From: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
To: Linus Walleij <linusw@kernel.org>,
Bartosz Golaszewski <brgl@kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Koichiro Den <koichiro.den@canonical.com>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Subject: [PATCH 4/4] gpio: remove dev-sync-probe
Date: Fri, 27 Mar 2026 11:31:14 +0100 [thread overview]
Message-ID: <20260327-gpio-kill-dev-sync-probe-v1-4-efac254f1a1d@oss.qualcomm.com> (raw)
In-Reply-To: <20260327-gpio-kill-dev-sync-probe-v1-0-efac254f1a1d@oss.qualcomm.com>
There are no more users. Remove the dev-sync-probe module.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
---
drivers/gpio/Kconfig | 3 --
drivers/gpio/Makefile | 3 --
drivers/gpio/dev-sync-probe.c | 97 -------------------------------------------
drivers/gpio/dev-sync-probe.h | 25 -----------
4 files changed, 128 deletions(-)
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 56a7ddaa95eac07ee4f7b755335595805a316319..257123b3568688ad86a742043af2c6e098a56c3c 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2082,6 +2082,3 @@ config GPIO_VIRTUSER
endmenu
endif
-
-config DEV_SYNC_PROBE
- tristate
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 20d4a57afdaa6db0d01cd7e107a2e22004641ecb..199b9559a1892c4fce058cb95907de0be5d85780 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -21,9 +21,6 @@ obj-$(CONFIG_GPIO_GENERIC) += gpio-generic.o
# directly supported by gpio-generic
gpio-generic-$(CONFIG_GPIO_GENERIC) += gpio-mmio.o
-# Utilities for drivers that need synchronous fake device creation
-obj-$(CONFIG_DEV_SYNC_PROBE) += dev-sync-probe.o
-
obj-$(CONFIG_GPIO_104_DIO_48E) += gpio-104-dio-48e.o
obj-$(CONFIG_GPIO_104_IDI_48) += gpio-104-idi-48.o
obj-$(CONFIG_GPIO_104_IDIO_16) += gpio-104-idio-16.o
diff --git a/drivers/gpio/dev-sync-probe.c b/drivers/gpio/dev-sync-probe.c
deleted file mode 100644
index 9ea733b863b2232a16ef9ccc411f180b43bad26e..0000000000000000000000000000000000000000
--- a/drivers/gpio/dev-sync-probe.c
+++ /dev/null
@@ -1,97 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Common code for drivers creating fake platform devices.
- *
- * Provides synchronous device creation: waits for probe completion and
- * returns the probe success or error status to the device creator.
- *
- * Copyright (C) 2021 Bartosz Golaszewski <brgl@bgdev.pl>
- * Copyright (C) 2025 Koichiro Den <koichiro.den@canonical.com>
- */
-
-#include <linux/device.h>
-#include <linux/slab.h>
-
-#include "dev-sync-probe.h"
-
-static int dev_sync_probe_notifier_call(struct notifier_block *nb,
- unsigned long action, void *data)
-{
- struct dev_sync_probe_data *pdata;
- struct device *dev = data;
-
- pdata = container_of(nb, struct dev_sync_probe_data, bus_notifier);
- if (!device_match_name(dev, pdata->name))
- return NOTIFY_DONE;
-
- switch (action) {
- case BUS_NOTIFY_BOUND_DRIVER:
- pdata->driver_bound = true;
- break;
- case BUS_NOTIFY_DRIVER_NOT_BOUND:
- pdata->driver_bound = false;
- break;
- default:
- return NOTIFY_DONE;
- }
-
- complete(&pdata->probe_completion);
- return NOTIFY_OK;
-}
-
-void dev_sync_probe_init(struct dev_sync_probe_data *data)
-{
- memset(data, 0, sizeof(*data));
- init_completion(&data->probe_completion);
- data->bus_notifier.notifier_call = dev_sync_probe_notifier_call;
-}
-EXPORT_SYMBOL_GPL(dev_sync_probe_init);
-
-int dev_sync_probe_register(struct dev_sync_probe_data *data,
- struct platform_device_info *pdevinfo)
-{
- struct platform_device *pdev;
- char *name;
-
- name = kasprintf(GFP_KERNEL, "%s.%d", pdevinfo->name, pdevinfo->id);
- if (!name)
- return -ENOMEM;
-
- data->driver_bound = false;
- data->name = name;
- reinit_completion(&data->probe_completion);
- bus_register_notifier(&platform_bus_type, &data->bus_notifier);
-
- pdev = platform_device_register_full(pdevinfo);
- if (IS_ERR(pdev)) {
- bus_unregister_notifier(&platform_bus_type, &data->bus_notifier);
- kfree(data->name);
- return PTR_ERR(pdev);
- }
-
- wait_for_completion(&data->probe_completion);
- bus_unregister_notifier(&platform_bus_type, &data->bus_notifier);
-
- if (!data->driver_bound) {
- platform_device_unregister(pdev);
- kfree(data->name);
- return -ENXIO;
- }
-
- data->pdev = pdev;
- return 0;
-}
-EXPORT_SYMBOL_GPL(dev_sync_probe_register);
-
-void dev_sync_probe_unregister(struct dev_sync_probe_data *data)
-{
- platform_device_unregister(data->pdev);
- kfree(data->name);
- data->pdev = NULL;
-}
-EXPORT_SYMBOL_GPL(dev_sync_probe_unregister);
-
-MODULE_AUTHOR("Bartosz Golaszewski <brgl@bgdev.pl>");
-MODULE_AUTHOR("Koichiro Den <koichiro.den@canonical.com>");
-MODULE_DESCRIPTION("Utilities for synchronous fake device creation");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/dev-sync-probe.h b/drivers/gpio/dev-sync-probe.h
deleted file mode 100644
index 4b3d52b705198dd153618b087ba9d813736a6f29..0000000000000000000000000000000000000000
--- a/drivers/gpio/dev-sync-probe.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef DEV_SYNC_PROBE_H
-#define DEV_SYNC_PROBE_H
-
-#include <linux/completion.h>
-#include <linux/notifier.h>
-#include <linux/platform_device.h>
-
-struct dev_sync_probe_data {
- struct platform_device *pdev;
- const char *name;
-
- /* Synchronize with probe */
- struct notifier_block bus_notifier;
- struct completion probe_completion;
- bool driver_bound;
-};
-
-void dev_sync_probe_init(struct dev_sync_probe_data *data);
-int dev_sync_probe_register(struct dev_sync_probe_data *data,
- struct platform_device_info *pdevinfo);
-void dev_sync_probe_unregister(struct dev_sync_probe_data *data);
-
-#endif /* DEV_SYNC_PROBE_H */
--
2.47.3
next prev parent reply other threads:[~2026-03-27 10:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-27 10:31 [PATCH 0/4] gpio: kill dev-sync-probe Bartosz Golaszewski
2026-03-27 10:31 ` [PATCH 1/4] gpio: sim: stop using dev-sync-probe Bartosz Golaszewski
2026-03-27 10:31 ` [PATCH 2/4] gpio: aggregator: " Bartosz Golaszewski
2026-04-02 12:45 ` Bartosz Golaszewski
2026-03-27 10:31 ` [PATCH 3/4] gpio: virtuser: " Bartosz Golaszewski
2026-03-27 10:31 ` Bartosz Golaszewski [this message]
2026-03-27 13:03 ` [PATCH 0/4] gpio: kill dev-sync-probe Linus Walleij
2026-04-07 10:44 ` Bartosz Golaszewski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260327-gpio-kill-dev-sync-probe-v1-4-efac254f1a1d@oss.qualcomm.com \
--to=bartosz.golaszewski@oss.qualcomm.com \
--cc=brgl@kernel.org \
--cc=geert+renesas@glider.be \
--cc=koichiro.den@canonical.com \
--cc=linusw@kernel.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).