[hwmon PATCH v2 0/8] hwmon: (adt7470): Multiple fixes

This series fixes several issues in the adt7470 driver:

- Restore PWM configuration after I2C failures.
- Avoid cache corruption after failed writes.
- Prevent busy looping when auto_update_interval is zero.
- Fix incorrect temperature alarm reporting.
- Cache the PWM frequency and fix error propagation.
- Correct unused PWM auto-mode mask definitions.
- Fix TOCTOU issue when reading fan data.
- Fix PWM auto temp state array corruption and missing bounds check in
  sysfs read.

Signed-off-by: Luiz Angelo Daros de Luca <[email protected]>
---
Changes in v2:
- Added new patch to fix TOCTOU divide-by-zero crash in fan speed read.
- "Fix temperature alarm logic...": Added TEMP_ALARM_BIT and
  FAN_ALARM_BIT macros for clarity.
- "Use cached PWM frequency value": Fixed incorrect array indexing by
  caching the closest frequency early.
- Added patch to fix PWM auto temp state array corruption and missing bounds check.
- Link to v1: https://patch.msgid.link/[email protected]

To: Guenter Roeck <[email protected]>
To: Chris Packham <[email protected]>
To: Andrew Morton <[email protected]>
To: "Darrick J. Wong" <[email protected]>
To: "Mark M. Hoffman" <[email protected]>
Cc: [email protected]
Cc: [email protected]

---
Luiz Angelo Daros de Luca (8):
      hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors
      hwmon: (adt7470) Fix cache updated before hardware write on I2C error
      hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread
      hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks
      hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read()
      hwmon: (adt7470) Use cached PWM frequency value
      hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
      hwmon: (adt7470) Fix PWM auto temp state array and bounds check

 drivers/hwmon/adt7470.c | 129 ++++++++++++++++++++++++++++++++++--------------
 1 file changed, 92 insertions(+), 37 deletions(-)
---
base-commit: 7e12ea5aae19ee07d466e9613ccba753349c9c1d
change-id: 20260716-adt7470_fixes-59a102278d72

Best regards,
--  
Luiz Angelo Daros de Luca <[email protected]>