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=1794209660; b=aGm8pt+VRWk1naiatDjpP+2gCjIy0ST/4xYClsJN4uFAz5PhEliNEXVmZW7IzVl7lHWm T7uJS579oj3o9aIii2Qu/D1kMHcZFcfrQwCb0RP6S9rw7LgsSRR+EUT6ZyRDaOAXa6sKK 7ogJ/tNaxAlD/lqFJ0/Z+GUX5quFl/8N9gWCb1U4XayC/Q8p4VFdrGovkZP4STNaMQ/nh +MAguPJ6ehsRGvPwtzy12BJDfbWwyfg5jV7ZjAU5Xl3rx2+4sJvpNd3pbv+aOxryLXGTP epNcinPCPBM015KYyoftzO+RAXl26jg3ORYeqCVp3GIqVjWFneQCUtug4YHLXJEOq3A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794209660; 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=jmGFALX9uzjFWdVunLJ+mqgnHA+1OFJ/ESN02ouCwRM5+gnRNVs63Cd0Bw0YeHdVzqZL sJO7i7TVBOwfyBNq5fa/N75naqGD4PBgHmX7GBYNiiPQ1y5Ut+3SXAc0OfHHYDKNgNYSc J4/9XCGmHsS6Ia6nUbBs7ZusSpVBHUZyCipWiFODm65EOwrCTUIA2UawO8HOT3oGcWTV4 yO4/0jZu4fN4o+PZgkcSBKIRNQ3zdHQtNFdLADEUWBXORaR8BizteXK01nf/lnumNSfhu A2ioqnSNra5EvM5GUHOgFeFYc9TUDCsDB7fK+cCCZQIk1FhW9GeTzhvYTLqZ1mH3bKQ== 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=laYxnljf; 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 CFE236082BD7; Mon, 9 Nov 2026 07:34:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=laYxnljf Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CB551F008A1; Mon, 9 Nov 2026 07:34:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794209659; bh=wh2ChqYF9XmNrt6b8ATpGBOGwb3/qYFuxeZ+hTus5/8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=laYxnljfw/dZnl22s4rzHk5vSm7ZDFxtqehSxMhT3r/VinDboZwVpJfyJNhGqjE/h WCze+Mn1WHl2/tNoC9vojzEpPivRs+6SRkVyF9nygJo3xSduXtKOCloTwRoaB6gbBh yXAgTbI2MamI/qPYq7pd4M0R/b6UQ39nDW3jvi3Erqp5sU8AeOL2xWsr5HX57guu8k TFtnF74FBLBk/vmEzDCrXOz+hr4i2BmbSWfck9TU6NWMqQRbnvPbwsP44NFHEHEl1P aD1hvNkvAXaJoZp1iJYhlSiGiKNI71pRNQdHRiPaSDCvDKCRFsgd6ntWXGf59d1iGm JCQ+qySHzerAA== 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 v2 06/19] cdx: Propagate DMA configuration errors Date: Mon, 9 Nov 2026 09:33:36 +0200 Message-ID: <20261109-device-trust-core-v2-6-3b12d9a9f861@nvidia.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261109-device-trust-core-v2-0-3b12d9a9f861@nvidia.com> References: <20261109-device-trust-core-v2-0-3b12d9a9f861@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