gpio: remove dev-sync-probe

There are no more users. Remove the dev-sync-probe module.

Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-4-efac254f1a1d@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 6dd2e08b9be6ca7bec7e30525418666bbc5ceabf..536af328b56e73a1021b7ec8459a804160d3c81e 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2108,6 +2108,3 @@ config GPIO_VIRTUSER
 endmenu
 
 endif
-
-config DEV_SYNC_PROBE
-       tristate

diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 13ff2a129354889414ff0b2323644ba0ec9f1220..b267598b517de089cf6339d837264f1d09e275c0 100644 (file)
--- 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 (file)
index 9ea733b..0000000
--- 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 (file)
index 4b3d52b..0000000
--- 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 */