]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
Revert "hwmon: (coretemp) Refine TjMax detection"
authorGuenter Roeck <linux@roeck-us.net>
Wed, 30 Apr 2014 21:08:14 +0000 (14:08 -0700)
committerGuenter Roeck <linux@roeck-us.net>
Thu, 1 May 2014 11:07:52 +0000 (04:07 -0700)
commitc0940e95f7a78be0525c8d31df0b1f71e149e57e
tree777190e02b9990579f00b1d1281d85f98900cccc
parentd1db0eea852497762cab43b905b879dfcd3b8987
Revert "hwmon: (coretemp) Refine TjMax detection"

This reverts commit 9fb6c9c73b11bef65ba80a362547fd116c1e1c9d.

Tjmax on some Intel CPUs is below 85 degrees C. One known example is
L5630 with Tjmax of 71 degrees C. There are other Xeon processors with
Tjmax of 70 or 80 degrees C. Also, the Intel IA32 System Programming
document states that the temperature target is in bits 23:16 of MSR 0x1a2
(MSR_TEMPERATURE_TARGET), which is 8 bits, not 7.

So even if turbostat uses similar checks to validate Tjmax, there is no
evidence that the checks are actually required. On the contrary, the
checks are known to cause problems and therefore need to be removed.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=75071.

Fixes: 9fb6c9c hwmon: (coretemp) Refine TjMax detection
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/coretemp.c