From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793878980; b=PXPIfd/kD8d1isUquRVUhZxJMqitTJtF74xr1kxJ+4N4sLRH9ZGzz9u0uYqT7sGlEcJk EUdSvVhZDWMLU9EgDKEirZaGMm5qewG0Z3TMR6rmOtZslOdy6daSeAi5aQNMwEZilxWHR zJ23oGzbCmfVTvw2angaCmbg/8aNKbrVDLrELH9zpXmxcqRrUviYTMGvUINbzGc+AMrt2 v2O3KRrlKQq1y7/SBCIZuuRdSzTKBuoy6Iv8gf07+tOz49viGNVAm4it7jpK78eW9+hgv GAJFJLPCgQ+YmgsaqqoMy5AXqnbL1KwMxcQtyx0Q0zhP+or54elWz10PV06pWiU2e5A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793878980; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Type:X-Mailer: Content-Transfer-Encoding; bh=wh2ChqYF9XmNrt6b8ATpGBOGwb3/qYFuxeZ+hTus5/8=; b=IODUXf09rZU4m1IVrAa/B1AAOrTQ4VXlt+Fdj04brOQZUo2mjNr7wm+EyVUcHuqsbF+W nqF9C06rUzVs6Y45gyouSq3T/1du0YddjMN4bUzgdVxx7n2UyG59QRhkYA3OuPm5TIIKR P335YGmsdumVbzNbMxUxMBbY2wE5qfhdTcYxCyDNZrboBBwDZ87f9eu5yQYq3tzpWlSho geiV3f/LfOKwnCUaMOow+4z1s+53xkGBbUdH9eyi8GjLC1Rp+4VqRdmVxI1ZtQxBM4uH6 me9Gi5xRfRvrkUzJWbrk7EFVONggoiHtBT8k6IuQJKjJy/TuvtchEttGY59Di+FJq2g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Hz+Q7l13; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 218496082BC1; Thu, 5 Nov 2026 11:43:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Hz+Q7l13 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29C471F00A15; Thu, 5 Nov 2026 11:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793878980; bh=wh2ChqYF9XmNrt6b8ATpGBOGwb3/qYFuxeZ+hTus5/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Hz+Q7l13ehrAH4JfC/EmnFHGXEzuVKlpCJ2hy0jgirPvlXDfbh9TzTMxvSEM6ftXL V4gRcdHtqAxgaJGYxhvb9wFCVxSfrsAAeFspTWF18H2yAevJRWmbTRoiB1VxTBL26V drIvK0pp+5Vy5BVtDKiwEoAjO2KuKEYGtBLshn+pSKmASjMVYF2/2OfECXUV/zq7Vf DwdlYasjopA6fDNUUo1tirp/B5e/etym3wKTgkWVqF782WshoLHDVjRmtlDChPvjZY oRH4EFh4/hTEI4ToBhirlTH+z+6szkJ4Rr4SuE9x29hl4l1rkbr6TNhUpciGDZtZox s4g7D59du+NYA== From: Leon Romanovsky To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Dmitry Torokhov , Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Johannes Berg , Jonathan Corbet , Shuah Khan , Randy Dunlap , Bjorn Helgaas , "Joerg Roedel (AMD)" , Suravee Suthikulpanit , Vasant Hegde , Will Deacon , Robin Murphy , David Woodhouse , Lu Baolu , Johan Hovold , Eric Dumazet , Marcel Holtmann , Luiz Augusto von Dentz , Nipun Gupta , Nikhil Agarwal , Pieter Jansen van Vuuren Cc: linux-kernel@vger.kernel.org, driver-core@lists.linux.dev, linux-input@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, iommu@lists.linux.dev, Jason Gunthorpe Subject: [PATCH 07/17] cdx: Propagate DMA configuration errors Date: Thu, 5 Nov 2026 13:42:20 +0200 Message-ID: <20261105-device-trust-core-v1-7-1e536825b4eb@nvidia.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261105-device-trust-core-v1-0-1e536825b4eb@nvidia.com> References: <20261105-device-trust-core-v1-0-1e536825b4eb@nvidia.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.15-dev-18f8f Content-Transfer-Encoding: 8bit From: Leon Romanovsky CDX reports successful DMA configuration when firmware setup defers or default-domain acquisition fails. Driver probing can then proceed without the required DMA setup or IOMMU ownership. Return the configuration result so driver core stops or defers probing instead of allowing a driver to use a rejected domain. Fixes: 2959ab247061 ("cdx: add the cdx bus driver") Signed-off-by: Leon Romanovsky --- drivers/cdx/cdx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c index a118a89a7779d..0a030bf522690 100644 --- a/drivers/cdx/cdx.c +++ b/drivers/cdx/cdx.c @@ -367,7 +367,7 @@ static int cdx_dma_configure(struct device *dev) arch_teardown_dma_ops(dev); } - return 0; + return ret; } static void cdx_dma_cleanup(struct device *dev) -- 2.56.0