diff options
| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-07-30 08:05:25 +0200 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-08-11 19:14:12 +0200 |
| commit | 3a2805e845761ea76a6ad5688d637b2624de0cab (patch) | |
| tree | cef5521d2223fe2ab9a686699c52a4c2c6d045f2 /drivers/hwmon | |
| parent | hwmon: (pmbus) Virtualize pmbus_write_byte (diff) | |
| download | linux-3a2805e845761ea76a6ad5688d637b2624de0cab.tar.xz linux-3a2805e845761ea76a6ad5688d637b2624de0cab.zip | |
hwmon: (pmbus/lm25066) Ignore byte writes to non-zero pages
pmbus_clear_faults() attempts to clear faults on non-existing real pages.
As a result, the command error bit in the status register is set, and faults
are not really cleared.
All byte writes to non-zero pages are requests to clear the status register
on that page. Since non-zero pages are virtual and do not exist on the chip,
there is nothing to do, and such requests have to be ignored. This fixes
above problem.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/pmbus/lm25066.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c index d4bc114572de..ac254fba551b 100644 --- a/drivers/hwmon/pmbus/lm25066.c +++ b/drivers/hwmon/pmbus/lm25066.c @@ -161,6 +161,17 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg, return ret; } +static int lm25066_write_byte(struct i2c_client *client, int page, u8 value) +{ + if (page > 1) + return -EINVAL; + + if (page == 0) + return pmbus_write_byte(client, 0, value); + + return 0; +} + static int lm25066_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -204,6 +215,7 @@ static int lm25066_probe(struct i2c_client *client, info->read_word_data = lm25066_read_word_data; info->write_word_data = lm25066_write_word_data; + info->write_byte = lm25066_write_byte; switch (id->driver_data) { case lm25066: |