Commit 1a1c130c authored Jan 25, 2018 by Philippe Cornu Committed by Archit Taneja Jan 30, 2018

drm/bridge/synopsys: dsi: Fix dsi_host_transfer() return value



The dw_mipi_dsi_host_transfer() must return the number of
bytes transmitted/received on success instead of 0.
Note: As the read feature is not implemented, only the
transmitted number of bytes is returned for the moment.

Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180125103800.1999-3-philippe.cornu@st.com

parent 4cda6e8e

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -412,7 +412,16 @@ static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,

		dw_mipi_message_config(dsi, msg);

		return dw_mipi_dsi_write(dsi, &packet);
		ret = dw_mipi_dsi_write(dsi, &packet);
		if (ret)
		return ret;

		/*
		* TODO Only transmitted size is returned as actual driver does
		* not support dcs/generic reads. Please update return value when
		* delivering the read feature.
		*/
		return packet.size;
		}

		static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = {