From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- drivers/input/touchscreen/ad7879-i2c.c | 74 ++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 drivers/input/touchscreen/ad7879-i2c.c (limited to 'drivers/input/touchscreen/ad7879-i2c.c') diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c new file mode 100644 index 000000000..e5b99312c --- /dev/null +++ b/drivers/input/touchscreen/ad7879-i2c.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * AD7879-1/AD7889-1 touchscreen (I2C bus) + * + * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. + */ + +#include /* BUS_I2C */ +#include +#include +#include +#include +#include +#include + +#include "ad7879.h" + +#define AD7879_DEVID 0x79 /* AD7879-1/AD7889-1 */ + +static const struct regmap_config ad7879_i2c_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .max_register = 15, +}; + +static int ad7879_i2c_probe(struct i2c_client *client) +{ + struct regmap *regmap; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WORD_DATA)) { + dev_err(&client->dev, "SMBUS Word Data not Supported\n"); + return -EIO; + } + + regmap = devm_regmap_init_i2c(client, &ad7879_i2c_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return ad7879_probe(&client->dev, regmap, client->irq, + BUS_I2C, AD7879_DEVID); +} + +static const struct i2c_device_id ad7879_id[] = { + { "ad7879" }, + { "ad7889" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ad7879_id); + +#ifdef CONFIG_OF +static const struct of_device_id ad7879_i2c_dt_ids[] = { + { .compatible = "adi,ad7879-1", }, + { } +}; +MODULE_DEVICE_TABLE(of, ad7879_i2c_dt_ids); +#endif + +static struct i2c_driver ad7879_i2c_driver = { + .driver = { + .name = "ad7879", + .dev_groups = ad7879_groups, + .pm = &ad7879_pm_ops, + .of_match_table = of_match_ptr(ad7879_i2c_dt_ids), + }, + .probe = ad7879_i2c_probe, + .id_table = ad7879_id, +}; + +module_i2c_driver(ad7879_i2c_driver); + +MODULE_AUTHOR("Michael Hennerich "); +MODULE_DESCRIPTION("AD7879(-1) touchscreen I2C bus driver"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1