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[PATCH] I2C: Remove redundancy from i2c-core.c

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Call i2c_transfer() from i2c_master_send() and i2c_master_recv() to
avoid the redundant code that was in all three functions.  It also
removes unnecessary debug statements as suggested by Jean Delvare.

This is important for the non-blocking interfaces because they will
have to handle a non-blocking interface in this area.  Having it in
one place greatly simplifies the changes.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare 2005-05-07 22:58:46 +02:00 committed by Greg Kroah-Hartman
parent 30aedcb339
commit 815f55f280
1 changed files with 19 additions and 43 deletions
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62
drivers/i2c/i2c-core.c
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@ -611,27 +611,16 @@ int i2c_master_send(struct i2c_client *client,const char *buf ,int count)
struct i2c_adapter *adap=client->adapter;
struct i2c_msg msg;
if (client->adapter->algo->master_xfer) {
msg.addr = client->addr;
msg.flags = client->flags & I2C_M_TEN;
msg.len = count;
msg.buf = (char *)buf;
msg.addr = client->addr;
msg.flags = client->flags & I2C_M_TEN;
msg.len = count;
msg.buf = (char *)buf;
dev_dbg(&client->adapter->dev, "master_send: writing %d bytes.\n",
count);
down(&adap->bus_lock);
ret = adap->algo->master_xfer(adap,&msg,1);
up(&adap->bus_lock);
ret = i2c_transfer(adap, &msg, 1);
/* if everything went ok (i.e. 1 msg transmitted), return #bytes
* transmitted, else error code.
*/
return (ret == 1 )? count : ret;
} else {
dev_err(&client->adapter->dev, "I2C level transfers not supported\n");
return -ENOSYS;
}
/* If everything went ok (i.e. 1 msg transmitted), return #bytes
transmitted, else error code. */
return (ret == 1) ? count : ret;
}
int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
@ -639,31 +628,18 @@ int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
struct i2c_adapter *adap=client->adapter;
struct i2c_msg msg;
int ret;
if (client->adapter->algo->master_xfer) {
msg.addr = client->addr;
msg.flags = client->flags & I2C_M_TEN;
msg.flags |= I2C_M_RD;
msg.len = count;
msg.buf = buf;
dev_dbg(&client->adapter->dev, "master_recv: reading %d bytes.\n",
count);
down(&adap->bus_lock);
ret = adap->algo->master_xfer(adap,&msg,1);
up(&adap->bus_lock);
dev_dbg(&client->adapter->dev, "master_recv: return:%d (count:%d, addr:0x%02x)\n",
ret, count, client->addr);
/* if everything went ok (i.e. 1 msg transmitted), return #bytes
* transmitted, else error code.
*/
return (ret == 1 )? count : ret;
} else {
dev_err(&client->adapter->dev, "I2C level transfers not supported\n");
return -ENOSYS;
}
msg.addr = client->addr;
msg.flags = client->flags & I2C_M_TEN;
msg.flags |= I2C_M_RD;
msg.len = count;
msg.buf = buf;
ret = i2c_transfer(adap, &msg, 1);
/* If everything went ok (i.e. 1 msg transmitted), return #bytes
transmitted, else error code. */
return (ret == 1) ? count : ret;
}