Yunxiang Li 6e4aa08fa9
drm/amdgpu: Fix amdgpu_device_reset_sriov retry logic ...
The retry loop for SRIOV reset have refcount and memory leak issue.
Depending on which function call fails it can potentially call
amdgpu_amdkfd_pre/post_reset different number of times and causes
kfd_locked count to be wrong. This will block all future attempts at
opening /dev/kfd. The retry loop also leakes resources by calling
amdgpu_virt_init_data_exchange multiple times without calling the
corresponding fini function.
Align with the bare-metal reset path which doesn't have these issues.
This means taking the amdgpu_amdkfd_pre/post_reset functions out of the
reset loop and calling amdgpu_device_pre_asic_reset each retry which
properly free the resources from previous try by calling
amdgpu_virt_fini_data_exchange.
Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com >
Reviewed-by: Emily Deng <Emily.Deng@amd.com >
Reviewed-by: Zhigang Luo <zhigang.luo@amd.com >
Signed-off-by: Alex Deucher <alexander.deucher@amd.com >
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