The failed case is no SDMA1 IP for Renoir discovery table while in accessing SDMA1 reg base, thus need have nullptr test for soc15_read_register invoked in MMR addres space inqure opt.
Signed-off-by: Prike.Liang <prike.li...@amd.com> --- drivers/gpu/drm/amd/amdgpu/soc15.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 623745b..3e406ee 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -415,7 +415,8 @@ static int soc15_read_register(struct amdgpu_device *adev, u32 se_num, *value = 0; for (i = 0; i < ARRAY_SIZE(soc15_allowed_read_registers); i++) { en = &soc15_allowed_read_registers[i]; - if (reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] + if (adev->reg_offset[en->hwip][en->inst] && + reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] + en->reg_offset)) continue; -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx