diff options
author | Roel Kluin <roel.kluin@gmail.com> | 2009-05-05 02:39:24 -0400 |
---|---|---|
committer | Jean Delvare <khali@linux-fr.org> | 2009-05-05 02:39:24 -0400 |
commit | 4ccc28f725bc2b7b0a3bc27e9c15f4eaf63fb812 (patch) | |
tree | f1a3a3424713340aabb5722fc1accad149fc5052 /drivers/i2c/busses | |
parent | b4348f32dae3cb6eb4bc21c7ed8f76c0b11e9d6a (diff) |
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: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r-- | drivers/i2c/busses/i2c-ali1535.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ali15x3.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-amd756.c | 4 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 8 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-isch.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-nforce2.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sis5595.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sis630.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sis96x.c | 2 |
9 files changed, 13 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index 981e080b32ae..d108450df064 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c | |||
@@ -284,7 +284,7 @@ static int ali1535_transaction(struct i2c_adapter *adap) | |||
284 | && (timeout++ < MAX_TIMEOUT)); | 284 | && (timeout++ < MAX_TIMEOUT)); |
285 | 285 | ||
286 | /* If the SMBus is still busy, we give up */ | 286 | /* If the SMBus is still busy, we give up */ |
287 | if (timeout >= MAX_TIMEOUT) { | 287 | if (timeout > MAX_TIMEOUT) { |
288 | result = -ETIMEDOUT; | 288 | result = -ETIMEDOUT; |
289 | dev_err(&adap->dev, "SMBus Timeout!\n"); | 289 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
290 | } | 290 | } |
diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index 39066dee46e3..d627fceb790b 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c | |||
@@ -306,7 +306,7 @@ static int ali15x3_transaction(struct i2c_adapter *adap) | |||
306 | && (timeout++ < MAX_TIMEOUT)); | 306 | && (timeout++ < MAX_TIMEOUT)); |
307 | 307 | ||
308 | /* If the SMBus is still busy, we give up */ | 308 | /* If the SMBus is still busy, we give up */ |
309 | if (timeout >= MAX_TIMEOUT) { | 309 | if (timeout > MAX_TIMEOUT) { |
310 | result = -ETIMEDOUT; | 310 | result = -ETIMEDOUT; |
311 | dev_err(&adap->dev, "SMBus Timeout!\n"); | 311 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
312 | } | 312 | } |
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index 220f4a1eee1d..f7d6fe9c49ba 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c | |||
@@ -126,7 +126,7 @@ static int amd756_transaction(struct i2c_adapter *adap) | |||
126 | } while ((temp & (GS_HST_STS | GS_SMB_STS)) && | 126 | } while ((temp & (GS_HST_STS | GS_SMB_STS)) && |
127 | (timeout++ < MAX_TIMEOUT)); | 127 | (timeout++ < MAX_TIMEOUT)); |
128 | /* If the SMBus is still busy, we give up */ | 128 | /* If the SMBus is still busy, we give up */ |
129 | if (timeout >= MAX_TIMEOUT) { | 129 | if (timeout > MAX_TIMEOUT) { |
130 | dev_dbg(&adap->dev, "Busy wait timeout (%04x)\n", temp); | 130 | dev_dbg(&adap->dev, "Busy wait timeout (%04x)\n", temp); |
131 | goto abort; | 131 | goto abort; |
132 | } | 132 | } |
@@ -143,7 +143,7 @@ static int amd756_transaction(struct i2c_adapter *adap) | |||
143 | } while ((temp & GS_HST_STS) && (timeout++ < MAX_TIMEOUT)); | 143 | } while ((temp & GS_HST_STS) && (timeout++ < MAX_TIMEOUT)); |
144 | 144 | ||
145 | /* If the SMBus is still busy, we give up */ | 145 | /* If the SMBus is still busy, we give up */ |
146 | if (timeout >= MAX_TIMEOUT) { | 146 | if (timeout > MAX_TIMEOUT) { |
147 | dev_dbg(&adap->dev, "Completion timeout!\n"); | 147 | dev_dbg(&adap->dev, "Completion timeout!\n"); |
148 | goto abort; | 148 | goto abort; |
149 | } | 149 | } |
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 10411848fd70..9d2c5adf5d4f 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c | |||
@@ -237,7 +237,7 @@ static int i801_transaction(int xact) | |||
237 | status = inb_p(SMBHSTSTS); | 237 | status = inb_p(SMBHSTSTS); |
238 | } while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_TIMEOUT)); | 238 | } while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_TIMEOUT)); |
239 | 239 | ||
240 | result = i801_check_post(status, timeout >= MAX_TIMEOUT); | 240 | result = i801_check_post(status, timeout > MAX_TIMEOUT); |
241 | if (result < 0) | 241 | if (result < 0) |
242 | return result; | 242 | return result; |
243 | 243 | ||
@@ -257,9 +257,9 @@ static void i801_wait_hwpec(void) | |||
257 | } while ((!(status & SMBHSTSTS_INTR)) | 257 | } while ((!(status & SMBHSTSTS_INTR)) |
258 | && (timeout++ < MAX_TIMEOUT)); | 258 | && (timeout++ < MAX_TIMEOUT)); |
259 | 259 | ||
260 | if (timeout >= MAX_TIMEOUT) { | 260 | if (timeout > MAX_TIMEOUT) |
261 | dev_dbg(&I801_dev->dev, "PEC Timeout!\n"); | 261 | dev_dbg(&I801_dev->dev, "PEC Timeout!\n"); |
262 | } | 262 | |
263 | outb_p(status, SMBHSTSTS); | 263 | outb_p(status, SMBHSTSTS); |
264 | } | 264 | } |
265 | 265 | ||
@@ -344,7 +344,7 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data, | |||
344 | while ((!(status & SMBHSTSTS_BYTE_DONE)) | 344 | while ((!(status & SMBHSTSTS_BYTE_DONE)) |
345 | && (timeout++ < MAX_TIMEOUT)); | 345 | && (timeout++ < MAX_TIMEOUT)); |
346 | 346 | ||
347 | result = i801_check_post(status, timeout >= MAX_TIMEOUT); | 347 | result = i801_check_post(status, timeout > MAX_TIMEOUT); |
348 | if (result < 0) | 348 | if (result < 0) |
349 | return result; | 349 | return result; |
350 | 350 | ||
diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c index b9c01aa90036..9f6b8e0f8632 100644 --- a/drivers/i2c/busses/i2c-isch.c +++ b/drivers/i2c/busses/i2c-isch.c | |||
@@ -112,7 +112,7 @@ static int sch_transaction(void) | |||
112 | } while ((temp & 0x08) && (timeout++ < MAX_TIMEOUT)); | 112 | } while ((temp & 0x08) && (timeout++ < MAX_TIMEOUT)); |
113 | 113 | ||
114 | /* If the SMBus is still busy, we give up */ | 114 | /* If the SMBus is still busy, we give up */ |
115 | if (timeout >= MAX_TIMEOUT) { | 115 | if (timeout > MAX_TIMEOUT) { |
116 | dev_err(&sch_adapter.dev, "SMBus Timeout!\n"); | 116 | dev_err(&sch_adapter.dev, "SMBus Timeout!\n"); |
117 | result = -ETIMEDOUT; | 117 | result = -ETIMEDOUT; |
118 | } | 118 | } |
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 2ff4683703a8..ec11d1c4e77b 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c | |||
@@ -173,7 +173,7 @@ static int nforce2_check_status(struct i2c_adapter *adap) | |||
173 | temp = inb_p(NVIDIA_SMB_STS); | 173 | temp = inb_p(NVIDIA_SMB_STS); |
174 | } while ((!temp) && (timeout++ < MAX_TIMEOUT)); | 174 | } while ((!temp) && (timeout++ < MAX_TIMEOUT)); |
175 | 175 | ||
176 | if (timeout >= MAX_TIMEOUT) { | 176 | if (timeout > MAX_TIMEOUT) { |
177 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); | 177 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); |
178 | if (smbus->can_abort) | 178 | if (smbus->can_abort) |
179 | nforce2_abort(adap); | 179 | nforce2_abort(adap); |
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index f320ab27da46..139f0c7f12a4 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c | |||
@@ -256,7 +256,7 @@ static int sis5595_transaction(struct i2c_adapter *adap) | |||
256 | } while (!(temp & 0x40) && (timeout++ < MAX_TIMEOUT)); | 256 | } while (!(temp & 0x40) && (timeout++ < MAX_TIMEOUT)); |
257 | 257 | ||
258 | /* If the SMBus is still busy, we give up */ | 258 | /* If the SMBus is still busy, we give up */ |
259 | if (timeout >= MAX_TIMEOUT) { | 259 | if (timeout > MAX_TIMEOUT) { |
260 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); | 260 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); |
261 | result = -ETIMEDOUT; | 261 | result = -ETIMEDOUT; |
262 | } | 262 | } |
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 50c3610e6028..70ca41e90e58 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c | |||
@@ -173,7 +173,7 @@ static int sis630_transaction_wait(struct i2c_adapter *adap, int size) | |||
173 | } while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT)); | 173 | } while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT)); |
174 | 174 | ||
175 | /* If the SMBus is still busy, we give up */ | 175 | /* If the SMBus is still busy, we give up */ |
176 | if (timeout >= MAX_TIMEOUT) { | 176 | if (timeout > MAX_TIMEOUT) { |
177 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); | 177 | dev_dbg(&adap->dev, "SMBus Timeout!\n"); |
178 | result = -ETIMEDOUT; | 178 | result = -ETIMEDOUT; |
179 | } | 179 | } |
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index 7e1594b40579..8295885b2fdb 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c | |||
@@ -132,7 +132,7 @@ static int sis96x_transaction(int size) | |||
132 | } while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT)); | 132 | } while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT)); |
133 | 133 | ||
134 | /* If the SMBus is still busy, we give up */ | 134 | /* If the SMBus is still busy, we give up */ |
135 | if (timeout >= MAX_TIMEOUT) { | 135 | if (timeout > MAX_TIMEOUT) { |
136 | dev_dbg(&sis96x_adapter.dev, "SMBus Timeout! (0x%02x)\n", temp); | 136 | dev_dbg(&sis96x_adapter.dev, "SMBus Timeout! (0x%02x)\n", temp); |
137 | result = -ETIMEDOUT; | 137 | result = -ETIMEDOUT; |
138 | } | 138 | } |