Commit 2dcf82a8 authored by Stanley.Yang's avatar Stanley.Yang Committed by Alex Deucher
Browse files

drm/amdgpu: Fix shared buff copy to user 



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: default avatarStanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 280df499

drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c

+1 −1
Original line number Diff line number Diff line
@@ -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;



err_free_shared_buf: