diff --git a/Documentation/w1/w1.generic b/Documentation/w1/w1.generic
index f937fbe1cacbc86ceb808a1d4ab1fe39f793a104..4c6509dd478923285bc883867635fe8365faa77b 100644
--- a/Documentation/w1/w1.generic
+++ b/Documentation/w1/w1.generic
@@ -27,8 +27,19 @@ When a w1 master driver registers with the w1 subsystem, the following occurs:
 
 When a device is found on the bus, w1 core checks if driver for it's family is
 loaded. If so, the family driver is attached to the slave.
-If there is no driver for the family, a simple sysfs entry is created
-for the slave device.
+If there is no driver for the family, default one is assigned, which allows to perform
+almost any kind of operations. Each logical operation is a transaction
+in nature, which can contain several (two or one) low-level operations.
+Let's see how one can read EEPROM context:
+1. one must write control buffer, i.e. buffer containing command byte
+and two byte address. At this step bus is reset and appropriate device
+is selected using either W1_SKIP_ROM or W1_MATCH_ROM command.
+Then provided control buffer is being written to the wire.
+2. reading. This will issue reading eeprom response.
+
+It is possible that between 1. and 2. w1 master thread will reset bus for searching
+and slave device will be even removed, but in this case 0xff will
+be read, since no device was selected.
 
 
 W1 device families
@@ -89,4 +100,5 @@ driver             - (standard) symlink to the w1 driver
 name               - the device name, usually the same as the directory name
 w1_slave           - (optional) a binary file whose meaning depends on the
                      family driver
-
+rw		   - (optional) created for slave devices which do not have
+		     appropriate family driver. Allows to read/write binary data.
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index a698b517e8634be7c6e6ab22303d9dbf6646a439..c9486c168505515d87befcf91ea81455554b8bf6 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -139,7 +139,74 @@ static struct bin_attribute w1_slave_attr_bin_id = {
 };
 
 /* Default family */
-static struct w1_family w1_default_family;
+
+static ssize_t w1_default_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+	struct w1_slave *sl = kobj_to_w1_slave(kobj);
+
+	if (down_interruptible(&sl->master->mutex)) {
+		count = 0;
+		goto out;
+	}
+
+	if (w1_reset_select_slave(sl)) {
+		count = 0;
+		goto out_up;
+	}
+
+	w1_write_block(sl->master, buf, count);
+
+out_up:
+	up(&sl->master->mutex);
+out:
+	return count;
+}
+
+static ssize_t w1_default_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+	struct w1_slave *sl = kobj_to_w1_slave(kobj);
+
+	if (down_interruptible(&sl->master->mutex)) {
+		count = 0;
+		goto out;
+	}
+
+	w1_read_block(sl->master, buf, count);
+
+	up(&sl->master->mutex);
+out:
+	return count;
+}
+
+static struct bin_attribute w1_default_attr = {
+      .attr = {
+              .name = "rw",
+              .mode = S_IRUGO | S_IWUSR,
+              .owner = THIS_MODULE,
+      },
+      .size = PAGE_SIZE,
+      .read = w1_default_read,
+      .write = w1_default_write,
+};
+
+static int w1_default_add_slave(struct w1_slave *sl)
+{
+	return sysfs_create_bin_file(&sl->dev.kobj, &w1_default_attr);
+}
+
+static void w1_default_remove_slave(struct w1_slave *sl)
+{
+	sysfs_remove_bin_file(&sl->dev.kobj, &w1_default_attr);
+}
+
+static struct w1_family_ops w1_default_fops = {
+	.add_slave	= w1_default_add_slave,
+	.remove_slave	= w1_default_remove_slave,
+};
+
+static struct w1_family w1_default_family = {
+	.fops = &w1_default_fops,
+};
 
 static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size);
 
diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
index 56980505e6c4451385dc361de39a894b2ffbf3d0..02e8caddfb367407056e2b3bea0f336eeb258bec 100644
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -60,7 +60,7 @@ struct w1_reg_num
 #define W1_READ_PSUPPLY		0xB4
 #define W1_MATCH_ROM		0x55
 
-#define W1_SLAVE_ACTIVE		(1<<0)
+#define W1_SLAVE_ACTIVE		0
 
 struct w1_slave
 {