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Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6 

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c-algo-pca: Let PCA9564 recover from unacked data byte (state 0x30)
  i2c-algo-bit: Fix timeout test
  i2c: Timeouts off by 1
This commit is contained in:
Linus Torvalds 2009-05-05 08:27:14 -07:00
parent 80445de577 2196d1cf4a
commit f328ddc154
11 changed files with 25 additions and 14 deletions
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2
drivers/i2c/algos/i2c-algo-bit.c
View File

@ -104,7 +104,7 @@ static int sclhi(struct i2c_algo_bit_data *adap)
* chips may hold it low ("clock stretching") while they
* are processing data internally.
*/
if (time_after_eq(jiffies, start + adap->timeout))
if (time_after(jiffies, start + adap->timeout))
return -ETIMEDOUT;
cond_resched();
}

11
drivers/i2c/algos/i2c-algo-pca.c
View File

@ -287,10 +287,21 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
case 0x30: /* Data byte in I2CDAT has been transmitted; NOT ACK has been received */
DEB2("NOT ACK received after data byte\n");
pca_stop(adap);
goto out;
case 0x38: /* Arbitration lost during SLA+W, SLA+R or data bytes */
DEB2("Arbitration lost\n");
/*
* The PCA9564 data sheet (2006-09-01) says "A
* START condition will be transmitted when the
* bus becomes free (STOP or SCL and SDA high)"
* when the STA bit is set (p. 11).
*
* In case this won't work, try pca_reset()
* instead.
*/
pca_start(adap);
goto out;
case 0x58: /* Data byte has been received; NOT ACK has been returned */

2
drivers/i2c/busses/i2c-ali1535.c
View File

@ -284,7 +284,7 @@ static int ali1535_transaction(struct i2c_adapter *adap)
&& (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
result = -ETIMEDOUT;
dev_err(&adap->dev, "SMBus Timeout!\n");
}

2
drivers/i2c/busses/i2c-ali15x3.c
View File

@ -306,7 +306,7 @@ static int ali15x3_transaction(struct i2c_adapter *adap)
&& (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
result = -ETIMEDOUT;
dev_err(&adap->dev, "SMBus Timeout!\n");
}

4
drivers/i2c/busses/i2c-amd756.c
View File

@ -126,7 +126,7 @@ static int amd756_transaction(struct i2c_adapter *adap)
} while ((temp & (GS_HST_STS | GS_SMB_STS)) &&
(timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&adap->dev, "Busy wait timeout (%04x)\n", temp);
goto abort;
}
@ -143,7 +143,7 @@ static int amd756_transaction(struct i2c_adapter *adap)
} while ((temp & GS_HST_STS) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&adap->dev, "Completion timeout!\n");
goto abort;
}

8
drivers/i2c/busses/i2c-i801.c
View File

@ -237,7 +237,7 @@ static int i801_transaction(int xact)
status = inb_p(SMBHSTSTS);
} while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_TIMEOUT));
result = i801_check_post(status, timeout >= MAX_TIMEOUT);
result = i801_check_post(status, timeout > MAX_TIMEOUT);
if (result < 0)
return result;
@ -257,9 +257,9 @@ static void i801_wait_hwpec(void)
} while ((!(status & SMBHSTSTS_INTR))
&& (timeout++ < MAX_TIMEOUT));
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT)
dev_dbg(&I801_dev->dev, "PEC Timeout!\n");
}
outb_p(status, SMBHSTSTS);
}
@ -344,7 +344,7 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
while ((!(status & SMBHSTSTS_BYTE_DONE))
&& (timeout++ < MAX_TIMEOUT));
result = i801_check_post(status, timeout >= MAX_TIMEOUT);
result = i801_check_post(status, timeout > MAX_TIMEOUT);
if (result < 0)
return result;

2
drivers/i2c/busses/i2c-isch.c
View File

@ -112,7 +112,7 @@ static int sch_transaction(void)
} while ((temp & 0x08) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_err(&sch_adapter.dev, "SMBus Timeout!\n");
result = -ETIMEDOUT;
}

2
drivers/i2c/busses/i2c-nforce2.c
View File

@ -173,7 +173,7 @@ static int nforce2_check_status(struct i2c_adapter *adap)
temp = inb_p(NVIDIA_SMB_STS);
} while ((!temp) && (timeout++ < MAX_TIMEOUT));
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&adap->dev, "SMBus Timeout!\n");
if (smbus->can_abort)
nforce2_abort(adap);

2
drivers/i2c/busses/i2c-sis5595.c
View File

@ -256,7 +256,7 @@ static int sis5595_transaction(struct i2c_adapter *adap)
} while (!(temp & 0x40) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&adap->dev, "SMBus Timeout!\n");
result = -ETIMEDOUT;
}

2
drivers/i2c/busses/i2c-sis630.c
View File

@ -173,7 +173,7 @@ static int sis630_transaction_wait(struct i2c_adapter *adap, int size)
} while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&adap->dev, "SMBus Timeout!\n");
result = -ETIMEDOUT;
}

2
drivers/i2c/busses/i2c-sis96x.c
View File

@ -132,7 +132,7 @@ static int sis96x_transaction(int size)
} while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
if (timeout > MAX_TIMEOUT) {
dev_dbg(&sis96x_adapter.dev, "SMBus Timeout! (0x%02x)\n", temp);
result = -ETIMEDOUT;
}