提交 7b288a01 编写于 作者: J Jean Delvare 提交者: Greg Kroah-Hartman

i2c-algo-bit: Cleanups

i2c-algo-bit: Cleanups

* Uninline long functions (saves around 1 kB or 15%)
* Refactor code in sclhi()
* Drop redundant udelay on repeated start
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 82026326
......@@ -76,17 +76,15 @@ static inline void scllo(struct i2c_algo_bit_data *adap)
* Raise scl line, and do checking for delays. This is necessary for slower
* devices.
*/
static inline int sclhi(struct i2c_algo_bit_data *adap)
static int sclhi(struct i2c_algo_bit_data *adap)
{
unsigned long start;
setscl(adap,1);
/* Not all adapters have scl sense line... */
if (adap->getscl == NULL ) {
udelay(adap->udelay);
return 0;
}
if (!adap->getscl)
goto done;
start=jiffies;
while (! getscl(adap) ) {
......@@ -101,6 +99,8 @@ static inline int sclhi(struct i2c_algo_bit_data *adap)
cond_resched();
}
DEBSTAT(printk(KERN_DEBUG "needed %ld jiffies\n", jiffies-start));
done:
udelay(adap->udelay);
return 0;
}
......@@ -121,7 +121,6 @@ static void i2c_repstart(struct i2c_algo_bit_data *adap)
DEBPROTO(printk(" Sr "));
setsda(adap,1);
sclhi(adap);
udelay(adap->udelay);
sdalo(adap);
scllo(adap);
......@@ -306,7 +305,7 @@ static int test_bus(struct i2c_algo_bit_data *adap, char* name) {
* 0 chip did not answer
* -x transmission error
*/
static inline int try_address(struct i2c_adapter *i2c_adap,
static int try_address(struct i2c_adapter *i2c_adap,
unsigned char addr, int retries)
{
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
......@@ -358,7 +357,7 @@ static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
return wrcount;
}
static inline int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
int inval;
int rdcount=0; /* counts bytes read */
......@@ -408,7 +407,7 @@ static inline int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
* -x an error occurred (like: -EREMOTEIO if the device did not answer, or
* -ETIMEDOUT, for example if the lines are stuck...)
*/
static inline int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
unsigned short flags = msg->flags;
unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
......
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