From 3a2805e845761ea76a6ad5688d637b2624de0cab Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 29 Jul 2011 23:05:25 -0700 Subject: [PATCH] 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 Reviewed-by: Robert Coulson --- drivers/hwmon/pmbus/lm25066.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c index d4bc114..ac254fb 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: -- 2.7.4