On Thu, Jan 25, 2018 at 11:37:59AM +0100, Philippe Cornu wrote:
> The dcs/generic dsi read feature is not yet implemented so it
> is important to warn the host_transfer() caller in case of
> read operation requests.
>
> Signed-off-by: Philippe Cornu <philippe.cornu@xxxxxx>
Awesome, thanks.
Reviewed-by: Brian Norris <briannorris@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index daec7881be6d..72ecaeb40822 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -405,6 +405,12 @@ static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,
> struct mipi_dsi_packet packet;
> int ret;
>
> + if (msg->rx_buf || msg->rx_len) {
> + /* TODO dw drv improvements: implement read feature */
> + dev_warn(dsi->dev, "read operations not yet implemented\n");
> + return -EINVAL;
> + }
> +
> ret = mipi_dsi_create_packet(&packet, msg);
> if (ret) {
> dev_err(dsi->dev, "failed to create packet: %d\n", ret);
> --
> 2.15.1
>
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