpart. > Assisted-by: Claude Code:claude-opus-4-8 Assisted-by: LLM ... > +/* > + * Devices that need a quirk applied only on the machines matched by > + * intel_lpss_quirk_dmi[] below. The quirk to apply is carried in the > + * matching entry's driver_data. > + */ > +static const struct acpi_device_id intel_lpss_acpi_quirk_ids[] = { > + /* Dell Latitude 5285: ACPI GEXP device conflicts with I2C4 (INT3446) */ > + { "INT3446", QUIRK_IGNORE_RESOURCE_CONFLICTS }, While at it, please move to use C99 initialisers. > + { } > +}; -- With Best Regards, Andy Shevchenko