Merge branch 'master' into for-next

Sync with Linus' tree to be able to apply pending patches that
are based on newer code already present upstream.

5 files changed, 25 insertions, 13 deletions

diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 52b545a795f2..cbc98aea5b09 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -193,7 +193,13 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
                 return;
         }
         if (twi_int_status & MCOMP) {
-                if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
+                if ((read_MASTER_CTL(iface) & MEN) == 0 &&
+                        (iface->cur_mode == TWI_I2C_MODE_REPEAT ||
+                        iface->cur_mode == TWI_I2C_MODE_COMBINED)) {
+                        iface->result = -1;
+                        write_INT_MASK(iface, 0);
+                        write_MASTER_CTL(iface, 0);
+                } else if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
                         if (iface->readNum == 0) {
                                 /* set the read number to 1 and ask for manual
                                  * stop in block combine mode
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 6c00c107ebf3..f84a63c6dd97 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -248,12 +248,12 @@ static inline int is_msgend(struct s3c24xx_i2c *i2c)
         return i2c->msg_ptr >= i2c->msg->len;
 }
 
-/* i2s_s3c_irq_nextbyte
+/* i2c_s3c_irq_nextbyte
  *
  * process an interrupt and work out what to do
  */
 
-static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
+static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
 {
         unsigned long tmp;
         unsigned char byte;
@@ -264,7 +264,6 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
         case STATE_IDLE:
                 dev_err(i2c->dev, "%s: called in STATE_IDLE\n", __func__);
                 goto out;
-                break;
 
         case STATE_STOP:
                 dev_err(i2c->dev, "%s: called in STATE_STOP\n", __func__);
@@ -444,7 +443,7 @@ static irqreturn_t s3c24xx_i2c_irq(int irqno, void *dev_id)
         /* pretty much this leaves us with the fact that we've
          * transmitted or received whatever byte we last sent */
 
-        i2s_s3c_irq_nextbyte(i2c, status);
+        i2c_s3c_irq_nextbyte(i2c, status);
 
  out:
         return IRQ_HANDLED;
diff --git a/drivers/i2c/busses/i2c-taos-evm.c b/drivers/i2c/busses/i2c-taos-evm.c
index dd39c1eb03ed..26c352a09298 100644
--- a/drivers/i2c/busses/i2c-taos-evm.c
+++ b/drivers/i2c/busses/i2c-taos-evm.c
@@ -234,7 +234,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 
         if (taos->state != TAOS_STATE_IDLE) {
                 err = -ENODEV;
-                dev_dbg(&serio->dev, "TAOS EVM reset failed (state=%d, "
+                dev_err(&serio->dev, "TAOS EVM reset failed (state=%d, "
                         "pos=%d)\n", taos->state, taos->pos);
                 goto exit_close;
         }
@@ -255,7 +255,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
                                          msecs_to_jiffies(250));
         if (taos->state != TAOS_STATE_IDLE) {
                 err = -ENODEV;
-                dev_err(&adapter->dev, "Echo off failed "
+                dev_err(&serio->dev, "TAOS EVM echo off failed "
                         "(state=%d)\n", taos->state);
                 goto exit_close;
         }
@@ -263,7 +263,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
         err = i2c_add_adapter(adapter);
         if (err)
                 goto exit_close;
-        dev_dbg(&serio->dev, "Connected to TAOS EVM\n");
+        dev_info(&serio->dev, "Connected to TAOS EVM\n");
 
         taos->client = taos_instantiate_device(adapter);
         return 0;
@@ -288,7 +288,7 @@ static void taos_disconnect(struct serio *serio)
         serio_set_drvdata(serio, NULL);
         kfree(taos);
 
-        dev_dbg(&serio->dev, "Disconnected from TAOS EVM\n");
+        dev_info(&serio->dev, "Disconnected from TAOS EVM\n");
 }
 
 static struct serio_device_id taos_serio_ids[] = {
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 4d9319665e32..fb3b4f8f8152 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -40,8 +40,10 @@
 #define I2C_CNFG_NEW_MASTER_FSM                 (1<<11)
 #define I2C_STATUS                              0x01C
 #define I2C_SL_CNFG                             0x020
+#define I2C_SL_CNFG_NACK                        (1<<1)
 #define I2C_SL_CNFG_NEWSL                       (1<<2)
 #define I2C_SL_ADDR1                            0x02c
+#define I2C_SL_ADDR2                            0x030
 #define I2C_TX_FIFO                             0x050
 #define I2C_RX_FIFO                             0x054
 #define I2C_PACKET_TRANSFER_STATUS              0x058
@@ -337,7 +339,11 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
 
         if (!i2c_dev->is_dvc) {
                 u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
-                i2c_writel(i2c_dev, sl_cfg | I2C_SL_CNFG_NEWSL, I2C_SL_CNFG);
+                sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL;
+                i2c_writel(i2c_dev, sl_cfg, I2C_SL_CNFG);
+                i2c_writel(i2c_dev, 0xfc, I2C_SL_ADDR1);
+                i2c_writel(i2c_dev, 0x00, I2C_SL_ADDR2);
+
         }
 
         val = 7 << I2C_FIFO_CONTROL_TX_TRIG_SHIFT |
diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index 54e1ce73534b..6f8953664636 100644
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -201,10 +201,11 @@ static int pca954x_probe(struct i2c_client *client,
 
         i2c_set_clientdata(client, data);
 
-        /* Read the mux register at addr to verify
-         * that the mux is in fact present.
+        /* Write the mux register at addr to verify
+         * that the mux is in fact present. This also
+         * initializes the mux to disconnected state.
          */
-        if (i2c_smbus_read_byte(client) < 0) {
+        if (i2c_smbus_write_byte(client, 0) < 0) {
                 dev_warn(&client->dev, "probe failed\n");
                 goto exit_free;
         }