提交 4ccc28f7 编写于 作者: R Roel Kluin 提交者: Jean Delvare

i2c: Timeouts off by 1

with while (timeout++ < MAX_TIMEOUT); timeout reaches MAX_TIMEOUT + 1
after the loop, so the tests below are off by one.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>
上级 b4348f32
......@@ -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");
}
......
......@@ -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");
}
......
......@@ -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;
}
......
......@@ -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;
......
......@@ -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;
}
......
......@@ -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);
......
......@@ -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;
}
......
......@@ -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;
}
......
......@@ -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;
}
......
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