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Wed, 30 Apr 2025 11:41:45 -0700 (PDT) Received: from [192.168.1.28] ([178.197.207.88]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a073e46257sm17728991f8f.77.2025.04.30.11.41.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Apr 2025 11:41:45 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 30 Apr 2025 20:41:29 +0200 Subject: [PATCH v2 1/6] cdx: Enable compile testing 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250430-cdx-clean-v2-1-7dbfda9364a9@linaro.org> References: <20250430-cdx-clean-v2-0-7dbfda9364a9@linaro.org> In-Reply-To: <20250430-cdx-clean-v2-0-7dbfda9364a9@linaro.org> To: Nipun Gupta , Nikhil Agarwal , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1370; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=VdScxxYwI0VoeKxBPwPGQrsVDAAxzP9pATm4OBb3UnM=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBoEm7gl6xZOTMTHozha9YoWVRCc1LKIhfYN9Etx Y5oi3iHsl+JAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCaBJu4AAKCRDBN2bmhouD 12XMD/95JkTwMcRRfR9KmUgdYnERT9ngt8Hn65qbYGRiOGR/Ewhj8Sk6oRJ6JjyroYNWGGKkCxC zARjCi0g5UcP4k47NSfk6633Ou7mMaaqYGSS4M+zCWTVcrlAbaLsOkIPrmlTxSk5aRxCWjqkz8Y bw6fQ9xX/ZQIm1bjNL3GHcc+0UcstRAd9y4L1KUz8KrGCoX/CBFQH/qHF/jiTrpPeVZTPD/QH8B oFPRdgA2iN5+yLxzBfEjLpOvZhc+yElCaH/2A+qO5i4OTkmgOdT8dlrgyrNErN0N7iaD0wrt5sA +W2BS5K8S4EEDpLOXPbS10eN2um0RiLmAwSChuxi8LPahyUx81zbf5uXHxBHcOYiuk9YjCCr15d Ju3BN15cbwnQmQDxj5mpsNjNib6B6oazcjKUDmTmgJxTaS0DMxo0jzqw06036ti4zyWp4xPbjza 0t/tP/u6Jkz1W0VDtArPFtwXeehu5Opfj7M5xz2Y8fPPJdlbx/trm0OcrkcE7/BRMjGCFzdD9kx me+oaCRUCfvVqitfIQggl0RnWo7RTcH2NEeaEqTtrT27qATY5xK3ARtom0dNusH/hxkWwPyFjTw wCj5jRN+oIj969T7QXYfbFKV5JFz9aXwEo8ggd8ckG8ZpYkNKrqcXr6k0dEaHyJbTgF7eOHGQeX bpLHGg6vSQgCtxw== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B There is no code limited to ARM64 or OF/Devicetree in the CDX bus driver, so CDX_BUS can be compile tested on all platforms. CDX_CONTROLLER on the other hand selects REMOTEPROC which depends on HAS_DMA, so add that dependency for compile testing. Signed-off-by: Krzysztof Kozlowski --- drivers/cdx/Kconfig | 2 +- drivers/cdx/controller/Kconfig | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/cdx/Kconfig b/drivers/cdx/Kconfig index a08958485e316a1a3e00390d90c7a9eaa518d0e8..1f1e360507d7d5c33671c601534= e82f2d4de0424 100644 --- a/drivers/cdx/Kconfig +++ b/drivers/cdx/Kconfig @@ -7,7 +7,7 @@ =20 config CDX_BUS bool "CDX Bus driver" - depends on OF && ARM64 + depends on OF && ARM64 || COMPILE_TEST help Driver to enable Composable DMA Transfer(CDX) Bus. 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Wed, 30 Apr 2025 11:41:47 -0700 (PDT) Received: from [192.168.1.28] ([178.197.207.88]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a073e46257sm17728991f8f.77.2025.04.30.11.41.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Apr 2025 11:41:46 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 30 Apr 2025 20:41:30 +0200 Subject: [PATCH v2 2/6] cdx: controller: Simplify with dev_err_probe() 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250430-cdx-clean-v2-2-7dbfda9364a9@linaro.org> References: <20250430-cdx-clean-v2-0-7dbfda9364a9@linaro.org> In-Reply-To: <20250430-cdx-clean-v2-0-7dbfda9364a9@linaro.org> To: Nipun Gupta , Nikhil Agarwal , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1199; i=krzysztof.kozlowski@linaro.org; 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Signed-off-by: Krzysztof Kozlowski --- drivers/cdx/controller/cdx_controller.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controll= er/cdx_controller.c index d623f9c7517a86c06082c0db348688e7f33b7be6..3df35833f0e0a994af0606eee0d= c1dfc9c7c22f9 100644 --- a/drivers/cdx/controller/cdx_controller.c +++ b/drivers/cdx/controller/cdx_controller.c @@ -195,15 +195,13 @@ static int xlnx_cdx_probe(struct platform_device *pde= v) /* Create MSI domain */ cdx->msi_domain =3D cdx_msi_domain_init(&pdev->dev); if (!cdx->msi_domain) { - dev_err(&pdev->dev, "cdx_msi_domain_init() failed"); - ret =3D -ENODEV; + ret =3D dev_err_probe(&pdev->dev, -ENODEV, "cdx_msi_domain_init() failed= "); goto cdx_msi_fail; } =20 ret =3D cdx_setup_rpmsg(pdev); if (ret) { - if (ret !=3D -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to register CDX RPMsg transport\n"); + dev_err_probe(&pdev->dev, ret, "Failed to register CDX RPMsg transport\n= "); 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Printing "hey I probed" is not useful and kernel already gives mechanism to investigate that (e.g. sysfs, tracing, initcall debug). Signed-off-by: Krzysztof Kozlowski --- drivers/cdx/controller/cdx_controller.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controll= er/cdx_controller.c index 3df35833f0e0a994af0606eee0dc1dfc9c7c22f9..fce90926d3378ae60166426cbf8= e4a4fe014af86 100644 --- a/drivers/cdx/controller/cdx_controller.c +++ b/drivers/cdx/controller/cdx_controller.c @@ -205,7 +205,6 @@ static int xlnx_cdx_probe(struct platform_device *pdev) goto cdx_rpmsg_fail; } =20 - dev_info(&pdev->dev, "Successfully registered CDX controller with RPMsg a= s transport\n"); return 0; =20 cdx_rpmsg_fail: --=20 2.45.2 From nobody Sun Feb 8 13:38:50 2026 Received: from mail-wr1-f41.google.com (mail-wr1-f41.google.com [209.85.221.41]) (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 2E4BB270556 for ; Wed, 30 Apr 2025 18:41:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Replace standard platform_driver_register() boilerplate with module_platform_driver() to make code smaller. Signed-off-by: Krzysztof Kozlowski --- drivers/cdx/controller/cdx_controller.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controll= er/cdx_controller.c index fce90926d3378ae60166426cbf8e4a4fe014af86..bfb5ac2d861f2708214ae28922a= 7c0cfdcdf5cc6 100644 --- a/drivers/cdx/controller/cdx_controller.c +++ b/drivers/cdx/controller/cdx_controller.c @@ -250,24 +250,7 @@ static struct platform_driver cdx_pdriver =3D { .remove =3D xlnx_cdx_remove, }; =20 -static int __init cdx_controller_init(void) -{ - int ret; - - ret =3D platform_driver_register(&cdx_pdriver); - if (ret) - pr_err("platform_driver_register() failed: %d\n", ret); - - return ret; -} - -static void __exit cdx_controller_exit(void) -{ - platform_driver_unregister(&cdx_pdriver); -} - -module_init(cdx_controller_init); -module_exit(cdx_controller_exit); +module_platform_driver(cdx_pdriver); =20 MODULE_AUTHOR("AMD Inc."); MODULE_DESCRIPTION("CDX controller for AMD devices"); 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Struct driver in platform_driver is zero-ed so there is no need to assign its 'pm' member to NULL. Signed-off-by: Krzysztof Kozlowski --- drivers/cdx/controller/cdx_controller.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/cdx/controller/cdx_controller.c b/drivers/cdx/controll= er/cdx_controller.c index bfb5ac2d861f2708214ae28922a7c0cfdcdf5cc6..fca83141e3e66e68e6916077833= db2b7d816395f 100644 --- a/drivers/cdx/controller/cdx_controller.c +++ b/drivers/cdx/controller/cdx_controller.c @@ -243,7 +243,6 @@ MODULE_DEVICE_TABLE(of, cdx_match_table); static struct platform_driver cdx_pdriver =3D { .driver =3D { .name =3D "cdx-controller", - .pm =3D NULL, .of_match_table =3D cdx_match_table, }, .probe =3D xlnx_cdx_probe, --=20 2.45.2 From nobody Sun Feb 8 13:38:50 2026 Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) (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 AA7EA276049 for ; Wed, 30 Apr 2025 18:41:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Patches for CDX bus drivers are applied by Greg Kroah-Hartman, so list him in the maintainers entry because otherwise contributors would be surprised their patches got lost. Signed-off-by: Krzysztof Kozlowski --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index b2c3be5f6131432647dd01f22bbf4bf1c8bde9e6..505d7d45ad7d1c007e89a555264= ff8cbeaf6e1f4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1008,6 +1008,7 @@ F: Documentation/devicetree/bindings/w1/amd,axi-1wire= -host.yaml F: drivers/w1/masters/amd_axi_w1.c =20 AMD CDX BUS DRIVER +M: Greg Kroah-Hartman M: Nipun Gupta M: Nikhil Agarwal S: Maintained --=20 2.45.2