• Guenter Roeck's avatar
    hwmon: (k10temp) Use API function to access System Management Network · 3b031622
    Guenter Roeck authored
    The SMN (System Management Network) on Family 17h AMD CPUs is also accessed
    from other drivers, specifically EDAC. Accessing it directly is racy.
    On top of that, accessing the SMN through root bridge 00:00 is wrong on
    multi-die CPUs and may result in reading the temperature from the wrong
    die. Use available API functions to fix the problem.
    
    For this to work, add dependency on AMD_NB. Also change the Raven Ridge
    PCI device ID to point to Data Fabric Function 3, since this ID is used
    by the API functions to find the CPU node.
    
    Cc: stable@vger.kernel.org # v4.16+
    Tested-by: default avatarGabriel Craciunescu <nix.or.die@gmail.com>
    Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
    3b031622
k10temp.c 9.49 KB