diff options
Diffstat (limited to 'drivers/media/common/saa7146_i2c.c')
| -rw-r--r-- | drivers/media/common/saa7146_i2c.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/media/common/saa7146_i2c.c b/drivers/media/common/saa7146_i2c.c index c11da4d09cd0..7e8f56815998 100644 --- a/drivers/media/common/saa7146_i2c.c +++ b/drivers/media/common/saa7146_i2c.c @@ -293,7 +293,6 @@ static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *m int i = 0, count = 0; __le32 *buffer = dev->d_i2c.cpu_addr; int err = 0; - int address_err = 0; int short_delay = 0; if (mutex_lock_interruptible(&dev->i2c_lock)) @@ -333,17 +332,10 @@ static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *m i2c address probing, however, and address errors indicate that a device is really *not* there. retrying in that case increases the time the device needs to probe greatly, so - it should be avoided. because of the fact, that only - analog based cards use irq based i2c transactions (for dvb - cards, this screwes up other interrupt sources), we bail out - completely for analog cards after an address error and trust - the saa7146 address error detection. */ - if ( -EREMOTEIO == err ) { - if( 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) { - goto out; - } - address_err++; - } + it should be avoided. So we bail out in irq mode after an + address error and trust the saa7146 address error detection. */ + if (-EREMOTEIO == err && 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) + goto out; DEB_I2C(("error while sending message(s). starting again.\n")); break; } @@ -358,10 +350,9 @@ static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *m } while (err != num && retries--); - /* if every retry had an address error, exit right away */ - if (address_err == retries) { + /* quit if any error occurred */ + if (err != num) goto out; - } /* if any things had to be read, get the results */ if ( 0 != saa7146_i2c_msg_cleanup(msgs, num, buffer)) { @@ -390,7 +381,8 @@ out: /* utility functions */ static int saa7146_i2c_xfer(struct i2c_adapter* adapter, struct i2c_msg *msg, int num) { - struct saa7146_dev* dev = i2c_get_adapdata(adapter); + struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter); + struct saa7146_dev *dev = to_saa7146_dev(v4l2_dev); /* use helper function to transfer data */ return saa7146_i2c_transfer(dev, msg, num, adapter->retries); @@ -417,9 +409,8 @@ int saa7146_i2c_adapter_prepare(struct saa7146_dev *dev, struct i2c_adapter *i2c dev->i2c_bitrate = bitrate; saa7146_i2c_reset(dev); - if( NULL != i2c_adapter ) { - BUG_ON(!i2c_adapter->class); - i2c_set_adapdata(i2c_adapter,dev); + if (i2c_adapter) { + i2c_set_adapdata(i2c_adapter, &dev->v4l2_dev); i2c_adapter->dev.parent = &dev->pci->dev; i2c_adapter->algo = &saa7146_algo; i2c_adapter->algo_data = NULL; |