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| author | Srinivas Pandruvada <[email protected]> | 2021-11-04 05:19:25 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2021-11-04 18:48:47 +0000 |
| commit | 5521055670a53bd495676d1163b40ecb0a37af9c (patch) | |
| tree | e412263fb918a5f8671bf50f4be3ef2aecc6bb64 /drivers/fpga/altera-fpga2sdram.c | |
| parent | cpufreq: intel_pstate: Clear HWP desired on suspend/shutdown and offline (diff) | |
| download | kernel-5521055670a53bd495676d1163b40ecb0a37af9c.tar.gz kernel-5521055670a53bd495676d1163b40ecb0a37af9c.zip | |
cpufreq: intel_pstate: Fix unchecked MSR 0x773 access
It is possible that on some platforms HWP interrupts are disabled. In
that case accessing MSR 0x773 will result in warning.
So check X86_FEATURE_HWP_NOTIFY feature to access MSR 0x773. The other
places in code where this MSR is accessed, already checks this feature
except during disable path called during cpufreq offline and suspend
callbacks.
Fixes: 57577c996d73 ("cpufreq: intel_pstate: Process HWP Guaranteed change notification")
Reported-by: Steven Rostedt <[email protected]>
Signed-off-by: Srinivas Pandruvada <[email protected]>
Tested-by: Steven Rostedt (VMware) <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/fpga/altera-fpga2sdram.c')
0 files changed, 0 insertions, 0 deletions