提交 4cda6e8e 编写于 作者: P Philippe Cornu 提交者: Archit Taneja

drm/bridge/synopsys: dsi: Add a warning msg on dsi read requests

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.
Reviewed-by: NBrian Norris <briannorris@chromium.org>
Signed-off-by: NPhilippe Cornu <philippe.cornu@st.com>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180125103800.1999-2-philippe.cornu@st.com
上级 21f815bf
......@@ -398,6 +398,12 @@ 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);
......
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