From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC0B827F01C for ; Wed, 18 Jun 2025 14:06:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750255577; cv=none; b=m1W6ODZ/f6STaJpO5guN7GskU/kMSax75XYFnKmhGMgLZuwrLN6IJMhclZYdyZS1HNZwKKMnqad8vOOiq3yztQNMT2G7rbzVVnxd7k+/UUpcUu6ytdUZc3KqIxoelCvYekcGOgf0xHg3JkQ9j7L/RDn0d42JOuxIFOse7aWvOxw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750255577; c=relaxed/simple; bh=F+z3MjGV4TaCyb77dWy2XEtcmuTfBFweoyGTmfosw2k=; h=MIME-Version:Date:From:To:Cc:Subject:In-Reply-To:References: Message-ID:Content-Type; b=T0Xcvy4o2xU7Ec3ieKIZ/rIrynujulePiC3fHAkRp0XIXmBfCcUfTvnGzhNBYeTJONQ/Lr9TiLHPhub+3J+cxMgcurzidbuitVVHH62zmHTxVVsmJE39JY546Y9/QFcN2lWyG2luyY/zQ/hp3Odp/lj0PzGtrVvnLmdkSEVAQnw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=RbLS+nEL; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="RbLS+nEL" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 5C180256DF; Wed, 18 Jun 2025 16:06:14 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id arg8hl3w8vFY; Wed, 18 Jun 2025 16:06:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1750255573; bh=F+z3MjGV4TaCyb77dWy2XEtcmuTfBFweoyGTmfosw2k=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=RbLS+nELQwq7MsUtGmmRxWu4zbFot/+uRZZvrKaZLQ2Ez/1Gb9qDwHVa0JeTCahLF o5Febd3cxIBcuMPLbfuK4nFyHvLCUwmz3t1Kv1FMMzuP2LNyblLKtQATP4cbGjnnDZ FJpBk9XORLf8RjbSESf8+PAsDlsrUoU/2PmmZ2+2z1ePDEcgbNl5VPsG9FQQQagyfF GHJxnlOMEg4vnk0Y6dPBGNjkK94ewGVXCTt+F0bBZJYdnmw0pG3OHpNDImRdjSl6lE q7822OQ7EXXZC0kOadB3uWjYJcWUC3jR1LCm/jDapcRclTrbvKvnVPsBPlmh3ALApG ojLQGnYGVPDsg== Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Wed, 18 Jun 2025 14:06:13 +0000 From: Kaustabh Chakraborty To: Marek Szyprowski , Joerg Roedel , Will Deacon , Robin Murphy , Inki Dae , Seung-Woo Kim , Kyungmin Park Cc: iommu@lists.linux.dev, dri-devel@lists.freedesktop.org Subject: Re: Help: Samsung Exynos 7870 DECON SYSMMU panic In-Reply-To: <544ad69cba52a9b87447e3ac1c7fa8c3@disroot.org> References: <544ad69cba52a9b87447e3ac1c7fa8c3@disroot.org> Message-ID: <919fce023f7b8137dc69d0d55ed7edde@disroot.org> X-Sender: kauschluss@disroot.org Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit On 2025-06-18 14:02, Kaustabh Chakraborty wrote: > Since bcb81ac6ae3c (iommu: Get DT/ACPI parsing into the proper probe > path), > The Samsung Exynos 7870 DECON device (with patches [1], [2], and [3]) > seems > to not work anymore. Upon closer inspection, I observe that there is an > IOMMU crash. > > [...] > > - dev->bus->dma_configure(dev); > + if (!strcmp(dev_name(dev), "14830000.decon")) s/!//