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drm/amdgpu: Fix shared buff copy to user

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[ Upstream commit 2dcf82a8e8 ]

ta if invoke node buffer
|-------- ta type ----------|
|--------  ta id  ----------|
|-------- cmd  id ----------|
|------ shared buf len -----|
|------ shared buffer ------|

ta if invoke node buffer is as above, copy shared buffer data to correct location

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stanley.Yang
2024-02-05 15:55:48 +08:00
committed by Greg Kroah-Hartman
parent c832e8c826
commit bc3639e287
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
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@@ -362,7 +362,7 @@ static ssize_t ta_if_invoke_debugfs_write(struct file *fp, const char *buf, size
} }
} }
if (copy_to_user((char *)buf, context->mem_context.shared_buf, shared_buf_len)) if (copy_to_user((char *)&buf[copy_pos], context->mem_context.shared_buf, shared_buf_len))
ret = -EFAULT; ret = -EFAULT;
err_free_shared_buf: err_free_shared_buf: