5 files changed, 28 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 6283b99d2b17..d1263b82d646 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -94,9 +94,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
 static int dw_i2c_acpi_configure(struct platform_device *pdev)
 {
 	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
+	u32 ss_ht = 0, fp_ht = 0, hs_ht = 0, fs_ht = 0;
 	acpi_handle handle = ACPI_HANDLE(&pdev->dev);
 	const struct acpi_device_id *id;
-	u32 ss_ht, fp_ht, hs_ht, fs_ht;
 	struct acpi_device *adev;
 	const char *uid;
 
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 95ed17183e73..54a47b40546f 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -734,9 +734,9 @@ static int i2c_imx_dma_read(struct imx_i2c_struct *i2c_imx,
 		 * the first read operation, otherwise the first read cost
 		 * one extra clock cycle.
 		 */
-		temp = readb(i2c_imx->base + IMX_I2C_I2CR);
+		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);
 		temp |= I2CR_MTX;
-		writeb(temp, i2c_imx->base + IMX_I2C_I2CR);
+		imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);
 	}
 	msgs->buf[msgs->len-1] = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);
 
@@ -857,9 +857,9 @@ static int i2c_imx_read(struct imx_i2c_struct *i2c_imx, struct i2c_msg *msgs, bo
 				 * the first read operation, otherwise the first read cost
 				 * one extra clock cycle.
 				 */
-				temp = readb(i2c_imx->base + IMX_I2C_I2CR);
+				temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);
 				temp |= I2CR_MTX;
-				writeb(temp, i2c_imx->base + IMX_I2C_I2CR);
+				imx_i2c_write_reg(temp, i2c_imx, IMX_I2C_I2CR);
 			}
 		} else if (i == (msgs->len - 2)) {
 			dev_dbg(&i2c_imx->adapter.dev,
diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
index f573448d2132..e98e44e584a4 100644
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -584,7 +584,7 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr,
 
 	/* unmap the data buffer */
 	if (dma_size != 0)
-		dma_unmap_single(&adap->dev, dma_addr, dma_size, dma_direction);
+		dma_unmap_single(dev, dma_addr, dma_size, dma_direction);
 
 	if (unlikely(!time_left)) {
 		dev_err(dev, "completion wait timed out\n");
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 214bf2835d1f..8be3e6cb8fe6 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -319,7 +319,7 @@ static void rcar_i2c_dma_unmap(struct rcar_i2c_priv *priv)
 	rcar_i2c_write(priv, ICFBSCR, TCYC06);
 
 	dma_unmap_single(chan->device->dev, sg_dma_address(&priv->sg),
-			 priv->msg->len, priv->dma_direction);
+			 sg_dma_len(&priv->sg), priv->dma_direction);
 
 	priv->dma_direction = DMA_NONE;
 }
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
index 0ed77eeff31e..a2e3dd715380 100644
--- a/drivers/i2c/busses/i2c-tiny-usb.c
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -178,22 +178,39 @@ static int usb_read(struct i2c_adapter *adapter, int cmd,
 		    int value, int index, void *data, int len)
 {
 	struct i2c_tiny_usb *dev = (struct i2c_tiny_usb *)adapter->algo_data;
+	void *dmadata = kmalloc(len, GFP_KERNEL);
+	int ret;
+
+	if (!dmadata)
+		return -ENOMEM;
 
 	/* do control transfer */
-	return usb_control_msg(dev->usb_dev, usb_rcvctrlpipe(dev->usb_dev, 0),
+	ret = usb_control_msg(dev->usb_dev, usb_rcvctrlpipe(dev->usb_dev, 0),
 			       cmd, USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
-			       USB_DIR_IN, value, index, data, len, 2000);
+			       USB_DIR_IN, value, index, dmadata, len, 2000);
+
+	memcpy(data, dmadata, len);
+	kfree(dmadata);
+	return ret;
 }
 
 static int usb_write(struct i2c_adapter *adapter, int cmd,
 		     int value, int index, void *data, int len)
 {
 	struct i2c_tiny_usb *dev = (struct i2c_tiny_usb *)adapter->algo_data;
+	void *dmadata = kmemdup(data, len, GFP_KERNEL);
+	int ret;
+
+	if (!dmadata)
+		return -ENOMEM;
 
 	/* do control transfer */
-	return usb_control_msg(dev->usb_dev, usb_sndctrlpipe(dev->usb_dev, 0),
+	ret = usb_control_msg(dev->usb_dev, usb_sndctrlpipe(dev->usb_dev, 0),
 			       cmd, USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
-			       value, index, data, len, 2000);
+			       value, index, dmadata, len, 2000);
+
+	kfree(dmadata);
+	return ret;
 }
 
 static void i2c_tiny_usb_free(struct i2c_tiny_usb *dev)