From dbd712c2272764a536e29ad6841dba74989a39d9 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 21 Feb 2013 09:33:25 -0800 Subject: hwmon: (pmbus/ltc2978) Fix peak attribute handling Peak attributes were not initialized and cleared correctly. Also, temp2_max is only supported on page 0 and thus does not need to be an array. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.2+ Acked-by: Jean Delvare --- drivers/hwmon/pmbus/ltc2978.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 9652a2c92a24..cc29a7e57bd7 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -62,7 +62,7 @@ struct ltc2978_data { int temp_min, temp_max; int vout_min[8], vout_max[8]; int iout_max[2]; - int temp2_max[2]; + int temp2_max; struct pmbus_driver_info info; }; @@ -204,10 +204,9 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg) ret = pmbus_read_word_data(client, page, LTC3880_MFR_TEMPERATURE2_PEAK); if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->temp2_max[page])) - data->temp2_max[page] = ret; - ret = data->temp2_max[page]; + if (lin11_to_val(ret) > lin11_to_val(data->temp2_max)) + data->temp2_max = ret; + ret = data->temp2_max; } break; case PMBUS_VIRT_READ_VIN_MIN: @@ -248,11 +247,11 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, switch (reg) { case PMBUS_VIRT_RESET_IOUT_HISTORY: - data->iout_max[page] = 0x7fff; + data->iout_max[page] = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_TEMP2_HISTORY: - data->temp2_max[page] = 0x7fff; + data->temp2_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: @@ -262,12 +261,12 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, break; case PMBUS_VIRT_RESET_VIN_HISTORY: data->vin_min = 0x7bff; - data->vin_max = 0; + data->vin_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_TEMP_HISTORY: data->temp_min = 0x7bff; - data->temp_max = 0x7fff; + data->temp_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; default: @@ -321,10 +320,11 @@ static int ltc2978_probe(struct i2c_client *client, info = &data->info; info->write_word_data = ltc2978_write_word_data; - data->vout_min[0] = 0xffff; data->vin_min = 0x7bff; + data->vin_max = 0x7c00; data->temp_min = 0x7bff; - data->temp_max = 0x7fff; + data->temp_max = 0x7c00; + data->temp2_max = 0x7c00; switch (id->driver_data) { case ltc2978: @@ -336,7 +336,6 @@ static int ltc2978_probe(struct i2c_client *client, for (i = 1; i < 8; i++) { info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; - data->vout_min[i] = 0xffff; } break; case ltc3880: @@ -352,11 +351,14 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; - data->vout_min[1] = 0xffff; + data->iout_max[0] = 0x7c00; + data->iout_max[1] = 0x7c00; break; default: return -ENODEV; } + for (i = 0; i < info->pages; i++) + data->vout_min[i] = 0xffff; return pmbus_do_probe(client, id, info); } -- cgit v1.2.3 From f366fccd0809f13ba20d64cae3c83f7338c88af7 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 21 Feb 2013 10:49:40 -0800 Subject: hwmon: (pmbus/ltc2978) Use detected chip ID to select supported functionality We read the chip ID from the chip, use it to determine if the chip ID provided to the driver is correct, and report it if wrong. We should also use the correct chip ID to select supported functionality. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.2+ Acked-by: Jean Delvare --- drivers/hwmon/pmbus/ltc2978.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index cc29a7e57bd7..a58de38e23d8 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -326,7 +326,7 @@ static int ltc2978_probe(struct i2c_client *client, data->temp_max = 0x7c00; data->temp2_max = 0x7c00; - switch (id->driver_data) { + switch (data->id) { case ltc2978: info->read_word_data = ltc2978_read_word_data; info->pages = 8; -- cgit v1.2.3 From 3e78080f81481aa8340374d5a37ae033c1cf4272 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 2 Mar 2013 15:33:30 +0800 Subject: hwmon: (sht15) Check return value of regulator_enable() Not having power is a pretty serious error so check that we are able to enable the supply and error out if we can't. Signed-off-by: Mark Brown Cc: stable@vger.kernel.org #3.8+; 3.0+ will need manual backport Signed-off-by: Guenter Roeck --- drivers/hwmon/sht15.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c index bfe326e896df..2507f902fb7a 100644 --- a/drivers/hwmon/sht15.c +++ b/drivers/hwmon/sht15.c @@ -965,7 +965,13 @@ static int sht15_probe(struct platform_device *pdev) if (voltage) data->supply_uv = voltage; - regulator_enable(data->reg); + ret = regulator_enable(data->reg); + if (ret != 0) { + dev_err(&pdev->dev, + "failed to enable regulator: %d\n", ret); + return ret; + } + /* * Setup a notifier block to update this if another device * causes the voltage to change -- cgit v1.2.3