Merge branch 'i2c/for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "Summary:

   - legacy PM code removed from the core, there were no users anymore
     (thanks to Lars-Peter Clausen)

   - new driver for Broadcom iProc

   - bigger driver updates for designware, rk3x, cadence, ocores

   - a bunch of smaller updates and bugfixes"

* 'i2c/for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (31 commits)
  i2c: ocores: rework clk code to handle NULL cookie
  i2c: designware-baytrail: another fixup for proper Kconfig dependencies
  i2c: fix reference to functionality constants definition
  i2c: iproc: Add Broadcom iProc I2C Driver
  i2c: designware-pci: update Intel copyright line
  i2c: ocores: add common clock support
  i2c: hix5hd2: add COMPILE_TEST
  i2c: clarify comments about the dev_released completion
  i2c: ocores: fix clock-frequency binding usage
  i2c: tegra: Maintain CPU endianness
  i2c: designware-baytrail: use proper Kconfig dependencies
  i2c: designware: Do not calculate SCL timing parameters needlessly
  i2c: do not try to load modules for of-registered devices
  i2c: designware: Add Intel Baytrail PMIC I2C bus support
  i2c: designware: Add i2c bus locking support
  of: i2c: Add i2c-mux-idle-disconnect DT property to PCA954x mux driver
  i2c: designware: use {readl|writel}_relaxed instead of readl/writel
  i2c: designware-pci: no need to provide clk_khz
  i2c: designware-pci: remove Moorestown support
  i2c: imx: whitespace and checkpatch cleanup
  ...

1 files changed, 17 insertions, 16 deletions

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 7f3a9fe..d7b26fc 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -201,7 +201,7 @@ struct imx_i2c_struct {
 	void __iomem		*base;
 	wait_queue_head_t	queue;
 	unsigned long		i2csr;
-	unsigned int 		disable_delay;
+	unsigned int		disable_delay;
 	int			stopped;
 	unsigned int		ifdr; /* IMX_I2C_IFDR */
 	unsigned int		cur_clk;
@@ -295,7 +295,6 @@ static void i2c_imx_dma_request(struct imx_i2c_struct *i2c_imx,
 	dma->chan_tx = dma_request_slave_channel(dev, "tx");
 	if (!dma->chan_tx) {
 		dev_dbg(dev, "can't request DMA tx channel\n");
-		ret = -ENODEV;
 		goto fail_al;
 	}
 
@@ -313,7 +312,6 @@ static void i2c_imx_dma_request(struct imx_i2c_struct *i2c_imx,
 	dma->chan_rx = dma_request_slave_channel(dev, "rx");
 	if (!dma->chan_rx) {
 		dev_dbg(dev, "can't request DMA rx channel\n");
-		ret = -ENODEV;
 		goto fail_tx;
 	}
 
@@ -481,8 +479,8 @@ static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx)
 	i2c_clk_rate = clk_get_rate(i2c_imx->clk);
 	if (i2c_imx->cur_clk == i2c_clk_rate)
 		return;
-	else
-		i2c_imx->cur_clk = i2c_clk_rate;
+
+	i2c_imx->cur_clk = i2c_clk_rate;
 
 	div = (i2c_clk_rate + i2c_imx->bitrate - 1) / i2c_imx->bitrate;
 	if (div < i2c_clk_div[0].div)
@@ -490,7 +488,8 @@ static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx)
 	else if (div > i2c_clk_div[i2c_imx->hwdata->ndivs - 1].div)
 		i = i2c_imx->hwdata->ndivs - 1;
 	else
-		for (i = 0; i2c_clk_div[i].div < div; i++);
+		for (i = 0; i2c_clk_div[i].div < div; i++)
+			;
 
 	/* Store divider value */
 	i2c_imx->ifdr = i2c_clk_div[i].val;
@@ -628,9 +627,9 @@ static int i2c_imx_dma_write(struct imx_i2c_struct *i2c_imx,
 	result = wait_for_completion_timeout(
 				&i2c_imx->dma->cmd_complete,
 				msecs_to_jiffies(DMA_TIMEOUT));
-	if (result <= 0) {
+	if (result == 0) {
 		dmaengine_terminate_all(dma->chan_using);
-		return result ?: -ETIMEDOUT;
+		return -ETIMEDOUT;
 	}
 
 	/* Waiting for transfer complete. */
@@ -686,9 +685,9 @@ static int i2c_imx_dma_read(struct imx_i2c_struct *i2c_imx,
 	result = wait_for_completion_timeout(
 				&i2c_imx->dma->cmd_complete,
 				msecs_to_jiffies(DMA_TIMEOUT));
-	if (result <= 0) {
+	if (result == 0) {
 		dmaengine_terminate_all(dma->chan_using);
-		return result ?: -ETIMEDOUT;
+		return -ETIMEDOUT;
 	}
 
 	/* waiting for transfer complete. */
@@ -822,6 +821,7 @@ static int i2c_imx_read(struct imx_i2c_struct *i2c_imx, struct i2c_msg *msgs, bo
 	/* read data */
 	for (i = 0; i < msgs->len; i++) {
 		u8 len = 0;
+
 		result = i2c_imx_trx_complete(i2c_imx);
 		if (result)
 			return result;
@@ -917,15 +917,16 @@ static int i2c_imx_xfer(struct i2c_adapter *adapter,
 		/* write/read data */
 #ifdef CONFIG_I2C_DEBUG_BUS
 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);
-		dev_dbg(&i2c_imx->adapter.dev, "<%s> CONTROL: IEN=%d, IIEN=%d, "
-			"MSTA=%d, MTX=%d, TXAK=%d, RSTA=%d\n", __func__,
+		dev_dbg(&i2c_imx->adapter.dev,
+			"<%s> CONTROL: IEN=%d, IIEN=%d, MSTA=%d, MTX=%d, TXAK=%d, RSTA=%d\n",
+			__func__,
 			(temp & I2CR_IEN ? 1 : 0), (temp & I2CR_IIEN ? 1 : 0),
 			(temp & I2CR_MSTA ? 1 : 0), (temp & I2CR_MTX ? 1 : 0),
 			(temp & I2CR_TXAK ? 1 : 0), (temp & I2CR_RSTA ? 1 : 0));
 		temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);
 		dev_dbg(&i2c_imx->adapter.dev,
-			"<%s> STATUS: ICF=%d, IAAS=%d, IBB=%d, "
-			"IAL=%d, SRW=%d, IIF=%d, RXAK=%d\n", __func__,
+			"<%s> STATUS: ICF=%d, IAAS=%d, IBB=%d, IAL=%d, SRW=%d, IIF=%d, RXAK=%d\n",
+			__func__,
 			(temp & I2SR_ICF ? 1 : 0), (temp & I2SR_IAAS ? 1 : 0),
 			(temp & I2SR_IBB ? 1 : 0), (temp & I2SR_IAL ? 1 : 0),
 			(temp & I2SR_SRW ? 1 : 0), (temp & I2SR_IIF ? 1 : 0),
@@ -1004,7 +1005,7 @@ static int i2c_imx_probe(struct platform_device *pdev)
 	i2c_imx->adapter.owner		= THIS_MODULE;
 	i2c_imx->adapter.algo		= &i2c_imx_algo;
 	i2c_imx->adapter.dev.parent	= &pdev->dev;
-	i2c_imx->adapter.nr 		= pdev->id;
+	i2c_imx->adapter.nr		= pdev->id;
 	i2c_imx->adapter.dev.of_node	= pdev->dev.of_node;
 	i2c_imx->base			= base;
 
@@ -1063,7 +1064,7 @@ static int i2c_imx_probe(struct platform_device *pdev)
 		i2c_imx->adapter.name);
 	dev_info(&i2c_imx->adapter.dev, "IMX I2C adapter registered\n");
 
-	/* Init DMA config if support*/
+	/* Init DMA config if supported */
 	i2c_imx_dma_request(i2c_imx, phy_addr);
 
 	return 0;   /* Return OK */