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GET /api/patches/2216838/?format=api
{ "id": 2216838, "url": "http://patchwork.ozlabs.org/api/patches/2216838/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260327-gpio-kill-dev-sync-probe-v1-1-efac254f1a1d@oss.qualcomm.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260327-gpio-kill-dev-sync-probe-v1-1-efac254f1a1d@oss.qualcomm.com>", "list_archive_url": null, "date": "2026-03-27T10:31:11", "name": "[1/4] gpio: sim: stop using dev-sync-probe", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "9c6d78a43af467fda106d1ebf56223bf314330f4", "submitter": { "id": 92196, "url": "http://patchwork.ozlabs.org/api/people/92196/?format=api", "name": "Bartosz Golaszewski", "email": "bartosz.golaszewski@oss.qualcomm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260327-gpio-kill-dev-sync-probe-v1-1-efac254f1a1d@oss.qualcomm.com/mbox/", "series": [ { "id": 497743, "url": "http://patchwork.ozlabs.org/api/series/497743/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=497743", "date": "2026-03-27T10:31:11", "name": "gpio: kill dev-sync-probe", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497743/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216838/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216838/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-34244-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-gpio@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=mJANN/J/;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=ZERQpbSe;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "\n <20260327-gpio-kill-dev-sync-probe-v1-1-efac254f1a1d@oss.qualcomm.com>", "References": "\n <20260327-gpio-kill-dev-sync-probe-v1-0-efac254f1a1d@oss.qualcomm.com>", "In-Reply-To": "\n <20260327-gpio-kill-dev-sync-probe-v1-0-efac254f1a1d@oss.qualcomm.com>", "To": "Linus Walleij <linusw@kernel.org>, Bartosz Golaszewski <brgl@kernel.org>,\n Geert Uytterhoeven <geert+renesas@glider.be>,\n Koichiro Den <koichiro.den@canonical.com>", "Cc": "linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,\n Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=4666;\n i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id;\n bh=KrXRFKkz+jF/UwU2ye387/82NSUQuTQydckj94JpMVo=;\n b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBpxlx6fbHoe0JGXF87CeGIM7R+wqh0Q5qewdDCi\n 6S8H6vIPDiJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCacZcegAKCRAFnS7L/zaE\n w0PJEACMaD6HcUHNPOrWJPsFePi5AGVodPeSUP8S0N3+oKBH/EuE72gUMAN47OSpNbQfmc33Rhl\n +6MV3HB/qmOOlScAzwynXtONfD+s1YnlDwrD6IDHhDjJ6br50UsqrwqO7xes1fgcrngLWYyIwqq\n 5VmOpavG2qOtvanq/GtkM2PFup/Aw2791gMHcgvo569US7PEVXDt1og76HhB6BYEdrrt9woblz6\n ZdD9bX7TXXiJmvCR759t+7yuSESbwBjcURspjrqRIcjwGJAlAe7b0lsOZZrx2OtwHMQXBOu7tw9\n V9myeaQ3QeAmM9Dx+ZWVks7+rS1WGWI9rei06qF5a5yjrn1H0oubEvOIQ5ZuncYhlvkibm1lzPh\n REObms3uoRqRVtON9XtiIcWVGzEvNeaK2HGkn0sVpnht4GioZbB8g57cc9cjai12HbVXqCIV6Su\n hoMPXQhL3wpFDrEhqt29waClwr99Ue5WAzcWhIlPezjtKxha/2dnxtpyI8HbtNJ+rFuf1vvAC/5\n ZwwlJy4bbB5aKs1KxA4vfSgBpesB/i+OZ6qvaXPi1hLMbcGgM+vCpIXj8B9SEelzGt0S3ognJUm\n 4joDwsNGW+1rg4C1N0iv7QmQNmNwAfOzaFz4HmQWJ98Ji6w66TGf7BP+Tmk2aXLFFEudtY1g0lx\n NjN73/iRj22Q2AQ==", "X-Developer-Key": "i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp;\n fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772", "X-Authority-Analysis": "v=2.4 cv=NenrFmD4 c=1 sm=1 tr=0 ts=69c65c83 cx=c_pps\n a=DUEm7b3gzWu7BqY5nP7+9g==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10\n a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8\n a=PNVl03acetVcUdc3VX8A:9 a=QEXdDO2ut3YA:10 a=-aSRE8QhW-JAV6biHavz:22", "X-Proofpoint-GUID": "24dNacvRqwbC_N9YoE071TpmMv4mV8ez", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMzI3MDA3NiBTYWx0ZWRfX2zwQBGxmwHN+\n LK+vAZLNuVzZuarY0PMok2Uno9qtTtEF9qeH+dGLIWLL6sn7vdMKQJtXaqtrolLFzJnEyuKv4Yc\n miqhYFag+30qwtyBtUmDO++Jr+S/7mJCvADKwB9rms2JlpEw0b3r8fjFNUD3yvvh5KyiqPeU7CR\n INK+qtT7ID0DZcMS4BKMmIdpcfp/2lXpokn/5SRJP8V5t9F/xTGPQgnOdwGZxBZe2Vv/kYhQNOt\n LjNJkEgi6HMQZlvHdKt5yQ8nd9uc7Jglivcv59OedaLy04O6B5ns6SCgXFa42c4ANkFn+7f9Pbp\n JH54z/6E6uaEYYm3IvhHNKCqnwYsp165Fzi0LA4PmPBethSvvsWs3eopV+1jm1EHltQdh+sreI5\n +FAlYOpueOOZelhQXIruOnOf9qaSlGAzUqvjKO8k0IwH2C790cwiL3CWPTaC7kHRfkdUE8MYv8e\n vzqvK/K0KenX9uDJONg==", "X-Proofpoint-ORIG-GUID": "24dNacvRqwbC_N9YoE071TpmMv4mV8ez", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-03-26_04,2026-03-26_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n bulkscore=0 spamscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0\n clxscore=1015 suspectscore=0 adultscore=0 impostorscore=0 malwarescore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603270076" }, "content": "dev-err-probe is an overengineered solution to a simple problem. Use a\ncombination of wait_for_probe() and device_is_bound() to synchronously\nwait for the platform device to probe.\n\nSigned-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>\n---\n drivers/gpio/Kconfig | 1 -\n drivers/gpio/gpio-sim.c | 49 +++++++++++++++++++++++++++++--------------------\n 2 files changed, 29 insertions(+), 21 deletions(-)", "diff": "diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig\nindex 4c3f6ec336c16129301613aadc8b22587b217005..a603406cb2e53a89e1da6214a3c1c256d5246be7 100644\n--- a/drivers/gpio/Kconfig\n+++ b/drivers/gpio/Kconfig\n@@ -2036,7 +2036,6 @@ config GPIO_SIM\n \ttristate \"GPIO Simulator Module\"\n \tselect IRQ_SIM\n \tselect CONFIGFS_FS\n-\tselect DEV_SYNC_PROBE\n \thelp\n \t This enables the GPIO simulator - a configfs-based GPIO testing\n \t driver.\ndiff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c\nindex f32674230237eb08bbf8dd1337a79b5d0aa13259..e19701c2ed673f8ec5a2475e632388197a78339c 100644\n--- a/drivers/gpio/gpio-sim.c\n+++ b/drivers/gpio/gpio-sim.c\n@@ -36,8 +36,6 @@\n #include <linux/sysfs.h>\n #include <linux/types.h>\n \n-#include \"dev-sync-probe.h\"\n-\n #define GPIO_SIM_NGPIO_MAX\t1024\n #define GPIO_SIM_PROP_MAX\t5 /* Max 4 properties + sentinel. */\n #define GPIO_SIM_HOG_PROP_MAX\t5\n@@ -546,7 +544,7 @@ static struct platform_driver gpio_sim_driver = {\n };\n \n struct gpio_sim_device {\n-\tstruct dev_sync_probe_data probe_data;\n+\tstruct platform_device *pdev;\n \tstruct config_group group;\n \n \tint id;\n@@ -673,7 +671,7 @@ static bool gpio_sim_device_is_live(struct gpio_sim_device *dev)\n {\n \tlockdep_assert_held(&dev->lock);\n \n-\treturn !!dev->probe_data.pdev;\n+\treturn !!dev->pdev;\n }\n \n static char *gpio_sim_strdup_trimmed(const char *str, size_t count)\n@@ -695,7 +693,7 @@ static ssize_t gpio_sim_device_config_dev_name_show(struct config_item *item,\n \n \tguard(mutex)(&dev->lock);\n \n-\tpdev = dev->probe_data.pdev;\n+\tpdev = dev->pdev;\n \tif (pdev)\n \t\treturn sprintf(page, \"%s\\n\", dev_name(&pdev->dev));\n \n@@ -900,6 +898,7 @@ static bool gpio_sim_bank_labels_non_unique(struct gpio_sim_device *dev)\n static int gpio_sim_device_activate(struct gpio_sim_device *dev)\n {\n \tstruct platform_device_info pdevinfo;\n+\tstruct platform_device *pdev;\n \tstruct fwnode_handle *swnode;\n \tstruct gpio_sim_bank *bank;\n \tint ret;\n@@ -927,28 +926,39 @@ static int gpio_sim_device_activate(struct gpio_sim_device *dev)\n \t\tbank->swnode = gpio_sim_make_bank_swnode(bank, swnode);\n \t\tif (IS_ERR(bank->swnode)) {\n \t\t\tret = PTR_ERR(bank->swnode);\n-\t\t\tgpio_sim_remove_swnode_recursive(swnode);\n-\t\t\treturn ret;\n+\t\t\tgoto err_remove_swnode;\n \t\t}\n \n \t\tret = gpio_sim_bank_add_hogs(bank);\n-\t\tif (ret) {\n-\t\t\tgpio_sim_remove_swnode_recursive(swnode);\n-\t\t\treturn ret;\n-\t\t}\n+\t\tif (ret)\n+\t\t\tgoto err_remove_swnode;\n \t}\n \n \tpdevinfo.name = \"gpio-sim\";\n \tpdevinfo.fwnode = swnode;\n \tpdevinfo.id = dev->id;\n \n-\tret = dev_sync_probe_register(&dev->probe_data, &pdevinfo);\n-\tif (ret) {\n-\t\tgpio_sim_remove_swnode_recursive(swnode);\n-\t\treturn ret;\n+\tpdev = platform_device_register_full(&pdevinfo);\n+\tif (IS_ERR(pdev)) {\n+\t\tret = PTR_ERR(pdev);\n+\t\tgoto err_remove_swnode;\n+\t}\n+\n+\twait_for_device_probe();\n+\tif (!device_is_bound(&pdev->dev)) {\n+\t\tret = -ENXIO;\n+\t\tgoto err_unregister_pdev;\n \t}\n \n+\tdev->pdev = pdev;\n \treturn 0;\n+\n+err_unregister_pdev:\n+\tplatform_device_unregister(pdev);\n+err_remove_swnode:\n+\tgpio_sim_remove_swnode_recursive(swnode);\n+\n+\treturn ret;\n }\n \n static void gpio_sim_device_deactivate(struct gpio_sim_device *dev)\n@@ -957,8 +967,9 @@ static void gpio_sim_device_deactivate(struct gpio_sim_device *dev)\n \n \tlockdep_assert_held(&dev->lock);\n \n-\tswnode = dev_fwnode(&dev->probe_data.pdev->dev);\n-\tdev_sync_probe_unregister(&dev->probe_data);\n+\tswnode = dev_fwnode(&dev->pdev->dev);\n+\tplatform_device_unregister(dev->pdev);\n+\tdev->pdev = NULL;\n \tgpio_sim_remove_swnode_recursive(swnode);\n }\n \n@@ -1060,7 +1071,7 @@ static ssize_t gpio_sim_bank_config_chip_name_show(struct config_item *item,\n \tguard(mutex)(&dev->lock);\n \n \tif (gpio_sim_device_is_live(dev))\n-\t\treturn device_for_each_child(&dev->probe_data.pdev->dev, &ctx,\n+\t\treturn device_for_each_child(&dev->pdev->dev, &ctx,\n \t\t\t\t\t gpio_sim_emit_chip_name);\n \n \treturn sprintf(page, \"none\\n\");\n@@ -1571,8 +1582,6 @@ gpio_sim_config_make_device_group(struct config_group *group, const char *name)\n \tmutex_init(&dev->lock);\n \tINIT_LIST_HEAD(&dev->bank_list);\n \n-\tdev_sync_probe_init(&dev->probe_data);\n-\n \treturn &no_free_ptr(dev)->group;\n }\n \n", "prefixes": [ "1/4" ] }