diff --git a/Documentation/i2c/index.rst b/Documentation/i2c/index.rst
index 8b76217e370aa6c46f14b8ddb2b2a6b63d447793..6270f1fd7d4eda95fd89f4b8834160d98428ea90 100644
--- a/Documentation/i2c/index.rst
+++ b/Documentation/i2c/index.rst
@@ -17,6 +17,7 @@ Introduction
    busses/index
    i2c-topology
    muxes/i2c-mux-gpio
+   i2c-sysfs
 
 Writing device drivers
 ======================
diff --git a/drivers/i2c/busses/i2c-bcm-iproc.c b/drivers/i2c/busses/i2c-bcm-iproc.c
index cceaf69279a94e6dd3b9e08eaee59942abbb0663..6304d1dd2dd6fc15b83b14e5acda2e178716c378 100644
--- a/drivers/i2c/busses/i2c-bcm-iproc.c
+++ b/drivers/i2c/busses/i2c-bcm-iproc.c
@@ -1224,14 +1224,14 @@ static int bcm_iproc_i2c_unreg_slave(struct i2c_client *slave)
 
 	disable_irq(iproc_i2c->irq);
 
+	tasklet_kill(&iproc_i2c->slave_rx_tasklet);
+
 	/* disable all slave interrupts */
 	tmp = iproc_i2c_rd_reg(iproc_i2c, IE_OFFSET);
 	tmp &= ~(IE_S_ALL_INTERRUPT_MASK <<
 			IE_S_ALL_INTERRUPT_SHIFT);
 	iproc_i2c_wr_reg(iproc_i2c, IE_OFFSET, tmp);
 
-	tasklet_kill(&iproc_i2c->slave_rx_tasklet);
-
 	/* Erase the slave address programmed */
 	tmp = iproc_i2c_rd_reg(iproc_i2c, S_CFG_SMBUS_ADDR_OFFSET);
 	tmp &= ~BIT(S_CFG_EN_NIC_SMB_ADDR3_SHIFT);
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index cb64fe649390e932257e14db50fe7615c08dd1ea..77f576e5165229819d71ebbaa1c5bf87361b892b 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -141,7 +141,7 @@ static ssize_t i2cdev_read(struct file *file, char __user *buf, size_t count,
 	if (count > 8192)
 		count = 8192;
 
-	tmp = kmalloc(count, GFP_KERNEL);
+	tmp = kzalloc(count, GFP_KERNEL);
 	if (tmp == NULL)
 		return -ENOMEM;
 
@@ -150,7 +150,8 @@ static ssize_t i2cdev_read(struct file *file, char __user *buf, size_t count,
 
 	ret = i2c_master_recv(client, tmp, count);
 	if (ret >= 0)
-		ret = copy_to_user(buf, tmp, count) ? -EFAULT : ret;
+		if (copy_to_user(buf, tmp, ret))
+			ret = -EFAULT;
 	kfree(tmp);
 	return ret;
 }