Greg KH
2005-06-22T06:32:24Z

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

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>

---
commit 815f55f280fb2781ba1c2a350516b73e55119c60
tree 48c06bd1650d44aa274989ce2696eb5091d3805c
parent 30aedcb33970367e50b5edf373e9cd1a5cebcbe1
author Jean Delvare <khali@linux-fr.org> Sat, 07 May 2005 22:58:46 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> Tue, 21 Jun 2005 21:51:55 -0700

drivers/i2c/i2c-core.c | 64 +++++++++++++++---------------------------------
1 files changed, 20 insertions(+), 44 deletions(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -611,27 +611,16 @@ int i2c_master_send(struct i2c_client *c
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);
-
- /* 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;
- }
+ 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;
}

int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
@@ -639,31 +628,18 @@ int i2c_master_recv(struct i2c_client *c
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;
}