i2c-nomadik: corrrect returned error numbers

The code was returning bad error numbers or just -1 in some cases.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 3bf95b90abae..a02141a99713 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -615,6 +615,8 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
                                 cause >= ARRAY_SIZE(abort_causes)
                                 ? "unknown reason" : abort_causes[cause]);
 
+                        status = status ? status : dev->result;
+
                         goto out;
                 }
                 udelay(I2C_DELAY);
@@ -759,7 +761,7 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
                                         | I2C_IT_RXFF | I2C_IT_RXFE));
 
                 if (dev->cli.count) {
-                        dev->result = -1;
+                        dev->result = -EIO;
                         dev_err(&dev->pdev->dev, "%lu bytes still remain to be"
                                         "xfered\n", dev->cli.count);
                         (void) init_hw(dev);
@@ -770,7 +772,7 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
 
         /* Master Arbitration lost interrupt */
         case I2C_IT_MAL:
-                dev->result = -1;
+                dev->result = -EIO;
                 (void) init_hw(dev);
 
                 i2c_set_bit(dev->virtbase + I2C_ICR, I2C_IT_MAL);
@@ -784,7 +786,7 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
          * during the transaction.
          */
         case I2C_IT_BERR:
-                dev->result = -1;
+                dev->result = -EIO;
                 /* get the status */
                 if (((readl(dev->virtbase + I2C_SR) >> 2) & 0x3) == I2C_ABORT)
                         (void) init_hw(dev);
@@ -800,7 +802,7 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
          * the Tx FIFO is full.
          */
         case I2C_IT_TXFOVR:
-                dev->result = -1;
+                dev->result = -EIO;
                 (void) init_hw(dev);
 
                 dev_err(&dev->pdev->dev, "Tx Fifo Over run\n");