• Jean Delvare's avatar
    [PATCH} hwmon: (jc42) Properly detect TSE2004-compliant devices again · eabb0381
    Jean Delvare authored
    Commit b3e992f6 ("hwmon: (jc42)  Strengthen detect function")
    attempted to make the detect function more robust for
    TSE2004-compliant devices by checking capability bits which, according
    to the JEDEC 21-C specification, should always be set. Unfortunately,
    not all real-world implementations fully adhere to this specification,
    so this change caused a regression.
    
    Stop testing bit 7 (EVSD) of the Capabilities register, as it was
    found to be 0 on one real-world device.
    
    Also stop testing bits 0 (EVENT) and 2 (RANGE) as vendor datasheets
    (Renesas TSE2004GB2B0, ST STTS2004) suggest that they may not always
    be set either.
    Signed-off-by: default avatarJean Delvare <jdelvare@suse.de>
    Message-ID: <20241014141204.026f4641@endymion.delvare>
    Fixes: b3e992f6 ("hwmon: (jc42)  Strengthen detect function")
    Message-ID: <20241014220426.0c8f4d9c@endymion.delvare>
    Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
    eabb0381
jc42.c 15.8 KB