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| author | Finn Thain <fthain@telegraphics.com.au> | 2020-09-05 02:02:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 11:57:49 +0300 |
| commit | 72407b8d08b359253835d3d3d0604dfcb65bb53f (patch) | |
| tree | d448972df27a7e22aa02d30fb8fc99d4d82e2079 /arch/powerpc/platforms | |
| parent | 68a8ec0b022f2247e46b95f2c5f8eacee8872acf (diff) | |
| download | linux-72407b8d08b359253835d3d3d0604dfcb65bb53f.tar.xz | |
powerpc/tau: Check processor type before enabling TAU interrupt
[ Upstream commit 5e3119e15fed5b9a9a7e528665ff098a4a8dbdbc ]
According to Freescale's documentation, MPC74XX processors have an
erratum that prevents the TAU interrupt from working, so don't try to
use it when running on those processors.
Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c281611544768e758bd58fe812cf702a5bd2d042.1599260540.git.fthain@telegraphics.com.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index d82e3664ffdf..92d7f2a7936e 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -219,9 +219,8 @@ config TAU temperature within 2-4 degrees Celsius. This option shows the current on-die temperature in /proc/cpuinfo if the cpu supports it. - Unfortunately, on some chip revisions, this sensor is very inaccurate - and in many cases, does not work at all, so don't assume the cpu - temp is actually what /proc/cpuinfo says it is. + Unfortunately, this sensor is very inaccurate when uncalibrated, so + don't assume the cpu temp is actually what /proc/cpuinfo says it is. config TAU_INT bool "Interrupt driven TAU driver (DANGEROUS)" |