On Thu, Sep 08, 2022 at 05:16:02PM -0700, Daniele Ceraolo Spurio wrote:
> +static ssize_t mei_pxp_gsc_command(struct device *dev, u8 client_id, u32 fence_id,
> + struct scatterlist *sg_in, size_t total_in_len,
> + struct scatterlist *sg_out)
> +{
> + struct mei_cl_device *cldev;
> +
> + if (!dev || !sg_in || !sg_out)
> + return -EINVAL;
How can these ever be NULL? Doesn't the core control this, so why would
that happen?
Don't check for things that can never happen.
> +
> + cldev = to_mei_cl_device(dev);
> +
> + return mei_cldev_send_gsc_command(cldev, client_id, fence_id, sg_in, total_in_len, sg_out);
> +}
> +
> static const struct i915_pxp_component_ops mei_pxp_ops = {
> .owner = THIS_MODULE,
> .send = mei_pxp_send_message,
> .recv = mei_pxp_receive_message,
> + .gsc_command = mei_pxp_gsc_command,
> };
>
> static int mei_component_master_bind(struct device *dev)
> diff --git a/include/drm/i915_pxp_tee_interface.h b/include/drm/i915_pxp_tee_interface.h
> index af593ec64469..a702b6ec17f7 100644
> --- a/include/drm/i915_pxp_tee_interface.h
> +++ b/include/drm/i915_pxp_tee_interface.h
> @@ -8,6 +8,7 @@
>
> #include <linux/mutex.h>
> #include <linux/device.h>
> +struct scatterlist;
>
> /**
> * struct i915_pxp_component_ops - ops for PXP services.
> @@ -23,6 +24,10 @@ struct i915_pxp_component_ops {
>
> int (*send)(struct device *dev, const void *message, size_t size);
> int (*recv)(struct device *dev, void *buffer, size_t size);
> + ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id,
> + struct scatterlist *sg_in, size_t total_in_len,
> + struct scatterlist *sg_out);
No documentation for this new callback?
The build should give you are warning :(
