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hwmon fixes for v7.0-rc5

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- max6639: Fix pulses-per-revolution implementation
 
 - Several PMBus drivers: Add missing error checks
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Merge tag 'hwmon-for-v7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - max6639: Fix pulses-per-revolution implementation

 - Several PMBus drivers: Add missing error checks

* tag 'hwmon-for-v7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (max6639) Fix pulses-per-revolution implementation
  hwmon: (pmbus/isl68137) Fix unchecked return value and use sysfs_emit()
  hwmon: (pmbus/ina233) Add error check for pmbus_read_word_data() return value
  hwmon: (pmbus/mp2869) Check pmbus_read_byte_data() before using its return value
  hwmon: (pmbus/mp2975) Add error check for pmbus_read_word_data() return value
  hwmon: (pmbus/hac300s) Add error check for pmbus_read_word_data() return value
This commit is contained in:
Linus Torvalds 2026-03-21 09:09:51 -07:00
commit 113ae7b4de
6 changed files with 37 additions and 21 deletions
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10
drivers/hwmon/max6639.c
View File

@ -232,7 +232,7 @@ static int max6639_read_fan(struct device *dev, u32 attr, int channel,
static int max6639_set_ppr(struct max6639_data *data, int channel, u8 ppr)
{
/* Decrement the PPR value and shift left by 6 to match the register format */
return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr-- << 6);
return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), --ppr << 6);
}
static int max6639_write_fan(struct device *dev, u32 attr, int channel,
@ -524,8 +524,8 @@ static int max6639_probe_child_from_dt(struct i2c_client *client,
{
struct device *dev = &client->dev;
u32 i;
int err, val;
u32 i, val;
int err;
err = of_property_read_u32(child, "reg", &i);
if (err) {
@ -540,8 +540,8 @@ static int max6639_probe_child_from_dt(struct i2c_client *client,
err = of_property_read_u32(child, "pulses-per-revolution", &val);
if (!err) {
if (val < 1 || val > 5) {
dev_err(dev, "invalid pulses-per-revolution %d of %pOFn\n", val, child);
if (val < 1 || val > 4) {
dev_err(dev, "invalid pulses-per-revolution %u of %pOFn\n", val, child);
return -EINVAL;
}
data->ppr[i] = val;

2
drivers/hwmon/pmbus/hac300s.c
View File

@ -58,6 +58,8 @@ static int hac300s_read_word_data(struct i2c_client *client, int page,
case PMBUS_MFR_VOUT_MIN:
case PMBUS_READ_VOUT:
rv = pmbus_read_word_data(client, page, phase, reg);
if (rv < 0)
return rv;
return FIELD_GET(LINEAR11_MANTISSA_MASK, rv);
default:
return -ENODATA;

2
drivers/hwmon/pmbus/ina233.c
View File

@ -67,6 +67,8 @@ static int ina233_read_word_data(struct i2c_client *client, int page,
switch (reg) {
case PMBUS_VIRT_READ_VMON:
ret = pmbus_read_word_data(client, 0, 0xff, MFR_READ_VSHUNT);
if (ret < 0)
return ret;
/* Adjust returned value to match VIN coefficients */
/* VIN: 1.25 mV VSHUNT: 2.5 uV LSB */

7
drivers/hwmon/pmbus/isl68137.c
View File

@ -98,8 +98,11 @@ static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
{
int val = pmbus_read_byte_data(client, page, PMBUS_OPERATION);
return sprintf(buf, "%d\n",
(val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS ? 1 : 0);
if (val < 0)
return val;
return sysfs_emit(buf, "%d\n",
(val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS);
}
static ssize_t isl68137_avs_enable_store_page(struct i2c_client *client,

35
drivers/hwmon/pmbus/mp2869.c
View File

@ -165,7 +165,7 @@ static int mp2869_read_byte_data(struct i2c_client *client, int page, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct mp2869_data *data = to_mp2869_data(info);
int ret;
int ret, mfr;
switch (reg) {
case PMBUS_VOUT_MODE:
@ -188,11 +188,14 @@ static int mp2869_read_byte_data(struct i2c_client *client, int page, int reg)
if (ret < 0)
return ret;
mfr = pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC);
if (mfr < 0)
return mfr;
ret = (ret & ~GENMASK(2, 2)) |
FIELD_PREP(GENMASK(2, 2),
FIELD_GET(GENMASK(1, 1),
pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC)));
FIELD_GET(GENMASK(1, 1), mfr));
break;
case PMBUS_STATUS_TEMPERATURE:
/*
@ -207,15 +210,16 @@ static int mp2869_read_byte_data(struct i2c_client *client, int page, int reg)
if (ret < 0)
return ret;
mfr = pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC);
if (mfr < 0)
return mfr;
ret = (ret & ~GENMASK(7, 6)) |
FIELD_PREP(GENMASK(6, 6),
FIELD_GET(GENMASK(1, 1),
pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC))) |
FIELD_GET(GENMASK(1, 1), mfr)) |
FIELD_PREP(GENMASK(7, 7),
FIELD_GET(GENMASK(1, 1),
pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC)));
FIELD_GET(GENMASK(1, 1), mfr));
break;
default:
ret = -ENODATA;
@ -230,7 +234,7 @@ static int mp2869_read_word_data(struct i2c_client *client, int page, int phase,
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct mp2869_data *data = to_mp2869_data(info);
int ret;
int ret, mfr;
switch (reg) {
case PMBUS_STATUS_WORD:
@ -246,11 +250,14 @@ static int mp2869_read_word_data(struct i2c_client *client, int page, int phase,
if (ret < 0)
return ret;
mfr = pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC);
if (mfr < 0)
return mfr;
ret = (ret & ~GENMASK(2, 2)) |
FIELD_PREP(GENMASK(2, 2),
FIELD_GET(GENMASK(1, 1),
pmbus_read_byte_data(client, page,
PMBUS_STATUS_MFR_SPECIFIC)));
FIELD_GET(GENMASK(1, 1), mfr));
break;
case PMBUS_READ_VIN:
/*

2
drivers/hwmon/pmbus/mp2975.c
View File

@ -313,6 +313,8 @@ static int mp2973_read_word_data(struct i2c_client *client, int page,
case PMBUS_STATUS_WORD:
/* MP2973 & MP2971 return PGOOD instead of PB_STATUS_POWER_GOOD_N. */
ret = pmbus_read_word_data(client, page, phase, reg);
if (ret < 0)
return ret;
ret ^= PB_STATUS_POWER_GOOD_N;
break;
case PMBUS_OT_FAULT_LIMIT: