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| author | Kaiwan N Billimoria <kaiwan@designergraphix.com> | 2009-01-07 16:37:34 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2009-01-07 16:37:34 +0100 |
| commit | 2b7300513b98e05058a803de3beb8a1c0a0c61d9 (patch) | |
| tree | 279b61da3b204e44bc52ad62a4836e28ffce1bde /drivers/hwmon | |
| parent | 0589c2de643ef71a684ba6d219532f9e2a3e554b (diff) | |
| download | lwn-2b7300513b98e05058a803de3beb8a1c0a0c61d9.tar.gz lwn-2b7300513b98e05058a803de3beb8a1c0a0c61d9.zip | |
hwmon: (lm70) Code streamlining and cleanup
This fixes a byteswap bug in the LM70 temperature sensor driver,
which was previously covered up by a converse bug in the driver
for the LM70EVAL-LLP board (which is also fixed).
Other fixes: doc updates, remove an annoying msleep(), and improve
three-wire protocol handling.
Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com>
[ dbrownell@users.sourceforge.net: doc and whitespace tweaks ]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/lm70.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c index d435f003292d..9f9741b1d2b5 100644 --- a/drivers/hwmon/lm70.c +++ b/drivers/hwmon/lm70.c @@ -65,10 +65,9 @@ static ssize_t lm70_sense_temp(struct device *dev, "spi_write_then_read failed with status %d\n", status); goto out; } - dev_dbg(dev, "rxbuf[1] : 0x%x rxbuf[0] : 0x%x\n", rxbuf[1], rxbuf[0]); - - raw = (rxbuf[1] << 8) + rxbuf[0]; - dev_dbg(dev, "raw=0x%x\n", raw); + raw = (rxbuf[0] << 8) + rxbuf[1]; + dev_dbg(dev, "rxbuf[0] : 0x%02x rxbuf[1] : 0x%02x raw=0x%04x\n", + rxbuf[0], rxbuf[1], raw); /* * The "raw" temperature read into rxbuf[] is a 16-bit signed 2's @@ -109,6 +108,8 @@ static int __devinit lm70_probe(struct spi_device *spi) if ((spi->mode & (SPI_CPOL|SPI_CPHA)) || !(spi->mode & SPI_3WIRE)) return -EINVAL; + /* NOTE: we assume 8-bit words, and convert to 16 bits manually */ + p_lm70 = kzalloc(sizeof *p_lm70, GFP_KERNEL); if (!p_lm70) return -ENOMEM; |