[PATCH v1 0/2] amd-pstate-ut: Fix issues observed after loading amd-pstate-ut driver

[Swapnil Sapkal]

This series fixes amd-pstate-ut which is currently failing for two
reasons:

1) The code for amd-pstate-ut was written when CONFIG_X86_AMD_PSTATE
was tristate config and amd_pstate can be built as module. In
current implementation the driver is built-in and previous module
parameters are removed. But amd-pstate-ut still try to read old module
parameters. Therefore, test fails. First patch fixes this issue by
removing those module parameter references.

2) In amd_pstate_ut_check_perf() and amd_pstate_ut_check_freq()
functions, cpufreq_cpu_get() is called to get policy of the
cpu and mark it as busy. In these functions cpufreq_cpu_put()
should be used to release the policy. As cpufreq_cpu_put()
is not used to release the policy, any other entity trying to
access the policy is blocked indefinitely. One such scenario
occurs when mode of amd-pstate is changed. Second patch fixes this
by calling cpufreq_cpu_put() wherever necessary.

Swapnil Sapkal (2):
  amd-pstate-ut: Remove module parameter access from amd-pstate-ut
  amd-pstate-ut: Fix kernel panic due to loading amd-pstate-ut driver

 drivers/cpufreq/amd-pstate-ut.c | 46 +++++++++++++--------------------
 1 file changed, 18 insertions(+), 28 deletions(-)

-- 
2.34.1