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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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drm/amdgpu: use DISCOVERY_TMR_SIZE in ACPI TMR fallback

amdgpu_acpi_get_tmr_info() returns the full TMR region size, not the IP
discovery table size. Using tmr_size as discovery.size can lead to oversized
allocations and probe failure.

In the ACPI fallback path, keep discovery.size as DISCOVERY_TMR_SIZE and only
use ACPI data for offset calculation.

Fixes: 01bdc7e219c4 ("drm/amdgpu: New interface to get IP discovery binary v3")
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

authored by

Jesse.Zhang and committed by
Alex Deucher 5c82adf9 bdb2b9e1

+1 -1
+1 -1
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
··· 324 324 ret = amdgpu_acpi_get_tmr_info(adev, &tmr_offset, &tmr_size); 325 325 if (ret) 326 326 return ret; 327 - adev->discovery.size = (u32)tmr_size; 327 + adev->discovery.size = DISCOVERY_TMR_SIZE; 328 328 adev->discovery.offset = tmr_offset + tmr_size - DISCOVERY_TMR_OFFSET; 329 329 } 330 330 }