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| author | Yazen Ghannam <[email protected]> | 2025-07-21 18:11:54 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-08-18 14:36:59 +0000 |
| commit | e9576e078220c50ace9e9087355423de23e25fa5 (patch) | |
| tree | 31bf284d802af91d913daad4acb3b512517c5b33 /drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | |
| parent | x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper (diff) | |
| download | kernel-e9576e078220c50ace9e9087355423de23e25fa5.tar.gz kernel-e9576e078220c50ace9e9087355423de23e25fa5.zip | |
x86/CPU/AMD: Ignore invalid reset reason value
The reset reason value may be "all bits set", e.g. 0xFFFFFFFF. This is a
commonly used error response from hardware. This may occur due to a real
hardware issue or when running in a VM.
The user will see all reset reasons reported in this case.
Check for an error response value and return early to avoid decoding
invalid data.
Also, adjust the data variable type to match the hardware register size.
Fixes: ab8131028710 ("x86/CPU/AMD: Print the reason for the last reset")
Reported-by: Libing He <[email protected]>
Signed-off-by: Yazen Ghannam <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c')
0 files changed, 0 insertions, 0 deletions