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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-05-05 15:27:14 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-05-05 15:27:14 (GMT) |
commit | f328ddc154605be11c4ca38fee6ace8adb140087 (patch) | |
tree | 53589963a1b6af22d0a26db7ab1e03dfeedb2b89 | |
parent | 80445de57764b45fc26315c19fe7dc9fc57c2c65 (diff) | |
parent | 2196d1cf4afab93fb64c2e5b417096e49b661612 (diff) | |
download | linux-fsl-qoriq-f328ddc154605be11c4ca38fee6ace8adb140087.tar.xz |
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
-rw-r--r-- | drivers/i2c/algos/i2c-algo-bit.c | 2 | ||||
-rw-r--r-- | drivers/i2c/algos/i2c-algo-pca.c | 11 | ||||
-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 |
11 files changed, 25 insertions, 14 deletions
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index d420cc5..e25e139 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -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(); } diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 6318f7d..78d42aa 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -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 */ diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index 981e080..d108450 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) && (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"); } diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index 39066de..d627fce 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) && (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"); } diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index 220f4a1..f7d6fe9 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) } 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; } diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 1041184..9d2c5ad 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) 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; diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c index b9c01aa..9f6b8e0 100644 --- a/drivers/i2c/busses/i2c-isch.c +++ b/drivers/i2c/busses/i2c-isch.c @@ -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; } diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 2ff4683..ec11d1c 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) 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); diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index f320ab2..139f0c7 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) } 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; } diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 50c3610..70ca41e 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) } 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; } diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index 7e1594b..8295885 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) } 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; } |