Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 606 insertions, 0 deletions

diff --git a/drivers/nvmem/m24lr.c b/drivers/nvmem/m24lr.c
new file mode 100644
index 000000000..7a9fd45a8
--- /dev/null
+++ b/drivers/nvmem/m24lr.c
@@ -0,0 +1,606 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * m24lr.c - Sysfs control interface for ST M24LR series RFID/NFC chips
+ *
+ * Copyright (c) 2025 Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+ *
+ * This driver implements both the sysfs-based control interface and EEPROM
+ * access for STMicroelectronics M24LR series chips (e.g., M24LR04E-R).
+ * It provides access to control registers for features such as password
+ * authentication, memory protection, and device configuration. In addition,
+ * it manages read and write operations to the EEPROM region of the chip.
+ */
+
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/nvmem-provider.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+
+#define M24LR_WRITE_TIMEOUT	  25u
+#define M24LR_READ_TIMEOUT	  (M24LR_WRITE_TIMEOUT)
+
+/**
+ * struct m24lr_chip - describes chip-specific sysfs layout
+ * @sss_len:       the length of the sss region
+ * @page_size:	   chip-specific limit on the maximum number of bytes allowed
+ *		   in a single write operation.
+ * @eeprom_size:   size of the EEPROM in byte
+ *
+ * Supports multiple M24LR chip variants (e.g., M24LRxx) by allowing each
+ * to define its own set of sysfs attributes, depending on its available
+ * registers and features.
+ */
+struct m24lr_chip {
+	unsigned int sss_len;
+	unsigned int page_size;
+	unsigned int eeprom_size;
+};
+
+/**
+ * struct m24lr - core driver data for M24LR chip control
+ * @uid:           64 bits unique identifier stored in the device
+ * @sss_len:       the length of the sss region
+ * @page_size:	   chip-specific limit on the maximum number of bytes allowed
+ *		   in a single write operation.
+ * @eeprom_size:   size of the EEPROM in byte
+ * @ctl_regmap:	   regmap interface for accessing the system parameter sector
+ * @eeprom_regmap: regmap interface for accessing the EEPROM
+ * @lock:	   mutex to synchronize operations to the device
+ *
+ * Central data structure holding the state and resources used by the
+ * M24LR device driver.
+ */
+struct m24lr {
+	u64 uid;
+	unsigned int sss_len;
+	unsigned int page_size;
+	unsigned int eeprom_size;
+	struct regmap *ctl_regmap;
+	struct regmap *eeprom_regmap;
+	struct mutex lock;	 /* synchronize operations to the device */
+};
+
+static const struct regmap_range m24lr_ctl_vo_ranges[] = {
+	regmap_reg_range(0, 63),
+};
+
+static const struct regmap_access_table m24lr_ctl_vo_table = {
+	.yes_ranges = m24lr_ctl_vo_ranges,
+	.n_yes_ranges = ARRAY_SIZE(m24lr_ctl_vo_ranges),
+};
+
+static const struct regmap_config m24lr_ctl_regmap_conf = {
+	.name = "m24lr_ctl",
+	.reg_stride = 1,
+	.reg_bits = 16,
+	.val_bits = 8,
+	.disable_locking = false,
+	.cache_type = REGCACHE_RBTREE,/* Flat can't be used, there's huge gap */
+	.volatile_table = &m24lr_ctl_vo_table,
+};
+
+/* Chip descriptor for M24LR04E-R variant */
+static const struct m24lr_chip m24lr04e_r_chip = {
+	.page_size = 4,
+	.eeprom_size = 512,
+	.sss_len = 4,
+};
+
+/* Chip descriptor for M24LR16E-R variant */
+static const struct m24lr_chip m24lr16e_r_chip = {
+	.page_size = 4,
+	.eeprom_size = 2048,
+	.sss_len = 16,
+};
+
+/* Chip descriptor for M24LR64E-R variant */
+static const struct m24lr_chip m24lr64e_r_chip = {
+	.page_size = 4,
+	.eeprom_size = 8192,
+	.sss_len = 64,
+};
+
+static const struct i2c_device_id m24lr_ids[] = {
+	{ "m24lr04e-r", (kernel_ulong_t)&m24lr04e_r_chip},
+	{ "m24lr16e-r", (kernel_ulong_t)&m24lr16e_r_chip},
+	{ "m24lr64e-r", (kernel_ulong_t)&m24lr64e_r_chip},
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, m24lr_ids);
+
+static const struct of_device_id m24lr_of_match[] = {
+	{ .compatible = "st,m24lr04e-r", .data = &m24lr04e_r_chip},
+	{ .compatible = "st,m24lr16e-r", .data = &m24lr16e_r_chip},
+	{ .compatible = "st,m24lr64e-r", .data = &m24lr64e_r_chip},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, m24lr_of_match);
+
+/**
+ * m24lr_regmap_read - read data using regmap with retry on failure
+ * @regmap:  regmap instance for the device
+ * @buf:     buffer to store the read data
+ * @size:    number of bytes to read
+ * @offset:  starting register address
+ *
+ * Attempts to read a block of data from the device with retries and timeout.
+ * Some M24LR chips may transiently NACK reads (e.g., during internal write
+ * cycles), so this function retries with a short sleep until the timeout
+ * expires.
+ *
+ * Returns:
+ *	 Number of bytes read on success,
+ *	 -ETIMEDOUT if the read fails within the timeout window.
+ */
+static ssize_t m24lr_regmap_read(struct regmap *regmap, u8 *buf,
+				 size_t size, unsigned int offset)
+{
+	int err;
+	unsigned long timeout, read_time;
+	ssize_t ret = -ETIMEDOUT;
+
+	timeout = jiffies + msecs_to_jiffies(M24LR_READ_TIMEOUT);
+	do {
+		read_time = jiffies;
+
+		err = regmap_bulk_read(regmap, offset, buf, size);
+		if (!err) {
+			ret = size;
+			break;
+		}
+
+		usleep_range(1000, 2000);
+	} while (time_before(read_time, timeout));
+
+	return ret;
+}
+
+/**
+ * m24lr_regmap_write - write data using regmap with retry on failure
+ * @regmap: regmap instance for the device
+ * @buf:    buffer containing the data to write
+ * @size:   number of bytes to write
+ * @offset: starting register address
+ *
+ * Attempts to write a block of data to the device with retries and a timeout.
+ * Some M24LR devices may NACK I2C writes while an internal write operation
+ * is in progress. This function retries the write operation with a short delay
+ * until it succeeds or the timeout is reached.
+ *
+ * Returns:
+ *	 Number of bytes written on success,
+ *	 -ETIMEDOUT if the write fails within the timeout window.
+ */
+static ssize_t m24lr_regmap_write(struct regmap *regmap, const u8 *buf,
+				  size_t size, unsigned int offset)
+{
+	int err;
+	unsigned long timeout, write_time;
+	ssize_t ret = -ETIMEDOUT;
+
+	timeout = jiffies + msecs_to_jiffies(M24LR_WRITE_TIMEOUT);
+
+	do {
+		write_time = jiffies;
+
+		err = regmap_bulk_write(regmap, offset, buf, size);
+		if (!err) {
+			ret = size;
+			break;
+		}
+
+		usleep_range(1000, 2000);
+	} while (time_before(write_time, timeout));
+
+	return ret;
+}
+
+static ssize_t m24lr_read(struct m24lr *m24lr, u8 *buf, size_t size,
+			  unsigned int offset, bool is_eeprom)
+{
+	struct regmap *regmap;
+	ssize_t ret;
+
+	if (is_eeprom)
+		regmap = m24lr->eeprom_regmap;
+	else
+		regmap = m24lr->ctl_regmap;
+
+	mutex_lock(&m24lr->lock);
+	ret = m24lr_regmap_read(regmap, buf, size, offset);
+	mutex_unlock(&m24lr->lock);
+
+	return ret;
+}
+
+/**
+ * m24lr_write - write buffer to M24LR device with page alignment handling
+ * @m24lr:     pointer to driver context
+ * @buf:       data buffer to write
+ * @size:      number of bytes to write
+ * @offset:    target register address in the device
+ * @is_eeprom: true if the write should target the EEPROM,
+ *             false if it should target the system parameters sector.
+ *
+ * Writes data to the M24LR device using regmap, split into chunks no larger
+ * than page_size to respect device-specific write limitations (e.g., page
+ * size or I2C hold-time concerns). Each chunk is aligned to the page boundary
+ * defined by page_size.
+ *
+ * Returns:
+ *	 Total number of bytes written on success,
+ *	 A negative error code if any write fails.
+ */
+static ssize_t m24lr_write(struct m24lr *m24lr, const u8 *buf, size_t size,
+			   unsigned int offset, bool is_eeprom)
+{
+	unsigned int n, next_sector;
+	struct regmap *regmap;
+	ssize_t ret = 0;
+	ssize_t err;
+
+	if (is_eeprom)
+		regmap = m24lr->eeprom_regmap;
+	else
+		regmap = m24lr->ctl_regmap;
+
+	n = min_t(unsigned int, size, m24lr->page_size);
+	next_sector = roundup(offset + 1, m24lr->page_size);
+	if (offset + n > next_sector)
+		n = next_sector - offset;
+
+	mutex_lock(&m24lr->lock);
+	while (n) {
+		err = m24lr_regmap_write(regmap, buf + offset, n, offset);
+		if (IS_ERR_VALUE(err)) {
+			if (!ret)
+				ret = err;
+
+			break;
+		}
+
+		offset += n;
+		size -= n;
+		ret += n;
+		n = min_t(unsigned int, size, m24lr->page_size);
+	}
+	mutex_unlock(&m24lr->lock);
+
+	return ret;
+}
+
+/**
+ * m24lr_write_pass - Write password to M24LR043-R using secure format
+ * @m24lr: Pointer to device control structure
+ * @buf:   Input buffer containing hex-encoded password
+ * @count: Number of bytes in @buf
+ * @code:  Operation code to embed between password copies
+ *
+ * This function parses a 4-byte password, encodes it in  big-endian format,
+ * and constructs a 9-byte sequence of the form:
+ *
+ *	  [BE(password), code, BE(password)]
+ *
+ * The result is written to register 0x0900 (2304), which is the password
+ * register in M24LR04E-R chip.
+ *
+ * Return: Number of bytes written on success, or negative error code on failure
+ */
+static ssize_t m24lr_write_pass(struct m24lr *m24lr, const char *buf,
+				size_t count, u8 code)
+{
+	__be32 be_pass;
+	u8 output[9];
+	ssize_t ret;
+	u32 pass;
+	int err;
+
+	if (!count)
+		return -EINVAL;
+
+	if (count > 8)
+		return -EINVAL;
+
+	err = kstrtou32(buf, 16, &pass);
+	if (err)
+		return err;
+
+	be_pass = cpu_to_be32(pass);
+
+	memcpy(output, &be_pass, sizeof(be_pass));
+	output[4] = code;
+	memcpy(output + 5, &be_pass, sizeof(be_pass));
+
+	mutex_lock(&m24lr->lock);
+	ret = m24lr_regmap_write(m24lr->ctl_regmap, output, 9, 2304);
+	mutex_unlock(&m24lr->lock);
+
+	return ret;
+}
+
+static ssize_t m24lr_read_reg_le(struct m24lr *m24lr, u64 *val,
+				 unsigned int reg_addr,
+				 unsigned int reg_size)
+{
+	ssize_t ret;
+	__le64 input = 0;
+
+	ret = m24lr_read(m24lr, (u8 *)&input, reg_size, reg_addr, false);
+	if (IS_ERR_VALUE(ret))
+		return ret;
+
+	if (ret != reg_size)
+		return -EINVAL;
+
+	switch (reg_size) {
+	case 1:
+		*val = *(u8 *)&input;
+		break;
+	case 2:
+		*val = le16_to_cpu((__le16)input);
+		break;
+	case 4:
+		*val = le32_to_cpu((__le32)input);
+		break;
+	case 8:
+		*val = le64_to_cpu((__le64)input);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int m24lr_nvmem_read(void *priv, unsigned int offset, void *val,
+			    size_t bytes)
+{
+	ssize_t err;
+	struct m24lr *m24lr = priv;
+
+	if (!bytes)
+		return bytes;
+
+	if (offset + bytes > m24lr->eeprom_size)
+		return -EINVAL;
+
+	err = m24lr_read(m24lr, val, bytes, offset, true);
+	if (IS_ERR_VALUE(err))
+		return err;
+
+	return 0;
+}
+
+static int m24lr_nvmem_write(void *priv, unsigned int offset, void *val,
+			     size_t bytes)
+{
+	ssize_t err;
+	struct m24lr *m24lr = priv;
+
+	if (!bytes)
+		return -EINVAL;
+
+	if (offset + bytes > m24lr->eeprom_size)
+		return -EINVAL;
+
+	err = m24lr_write(m24lr, val, bytes, offset, true);
+	if (IS_ERR_VALUE(err))
+		return err;
+
+	return 0;
+}
+
+static ssize_t m24lr_ctl_sss_read(struct file *filep, struct kobject *kobj,
+				  const struct bin_attribute *attr, char *buf,
+				  loff_t offset, size_t count)
+{
+	struct m24lr *m24lr = attr->private;
+
+	if (!count)
+		return count;
+
+	if (size_add(offset, count) > m24lr->sss_len)
+		return -EINVAL;
+
+	return m24lr_read(m24lr, buf, count, offset, false);
+}
+
+static ssize_t m24lr_ctl_sss_write(struct file *filep, struct kobject *kobj,
+				   const struct bin_attribute *attr, char *buf,
+				   loff_t offset, size_t count)
+{
+	struct m24lr *m24lr = attr->private;
+
+	if (!count)
+		return -EINVAL;
+
+	if (size_add(offset, count) > m24lr->sss_len)
+		return -EINVAL;
+
+	return m24lr_write(m24lr, buf, count, offset, false);
+}
+static BIN_ATTR(sss, 0600, m24lr_ctl_sss_read, m24lr_ctl_sss_write, 0);
+
+static ssize_t new_pass_store(struct device *dev, struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+	struct m24lr *m24lr = i2c_get_clientdata(to_i2c_client(dev));
+
+	return m24lr_write_pass(m24lr, buf, count, 7);
+}
+static DEVICE_ATTR_WO(new_pass);
+
+static ssize_t unlock_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	struct m24lr *m24lr = i2c_get_clientdata(to_i2c_client(dev));
+
+	return m24lr_write_pass(m24lr, buf, count, 9);
+}
+static DEVICE_ATTR_WO(unlock);
+
+static ssize_t uid_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	struct m24lr *m24lr = i2c_get_clientdata(to_i2c_client(dev));
+
+	return sysfs_emit(buf, "%llx\n", m24lr->uid);
+}
+static DEVICE_ATTR_RO(uid);
+
+static ssize_t total_sectors_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	struct m24lr *m24lr = i2c_get_clientdata(to_i2c_client(dev));
+
+	return sysfs_emit(buf, "%x\n", m24lr->sss_len);
+}
+static DEVICE_ATTR_RO(total_sectors);
+
+static struct attribute *m24lr_ctl_dev_attrs[] = {
+	&dev_attr_unlock.attr,
+	&dev_attr_new_pass.attr,
+	&dev_attr_uid.attr,
+	&dev_attr_total_sectors.attr,
+	NULL,
+};
+
+static const struct m24lr_chip *m24lr_get_chip(struct device *dev)
+{
+	const struct m24lr_chip *ret;
+	const struct i2c_device_id *id;
+
+	id = i2c_match_id(m24lr_ids, to_i2c_client(dev));
+
+	if (dev->of_node && of_match_device(m24lr_of_match, dev))
+		ret = of_device_get_match_data(dev);
+	else if (id)
+		ret = (void *)id->driver_data;
+	else
+		ret = acpi_device_get_match_data(dev);
+
+	return ret;
+}
+
+static int m24lr_probe(struct i2c_client *client)
+{
+	struct regmap_config eeprom_regmap_conf = {0};
+	struct nvmem_config nvmem_conf = {0};
+	struct device *dev = &client->dev;
+	struct i2c_client *eeprom_client;
+	const struct m24lr_chip *chip;
+	struct regmap *eeprom_regmap;
+	struct nvmem_device *nvmem;
+	struct regmap *ctl_regmap;
+	struct m24lr *m24lr;
+	u32 regs[2];
+	long err;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+
+	chip = m24lr_get_chip(dev);
+	if (!chip)
+		return -ENODEV;
+
+	m24lr = devm_kzalloc(dev, sizeof(struct m24lr), GFP_KERNEL);
+	if (!m24lr)
+		return -ENOMEM;
+
+	err = device_property_read_u32_array(dev, "reg", regs, ARRAY_SIZE(regs));
+	if (err)
+		return dev_err_probe(dev, err, "Failed to read 'reg' property\n");
+
+	/* Create a second I2C client for the eeprom interface */
+	eeprom_client = devm_i2c_new_dummy_device(dev, client->adapter, regs[1]);
+	if (IS_ERR(eeprom_client))
+		return dev_err_probe(dev, PTR_ERR(eeprom_client),
+				     "Failed to create dummy I2C client for the EEPROM\n");
+
+	ctl_regmap = devm_regmap_init_i2c(client, &m24lr_ctl_regmap_conf);
+	if (IS_ERR(ctl_regmap))
+		return dev_err_probe(dev, PTR_ERR(ctl_regmap),
+				      "Failed to init regmap\n");
+
+	eeprom_regmap_conf.name = "m24lr_eeprom";
+	eeprom_regmap_conf.reg_bits = 16;
+	eeprom_regmap_conf.val_bits = 8;
+	eeprom_regmap_conf.disable_locking = true;
+	eeprom_regmap_conf.max_register = chip->eeprom_size - 1;
+
+	eeprom_regmap = devm_regmap_init_i2c(eeprom_client,
+					     &eeprom_regmap_conf);
+	if (IS_ERR(eeprom_regmap))
+		return dev_err_probe(dev, PTR_ERR(eeprom_regmap),
+				     "Failed to init regmap\n");
+
+	mutex_init(&m24lr->lock);
+	m24lr->sss_len = chip->sss_len;
+	m24lr->page_size = chip->page_size;
+	m24lr->eeprom_size = chip->eeprom_size;
+	m24lr->eeprom_regmap = eeprom_regmap;
+	m24lr->ctl_regmap = ctl_regmap;
+
+	nvmem_conf.dev = &eeprom_client->dev;
+	nvmem_conf.owner = THIS_MODULE;
+	nvmem_conf.type = NVMEM_TYPE_EEPROM;
+	nvmem_conf.reg_read = m24lr_nvmem_read;
+	nvmem_conf.reg_write = m24lr_nvmem_write;
+	nvmem_conf.size = chip->eeprom_size;
+	nvmem_conf.word_size = 1;
+	nvmem_conf.stride = 1;
+	nvmem_conf.priv = m24lr;
+
+	nvmem = devm_nvmem_register(dev, &nvmem_conf);
+	if (IS_ERR(nvmem))
+		return dev_err_probe(dev, PTR_ERR(nvmem),
+				     "Failed to register nvmem\n");
+
+	i2c_set_clientdata(client, m24lr);
+	i2c_set_clientdata(eeprom_client, m24lr);
+
+	bin_attr_sss.size = chip->sss_len;
+	bin_attr_sss.private = m24lr;
+	err = sysfs_create_bin_file(&dev->kobj, &bin_attr_sss);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Failed to create sss bin file\n");
+
+	/* test by reading the uid, if success store it */
+	err = m24lr_read_reg_le(m24lr, &m24lr->uid, 2324, sizeof(m24lr->uid));
+	if (IS_ERR_VALUE(err))
+		goto remove_bin_file;
+
+	return 0;
+
+remove_bin_file:
+	sysfs_remove_bin_file(&dev->kobj, &bin_attr_sss);
+
+	return err;
+}
+
+static void m24lr_remove(struct i2c_client *client)
+{
+	sysfs_remove_bin_file(&client->dev.kobj, &bin_attr_sss);
+}
+
+ATTRIBUTE_GROUPS(m24lr_ctl_dev);
+
+static struct i2c_driver m24lr_driver = {
+	.driver = {
+		.name = "m24lr",
+		.of_match_table = m24lr_of_match,
+		.dev_groups = m24lr_ctl_dev_groups,
+	},
+	.probe	  = m24lr_probe,
+	.remove = m24lr_remove,
+	.id_table = m24lr_ids,
+};
+module_i2c_driver(m24lr_driver);
+
+MODULE_AUTHOR("Abd-Alrhman Masalkhi");
+MODULE_DESCRIPTION("st m24lr control driver");
+MODULE_LICENSE("GPL");